feat(website): randomise which logo comes first on /logo/ per visit

Hugo sorts map keys, so `range (dict "m" … "r" …)` always put M first
and gave it the "first thing on the page" vote. The template now ranges
over an ordered list (front-matter `order:` can pin it), and a tiny
inline script on poll pages coin-flips the visual order before first
paint, applied via CSS `order` on every M/R pair and remembered in
sessionStorage so a reload or a vote doesn't shuffle the page.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y8kPxizsExc95ZhvfJmaCw

.forgejo/workflows/build-iso.yml

@@ -12,6 +12,7 @@ on:
       - '**/*.md'
       - 'docs/**'
       - 'website/**'
+      - 'ops/**'
       - 'CHANGELOG.md'
       - 'RELEASING.md'
   workflow_dispatch:

CHANGELOG.md

@@ -7,6 +7,175 @@ This project uses calendar versioning: `YY.N-stage` (e.g. `26.0-alpha` = 2026, r
 
 ## [Unreleased]
 
+### Fixed
+
+- **Self-update starts newly added timers immediately and links units
+  through `current`.** `_link_new_units()` enabled a timer a release
+  introduced but never started it, so after the 26.19 → 26.20 update the
+  bench sat with `furtka-welcome.timer` `inactive (dead)` — and the console
+  banner without its IP line — until the next reboot. It also linked the
+  unit from `/opt/furtka/versions/<ver>/…` instead of `/opt/furtka/current/…`,
+  so the link would have stopped following later updates and rollbacks
+  (installer-created links use `current`). Now: link via `current`, enable,
+  start.
+
+## [26.20-alpha] - 2026-08-25
+
+First release shaped by a real-hardware install (old laptop mainboard, BIOS boot,
+SSD with a previous Proxmox VE on it). All four fixes are things an empty
+Proxmox VM never shows.
+
+### Fixed
+
+- **First catalog sync no longer dies silently at boot.** On dual-stack
+  LANs `network-online.target` is satisfied by the IPv6 SLAAC address a
+  second before DHCPv4 lands, so `furtka-catalog-sync.service` ran into
+  `Network is unreachable`, exited, and the next attempt was the daily timer
+  — up to 6 h of jitter later. Meanwhile `catalog-state.json` stayed on
+  `checking` and the apps page showed "checking…" with nothing running
+  (first hardware bench, 2026-08-25). The service now retries on failure
+  (every 20 s, up to 8 times in 15 min), a failed sync is recorded as stage
+  `error` with the message, and the apps page shows "last sync failed: …"
+  instead of a fake in-progress state.
+- **Installer frees the target disk before partitioning.** The live ISO
+  auto-activates whatever an attached drive carries (LVM volume groups, md
+  arrays, swap) — the first hardware bench's SSD still had a Proxmox VE
+  `pve` VG on it — and archinstall then failed at 12 % with `unable to
+  inform the kernel of the change, probably because it/they are in use`.
+  `install_run` now runs `diskprep.release_disk()` first: swapoff/umount
+  leaves-first, `dmsetup remove` / `mdadm --stop` for every dm/md node
+  stacked on the disk, `wipefs -a` on partitions + disk, then
+  `blockdev --rereadpt`. Every step is written to the top of the install
+  log. The progress page also names this failure explicitly instead of a
+  bare "hit a snag" if it does still happen.
+- **Console banner always shows the IP fallback.** On both the live ISO and
+  the installed system the `/etc/issue` welcome was written once, after
+  `network-online.target`, and simply omitted the `http://<ip>` line when no
+  address existed yet — so on a slow-DHCP NIC (first hardware bench,
+  2026-08-24) the screen only ever offered `proksi.local`. The banner script
+  now runs from a timer (`furtka-issue.timer` on the ISO,
+  `furtka-welcome.timer` on the installed box, every 5 s) and always prints
+  a fallback line: every global IPv4 address once there is one, or a
+  "no IP address yet — check the cable / DHCP" hint until then. It only
+  rewrites `/etc/issue` and nudges agetty when the text changed, so the
+  login prompt doesn't flicker. The live ISO no longer auto-logs `root` in
+  on tty1 (releng default) — that handed the console to a shell before the
+  banner could update; tty1 now stays at the login prompt with a live
+  banner, and the banner tells you a shell is `root` + Enter away. Boxes
+  that self-update get the new timer linked + enabled automatically; the
+  refresh loop takes effect after their next reboot.
+
+## [26.19-alpha] - 2026-08-23
+
+### Fixed
+
+- **App installs now copy subdirectories, so dependency hooks actually
+  ship.** `install_from()` only copied an app's top-level files, so the
+  `scripts/` folder — where a provider's `on_install`/`on_start` dependency
+  hooks live — never reached `/var/lib/furtka/apps/<app>/`, and every hooked
+  dependency failed at reconcile with `hook ... missing in provider`. The
+  whole app folder is copied now (`rmtree` + `copytree`, so a reinstall also
+  drops files that were removed upstream). Found during the first real
+  end-to-end run of the mosquitto + zigbee2mqtt pair on a test VM.
+- **`furtka app install <name>` now runs `on_install` hooks.** Named CLI
+  installs copied the app folders and then ran a bare reconcile, which fires
+  `on_start` but never `on_install` — so a CLI install of a consumer brought
+  its provider up without ever provisioning it (no account created, empty
+  `MQTT_*` values in the consumer's `.env`). Named installs now go through
+  `install_runner.run_install` (writing the plan file first), the same docker
+  phase the API dispatches, so providers come up before consumers and
+  `on_install` hooks run. Path-based installs keep the copy + reconcile
+  dev/test path.
+
+## [26.18-alpha] - 2026-06-04
+
+### Fixed
+
+- **`on_start` dependency hooks now receive the consumer's stored
+  credentials.** Previously the reconciler handed an `on_start` hook only
+  `FURTKA_CONSUMER_APP`/`FURTKA_CONSUMER_VERSION`, so it had no way to learn
+  the consumer's existing secrets — which made the feature's own headline use
+  case (re-create a provider account, e.g. an MQTT user, after a wipe, with
+  the *same* password the consumer already holds) impossible without the
+  provider stashing a copy itself. The hook now also gets the consumer's `.env`
+  values, namespaced under `FURTKA_CONSUMER_ENV_<KEY>` (only UPPER_SNAKE_CASE
+  keys, so a hand-edited `.env` can't produce a malformed `--env` argument).
+  `on_start` stays read-only with respect to the consumer: unlike `on_install`,
+  its stdout is intentionally not merged back into the consumer's `.env` — it
+  reads consumer state to reconcile provider state, it doesn't mutate it.
+  Surfaced by building the first real provider/consumer catalog pair
+  (mosquitto + zigbee2mqtt) in daniel/furtka-apps.
+
+## [26.17-alpha] - 2026-05-11
+
+### Added
+
+- **App-to-app dependencies.** Manifests gain an optional `requires`
+  array; each entry names a provider app plus two optional hook scripts
+  that live in the *provider's* folder. `on_install` runs once via
+  `docker compose exec` against the provider's running container while
+  the consumer is being installed (use case: `mosquitto_passwd` a new
+  MQTT user for the consumer). `on_start` runs every boot during
+  reconcile, before the consumer's container starts (use case: make
+  sure the user still exists after a Mosquitto wipe). Hook stdout
+  parses as `KEY=VALUE` lines and optional `FURTKA_JSON: {…}` sentinel
+  lines, both validated against the existing `SETTING_NAME` regex; the
+  values get merged into the consumer's `.env` (hook wins on conflict)
+  and the placeholder-secret check runs again over the merged file so
+  a hook returning `MQTT_PASS=changeme` is refused the same way an
+  unedited `.env.example` is.
+- **`POST /api/apps/install/plan`.** New read-only endpoint that
+  returns the topo-sorted install order for a target app plus per-app
+  summaries (display_name, version, has_settings, installed flag). The
+  catalog UI calls this before opening the settings dialog so it can
+  show a confirm modal — "Installing zigbee2mqtt also installs
+  Mosquitto" — before anything mutates. Circular dependencies surface
+  as `400 {error: "circular dependency: A -> B -> A"}`; missing
+  providers as `400 {error: "required app 'X' not found …"}`.
+- **`/var/lib/furtka/install-plan.json`** (overridable via
+  `FURTKA_INSTALL_PLAN`). The HTTP install endpoint writes this before
+  it spawns the systemd-run background job so the runner knows the
+  full chain to pull → create volumes → fire hooks → `compose up` for
+  in plan order. The runner consumes the file after reading so a stale
+  plan from a previous install can't accidentally steer the next one.
+
+### Changed
+
+- **`furtka reconcile` now visits apps in dependency order, not
+  alphabetical.** Topo-sort over `requires` puts providers before
+  consumers so a consumer's `on_start` hook can talk to an already-up
+  provider. Within a tier, ties stay alphabetical so boot logs are
+  still deterministic across reboots. Apps with unresolvable `requires`
+  (missing provider) are visited last; the per-app error-isolation in
+  reconcile then catches them without aborting the whole sweep.
+- **`POST /api/apps/install` requires `confirm_dependencies: true`**
+  when installing a named app would pull in transitive providers.
+  Without the flag, the endpoint returns `409` plus the full plan body
+  so the UI can render the confirm dialog without a second round-trip.
+  Lone-target installs (no transitive deps) keep the existing
+  one-click flow — no UX change for `fileshare`-style standalone apps.
+- **`furtka app install <name>` and the web UI now install transitive
+  dependencies automatically.** `furtka app install /path/to/dir`
+  stays as today (single-app, dev/test workflow).
+- **`compose_exec` and `compose_exec_script` helpers** in
+  `furtka/dockerops.py`. Both pass `-T` (no TTY) so they work from the
+  install runner and from reconcile; both raise `DockerError` on
+  non-zero exit or timeout. `compose_exec_script` streams the script
+  body via stdin to `sh -s` so hooks don't need to be baked into the
+  provider's container image.
+
+### Notes
+
+- Hook target service: v1 auto-picks the *first* service in the
+  provider's compose config. Works for Mosquitto, Postgres, Redis.
+  Multi-service providers (Authentik server+worker) will need an
+  optional `service` field on the requirement entry; deferred until a
+  real case lands.
+- Hook timeouts: `on_install` 60 s, `on_start` 30 s. Hardcoded for
+  v1 — revisit if a DB seed legitimately needs longer.
+- Removing an app is now blocked (`409 {dependents: […]}` from the
+  API, exit 2 from the CLI) when other installed apps require it.
+
 ## [26.16-alpha] - 2026-05-10
 
 ### Added
@@ -404,7 +573,11 @@ First tagged snapshot. Pre-alpha — the installer does not yet boot, but the de
 - **Containers:** Docker + Compose
 - **License:** AGPL-3.0
 
-[Unreleased]: https://forgejo.sourcegate.online/daniel/furtka/compare/26.16-alpha...HEAD
+[Unreleased]: https://forgejo.sourcegate.online/daniel/furtka/compare/26.20-alpha...HEAD
+[26.20-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.20-alpha
+[26.19-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.19-alpha
+[26.18-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.18-alpha
+[26.17-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.17-alpha
 [26.16-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.16-alpha
 [26.15-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.15-alpha
 [26.14-alpha]: https://forgejo.sourcegate.online/daniel/furtka/releases/tag/26.14-alpha

README.md

@@ -102,6 +102,7 @@ None of these nail the "your dad can set this up" experience. The installer wiza
 - [x] Installer webapp prototype — device reader + form → JSON (Robert)
 - [x] Arch running on Proxmox, custom image builds in progress (Robert)
 - [x] Competitor analysis — see [docs/competitors.md](docs/competitors.md)
+- [x] First bare-metal install (old laptop board, BIOS, SSD with a previous Proxmox VE) — 4 bugs found and shipped in 26.20-alpha, report in [docs/hardware-test-2026-08.md](docs/hardware-test-2026-08.md)
 - [x] Wizard flow spec — see [docs/wizard-flow.md](docs/wizard-flow.md)
 - [x] Release process + CI — CalVer tags, conventional commits, Forgejo Actions (ruff, pytest, JSON, link checks), `26.0-alpha` tagged
 - [x] Forgejo runner live on Proxmox VM (`forge-runner-01`, Ubuntu 24.04) — docker-outside-of-docker with host-mode jobs for ISO builds, setup captured in [docs/runner-setup.md](docs/runner-setup.md) + [ops/forgejo-runner/](ops/forgejo-runner/)

assets/bin/furtka-welcome

@@ -1,22 +1,36 @@
 #!/bin/bash
 # Regenerates /etc/issue on the installed system so the console tells the
-# user which URL to open. Mirrors the live-ISO furtka-update-issue pattern.
-set -e
+# user which URL to open. Mirrors the live-ISO furtka-update-issue pattern:
+# runs at boot and every few seconds from furtka-welcome.timer, so the IP
+# fallback line is always on screen — with the address once DHCP handed one
+# out, or with a "no IP yet" hint before that / after the cable is pulled.
+# Only rewrites + nudges agetty when the text changed (no prompt flicker).
+set -u
 
-hostname=$(cat /etc/hostname)
-ip=$(ip -4 -o addr show scope global 2>/dev/null | awk '{print $4}' | cut -d/ -f1 | head -1)
+issue=/etc/issue
 
-{
+hostname=$(cat /etc/hostname 2>/dev/null || hostname)
+mapfile -t ips < <(ip -4 -o addr show scope global 2>/dev/null | awk '{print $4}' | cut -d/ -f1)
+
+new=$(
     echo
     echo "  Furtka is ready."
     echo
     echo "  Open in a browser on another device on your network:"
     echo
     echo "      http://${hostname}.local   (easy — try this first)"
-    if [ -n "$ip" ]; then
-        echo "      http://${ip}   (fallback if the first doesn't work)"
+    if ((${#ips[@]})); then
+        for ip in "${ips[@]}"; do
+            echo "      http://${ip}   (fallback if the first doesn't work)"
+        done
+    else
+        echo "      (fallback: no IP address yet — waiting for the network."
+        echo "       Check the cable / DHCP. This line updates by itself.)"
     fi
     echo
-} > /etc/issue
+)
 
-agetty --reload 2>/dev/null || true
+if [ "$new" != "$(cat "$issue" 2>/dev/null)" ]; then
+    printf '%s\n' "$new" > "$issue"
+    agetty --reload 2>/dev/null || true
+fi

assets/systemd/furtka-catalog-sync.service

@@ -2,11 +2,20 @@
 Description=Furtka apps catalog sync
 Requires=network-online.target
 After=network-online.target
+# network-online.target is satisfied by *any* routable address. On dual-stack
+# LANs that is usually the IPv6 SLAAC address, which lands a second or so
+# before DHCPv4 — and the first sync then dies with "Network is unreachable"
+# (first hardware bench, 2026-08-25). Retry a few times instead of waiting
+# for the daily timer.
+StartLimitIntervalSec=15min
+StartLimitBurst=8
 
 [Service]
 Type=oneshot
 ExecStart=/usr/local/bin/furtka catalog sync
 TimeoutStartSec=5min
+Restart=on-failure
+RestartSec=20s
 
 [Install]
 WantedBy=multi-user.target

assets/systemd/furtka-welcome.service

@@ -1,12 +1,12 @@
 [Unit]
 Description=Furtka console welcome banner
-After=network-online.target
-Wants=network-online.target
+# No network-online dependency on purpose: paint the banner (with a
+# "no IP yet" fallback) as early as possible; furtka-welcome.timer re-runs
+# it every few seconds so the address appears as soon as DHCP delivers.
 
 [Service]
 Type=oneshot
 ExecStart=/opt/furtka/current/assets/bin/furtka-welcome
-RemainAfterExit=yes
 
 [Install]
 WantedBy=multi-user.target

assets/systemd/furtka-welcome.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Keep the Furtka console welcome (IP fallback) up to date
+
+[Timer]
+OnBootSec=3s
+OnUnitActiveSec=5s
+AccuracySec=1s
+
+[Install]
+WantedBy=timers.target

assets/www/style.css

@@ -322,6 +322,16 @@ details.log-details[open] > summary { color: var(--fg); }
 }
 .modal .error.show,
 .login-wrap .error.show { display: block; }
+.modal .dep-list {
+    margin: 0 0 1rem;
+    padding: 0.75rem 1rem 0.75rem 1.75rem;
+    background: var(--bg);
+    border: 1px solid var(--border);
+    border-radius: var(--r-sm);
+    font-size: 0.9rem;
+    line-height: 1.4;
+}
+.modal .dep-list li { margin: 0.15rem 0; }
 
 /* Login + first-run setup page. Shares .wrap's max-width so the form
    sits in the same column the rest of the app uses, just without the

docs/hardware-test-2026-08.md

@@ -0,0 +1,75 @@
+# Hardware test report — "junk bench", 2026-08-24/26
+
+First end-to-end run of Furtka on real hardware that was not a Proxmox VM
+and not the Medion box: a bare old-laptop mainboard lying on the desk, a
+1 TB Crucial BX SATA SSD that had previously lived in a Proxmox VE host, a
+USB hub for keyboard + boot stick, LAN cable, HDMI monitor. Tester: Daniel.
+Release under test: **26.19-alpha**, then self-updated to **26.20-alpha**.
+
+Why it mattered: every bug below is invisible on the smoke VM. A VM has a
+fresh empty disk, a fast virtual NIC, UEFI firmware and no USB stick to pull.
+
+## Timeline
+
+| When | What happened | Outcome |
+|---|---|---|
+| 08-24 | ISO flashed with Fedora Media Writer, bench booted, browser opened `proski.local:5000` | "Server Not Found" — **typo** (`proski` vs `proksi`). Bench powered off. |
+| 08-25 | `proksi.local:5000` — wizard came up (BIOS/syslinux boot path, stock Arch splash) | OK |
+| 08-25 13:07 | Install run 1 | **Failed at 12 %**: `Partition(s) 2, 3 on /dev/sda have been written, but we have been unable to inform the kernel of the change … in use` |
+| 08-25 | Root shell over SSH (`passwd` + `ssh-copy-id` on the live ISO): SSD still carried a Proxmox VE `pve` volume group (swap, root, thin pool); udev had activated it, six device-mapper nodes sat on `sda3` | Cleared by hand: `dmsetup remove` ×6, `wipefs -a /dev/sda`, `blockdev --rereadpt` |
+| 08-25 13:16 | Install run 2 | `Installation completed without any errors`; BIOS detected → `Grub`, MBR table, `sda1` 1 G vfat `/boot`, `sda2` ext4 `/` |
+| 08-25 | "Reboot now" clicked | Box **booted the USB stick again** (BIOS order). Stick pulled, rebooted → `furtka.local` = 192.168.178.142, Caddy answering |
+| 08-25 16:22 | First boot of the installed system | `furtka-catalog-sync.service` failed: `Network is unreachable`. `network-online.target` had fired on the IPv6 SLAAC address ~1 s before DHCPv4 landed. State file stuck on `checking`, apps page empty; next timer run would have been 18:26 |
+| 08-25 ~17:00 | Catalog synced via the "Sync apps catalog" button | Catalog 26.13-alpha, 7 apps listed |
+| 08-25 17:47 | 26.20-alpha released with the fixes below | Box reports `Update available: 26.19-alpha → 26.20-alpha` |
+| 08-26 09:34 | Self-update to 26.20-alpha from `/settings` | `current → 26.20-alpha`, no failed units. **New finding:** `furtka-welcome.timer` linked + enabled by the updater but `inactive (dead)` — `enable` alone only arms it for the next boot |
+
+## Findings and fixes
+
+| # | Finding | Root cause | Fix | Shipped in | Validated on hardware |
+|---|---|---|---|---|---|
+| 1 | Console banner showed only `proksi.local` / `furtka.local`, never the IP fallback | Banner script was a oneshot after `network-online.target` and dropped the IP line when no address existed yet. On the live ISO releng's root autologin on tty1 also made `agetty --reload` a no-op | `furtka-issue.timer` (ISO) / `furtka-welcome.timer` (installed) re-run the script every 5 s; fallback line is always present ("no IP address yet — check the cable / DHCP" until one arrives); ISO no longer auto-logs root in on tty1 | 26.20-alpha (`0e05bef`) | Installed side: pending reboot or next update. ISO side: pending reinstall from the 26.20 ISO |
+| 2 | Install failed at partitioning on a disk with a previous OS | Live ISO ships lvm2/mdadm/dmraid/cryptsetup; udev auto-activates whatever the disk carries; parted cannot re-read the partition table while dm nodes hold the partitions | `webinstaller/diskprep.py`: `release_disk()` runs before archinstall — swapoff/umount leaves-first, `dmsetup remove` / `mdadm --stop`, `wipefs -a`, `blockdev --rereadpt`; steps logged at the top of the install log; progress page names this failure explicitly | 26.20-alpha (`5ddda53`) | Pending reinstall from the 26.20 ISO (the disk now carries Furtka itself, which exercises the same path minus LVM) |
+| 3 | "Remove the USB stick" was easy to miss — the box booted the installer again | Hint lived on the *rebooting* page and in a `confirm()` popup, i.e. after the click, with the machine restarting 3 s later | Done state shows a two-step list (pull the stick → restart) above the button; button reads "USB stick is out — restart now" | 26.20-alpha (`60404ae`) | Pending reinstall |
+| 4 | No apps after first boot | Boot-time catalog sync raced DHCPv4 (IPv6 made `network-online` fire early), no retry, timer jitter pushed the next attempt 2 h out, state file stuck on `checking` | `furtka-catalog-sync.service` retries on failure (20 s, up to 8× in 15 min); failures recorded as stage `error`; apps page shows "last sync failed: …" | 26.20-alpha (`32ba522`) | Retry config confirmed live on the box after the update; a cold boot with the new unit is still pending |
+| 5 | New timer dead after self-update | `_link_new_units()` linked + enabled but never started the timer; also linked from the versioned dir instead of `current` | Link via `current`, enable, start | Unreleased (this branch) | — |
+
+Not a bug, but worth knowing: on this board the BIOS boots the USB stick
+before the SSD, so every reinstall needs the stick pulled at the reboot
+prompt. The stock Arch splash on the BIOS/syslinux boot path is unbranded
+(only menu labels are) — cosmetic.
+
+## What worked first time
+
+- Fedora Media Writer → hybrid ISO boots on BIOS firmware.
+- mDNS: `proksi.local` (live ISO) and `furtka.local` (installed) resolved
+  from a Fedora client once spelled correctly.
+- BIOS detection → `Grub` + MBR layout; the installed system booted from
+  the SSD without intervention.
+- Login, `/settings`, catalog sync via the UI button, `furtka update --check`,
+  self-update 26.19 → 26.20 with symlink flip and clean unit state.
+- Time sync, Docker 29.7.2, Caddy on :80, sshd with key auth for the wizard
+  user (`wheel` + `docker` groups as configured).
+
+## Still open from this run
+
+- Reinstall from the 26.20-alpha ISO on the bench to validate findings 1–3
+  on the ISO side (the installed side of #1 validates on the next reboot).
+- Cold boot with the retrying catalog-sync unit (#4) on a dual-stack LAN.
+- Rebrand the syslinux boot splash.
+- `smoke-latest.yml` is `workflow_dispatch` only and has not run since
+  April; the smoke VM would not have caught any of the above anyway, but it
+  is currently not running at all.
+
+## Reproducing the bench conditions in a VM
+
+Most of this can be provoked on Proxmox if you want a regression check
+without the hardware:
+
+- Finding 2: attach a disk that already carries an LVM install (e.g. a
+  spare Proxmox VE or Ubuntu LVM disk image) before booting the ISO.
+- Finding 3: leave the ISO attached as CD-ROM with boot order CD-first.
+- Finding 4: give the VM's bridge IPv6 RA before DHCPv4 — harder; the
+  retry logic is unit-tested instead.
+- Finding 1: use SeaBIOS instead of OVMF (the README notes SeaBIOS fails on
+  `ldlinux.c32` from this ISO, so this one really needs hardware).

furtka/api.py

@@ -21,7 +21,7 @@ import time
 from http.cookies import SimpleCookie
 from http.server import BaseHTTPRequestHandler, HTTPServer
 
-from furtka import auth, dockerops, install_runner, installer, reconciler, sources
+from furtka import auth, deps, dockerops, install_runner, installer, reconciler, sources
 from furtka.manifest import ManifestError, load_manifest
 from furtka.paths import apps_dir, static_www_dir
 from furtka.scanner import scan
@@ -152,7 +152,10 @@ const modal = {
   error: document.getElementById('modal-error'),
   submit: document.getElementById('modal-submit'),
   cancel: document.getElementById('modal-cancel'),
-  current: null,  // { name, action: 'install' | 'edit' }
+  // current: { name, action: 'install' | 'edit', confirmDeps?: bool }
+  // confirmDeps == true means the dependency-confirm step was already passed,
+  // so submitModal sends confirm_dependencies:true to the API.
+  current: null,
 };
 
 modal.cancel.addEventListener('click', () => closeModal());
@@ -167,7 +170,7 @@ function closeModal() {
   modal.current = null;
 }
 
-async function openSettingsDialog(name, action) {
+async function openSettingsDialog(name, action, opts = {}) {
   const r = await fetch(`/api/apps/${encodeURIComponent(name)}/settings`);
   if (!r.ok) {
     document.getElementById('log').textContent =
@@ -175,7 +178,7 @@ async function openSettingsDialog(name, action) {
     return;
   }
   const data = await r.json();
-  modal.current = { name, action };
+  modal.current = { name, action, confirmDeps: !!opts.confirmDeps };
   modal.title.textContent = data.display_name || data.name;
   modal.long.textContent = data.description_long || data.description || '';
   modal.long.style.display = modal.long.textContent ? '' : 'none';
@@ -221,10 +224,30 @@ modal.submit.addEventListener('click', submitModal);
 const INSTALL_STAGE_LABELS = {
   'pulling_image': 'Image wird heruntergeladen…',
   'creating_volumes': 'Speicherbereiche werden erstellt…',
+  'running_hooks': 'Verknüpfungen werden eingerichtet…',
   'starting_container': 'Container wird gestartet…',
   'done': 'Fertig',
 };
 
+// Confirm dialog for transitive dependencies: "Installing X also installs
+// Y, Z — proceed?". Reuses the existing modal CSS/structure; the submit
+// button on confirm reopens openSettingsDialog with confirmDeps=true.
+async function openDependencyConfirmDialog(name, plan) {
+  modal.current = { name, action: 'install-confirm-deps' };
+  modal.title.textContent = `Install ${name}: dependencies required`;
+  const transitive = plan.summaries.filter(s => s.name !== name && !s.installed);
+  const long = transitive.length === 1
+    ? `Installing ${name} requires ${transitive[0].display_name || transitive[0].name}. It will be installed and configured automatically.`
+    : `Installing ${name} requires ${transitive.length} additional apps. They will be installed and configured automatically.`;
+  modal.long.textContent = long;
+  modal.long.style.display = '';
+  modal.form.innerHTML = '<ul class="dep-list">'
+    + transitive.map(s => `<li><strong>${esc(s.display_name || s.name)}</strong>${s.description ? ' — ' + esc(s.description) : ''}</li>`).join('')
+    + '</ul>';
+  modal.submit.textContent = 'Install all and continue';
+  modal.backdrop.classList.add('open');
+}
+
 async function pollInstallStatus(original) {
   // Two-minute ceiling: Jellyfin over a slow DSL line can take ~90s
   // just on the image pull. Beyond that something's stuck — the
@@ -261,7 +284,15 @@ async function pollInstallStatus(original) {
 
 async function submitModal() {
   if (!modal.current) return;
-  const { name, action } = modal.current;
+  const { name, action, confirmDeps } = modal.current;
+  // Two-step dance: when this is the dep-confirm step, transition straight
+  // into the settings dialog with confirmDeps flagged so the actual install
+  // POST carries `confirm_dependencies: true`.
+  if (action === 'install-confirm-deps') {
+    closeModal();
+    await openSettingsDialog(name, 'install', { confirmDeps: true });
+    return;
+  }
   const values = {};
   for (const input of modal.form.querySelectorAll('input')) {
     // In edit mode, skip password fields left blank — server keeps existing.
@@ -276,7 +307,9 @@ async function submitModal() {
     const url = action === 'install'
       ? '/api/apps/install'
       : `/api/apps/${encodeURIComponent(name)}/settings`;
-    const body = action === 'install' ? { name, settings: values } : { settings: values };
+    const body = action === 'install'
+      ? { name, settings: values, ...(confirmDeps ? { confirm_dependencies: true } : {}) }
+      : { settings: values };
     const r = await fetch(url, {
       method: 'POST',
       headers: {'Content-Type': 'application/json'},
@@ -363,8 +396,37 @@ async function refresh() {
 }
 
 async function handleButton(op, name, btn) {
-  if (op === 'install' || op === 'edit') {
-    openSettingsDialog(name, op === 'install' ? 'install' : 'edit');
+  if (op === 'install') {
+    // Check dependencies before opening the settings form. If the target
+    // has transitive providers we need to install, show the confirm modal
+    // first; the user then proceeds to the regular settings form, which
+    // POSTs with confirm_dependencies:true.
+    try {
+      const r = await fetch('/api/apps/install/plan', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({name}),
+      });
+      const plan = await r.json();
+      if (!r.ok) {
+        document.getElementById('log').textContent =
+          `[install ${name}] HTTP ${r.status}\\n` + JSON.stringify(plan, null, 2);
+        return;
+      }
+      const transitive = (plan.to_install || []).filter(n => n !== name);
+      if (transitive.length > 0) {
+        openDependencyConfirmDialog(name, plan);
+        return;
+      }
+    } catch (e) {
+      // Network blip — fall through to the legacy single-app path; the API
+      // would reject again if deps actually were required.
+    }
+    openSettingsDialog(name, 'install');
+    return;
+  }
+  if (op === 'edit') {
+    openSettingsDialog(name, 'edit');
     return;
   }
   // Reinstall + update + remove are direct actions, no form.
@@ -390,6 +452,9 @@ async function handleButton(op, name, btn) {
         ? ` — updated ${data.services.length} service(s)`
         : ' — already up to date';
     }
+    if (op === 'remove' && r.status === 409 && data.dependents) {
+      header += ` — blocked by: ${data.dependents.join(', ')}`;
+    }
     document.getElementById('log').textContent = header + '\\n' + JSON.stringify(data, null, 2);
     // Reinstall dispatches an async install the same way the modal does
     // — follow the background job on the button label until terminal.
@@ -425,7 +490,11 @@ async function refreshCatalog() {
   const updatedAt = (status.state || {}).updated_at || '';
   document.getElementById('catalog-last-sync').textContent = updatedAt || 'never';
   const stageEl = document.getElementById('catalog-stage');
-  if (stage && stage !== 'done') {
+  if (stage === 'error') {
+    const err = (status.state || {}).error || 'unknown error';
+    stageEl.textContent = '· last sync failed: ' + err;
+    stageEl.classList.add('pending');
+  } else if (stage && stage !== 'done') {
     stageEl.textContent = '· ' + stage + '…';
     stageEl.classList.add('pending');
   } else {
@@ -596,6 +665,10 @@ def _manifest_summary(m, app_dir=None):
         # Optional template URL with `{host}` placeholder; frontend
         # substitutes against location.hostname at render time.
         "open_url": m.open_url,
+        "requires": [
+            {"app": req.app, "on_install": req.on_install, "on_start": req.on_start}
+            for req in m.requires
+        ],
     }
 
 
@@ -695,7 +768,41 @@ def _do_get_settings(name):
 _INSTALL_TERMINAL_STAGES = frozenset({"done", "error"})
 
 
-def _do_install(name, settings=None):
+def _do_install_plan(name):
+    """Compute a dependency plan for installing `name`.
+
+    Read-only — no FS mutation, doesn't take the install lock. The UI calls
+    this before opening the settings dialog so it can show a "this will also
+    install X, Y" confirm step when the target has transitive deps.
+    """
+    try:
+        plan = deps.plan_install(name)
+    except deps.DependencyError as e:
+        return 400, {"error": str(e)}
+    summaries: list[dict] = []
+    for app_name in plan.install_order:
+        m, _values, installed = _load_manifest_for(app_name)
+        if m is None:
+            return 400, {"error": f"could not load manifest for {app_name!r}"}
+        # Per-entry source folder for icon resolution — installed wins.
+        if installed:
+            src_dir = apps_dir() / app_name
+        else:
+            resolved = sources.resolve_app_name(app_name)
+            src_dir = resolved.path if resolved is not None else None
+        summary = _manifest_summary(m, src_dir)
+        summary["installed"] = installed
+        summaries.append(summary)
+    return 200, {
+        "target": plan.target,
+        "install_order": list(plan.install_order),
+        "already_installed": sorted(plan.already_installed),
+        "to_install": list(plan.to_install),
+        "summaries": summaries,
+    }
+
+
+def _do_install(name, settings=None, confirm_dependencies=False):
     """Kick off an app install. Synchronous sync-phase + async docker-phase.
 
     Fast parts run inline so validation failures come back as immediate
@@ -722,6 +829,25 @@ def _do_install(name, settings=None):
             )
         }
 
+    # Resolve dependencies before taking the lock so a 4xx (cycle, missing
+    # provider) comes back fast without ever touching install state.
+    try:
+        plan = deps.plan_install(name)
+    except deps.DependencyError as e:
+        return 400, {"error": str(e)}
+
+    # If installing `name` pulls in transitive providers, require an explicit
+    # `confirm_dependencies: true` so the UI gets a chance to show the user
+    # what's about to land. The 409 body carries the plan so the UI can
+    # render the confirm modal without a second `/plan` round-trip.
+    transitive = [n for n in plan.to_install if n != name]
+    if transitive and not confirm_dependencies:
+        status, body = _do_install_plan(name)
+        if status != 200:
+            return status, body
+        body["error"] = "additional apps required — set confirm_dependencies: true"
+        return 409, body
+
     # Fast-fail if another install is already in flight. Lock lives under
     # /run/ so a previous reboot clears it automatically.
     try:
@@ -730,13 +856,32 @@ def _do_install(name, settings=None):
         return 409, {"error": str(e)}
     try:
         try:
-            src = installer.resolve_source(name)
-            target = installer.install_from(src, settings=settings)
+            if plan.to_install:
+                targets = installer.install_plan(plan, settings_target=settings)
+                target = targets[-1]
+            else:
+                # Reinstall of an already-installed target with no new
+                # transitive providers — re-run the single-app path so an
+                # edited `.env` lands correctly.
+                src = installer.resolve_source(name)
+                target = installer.install_from(src, settings=settings)
         except installer.InstallError as e:
             return 400, {"error": str(e)}
+        # Write the plan file the background runner reads. Even single-app
+        # installs go through it so install_runner has one code path.
+        install_runner.plan_path().parent.mkdir(parents=True, exist_ok=True)
+        install_runner.plan_path().write_text(
+            json.dumps(
+                {
+                    "target": name,
+                    "to_install": list(plan.to_install) if plan.to_install else [name],
+                }
+            )
+        )
         # Initial state so the UI has something to show between this
         # response and the background job's first write.
-        install_runner.write_state("pulling_image", app=name)
+        first_app = plan.to_install[0] if plan.to_install else name
+        install_runner.write_state("pulling_image", app=first_app, target=name)
     finally:
         # Release the lock so the background job can re-acquire it.
         fh.close()
@@ -801,6 +946,12 @@ def _do_remove(name):
     target = apps_dir() / name
     if not target.exists():
         return 404, {"error": f"{name!r} is not installed"}
+    dependents = deps.dependents_of(name)
+    if dependents:
+        return 409, {
+            "error": (f"{name!r} is required by: {', '.join(dependents)}. Remove those first."),
+            "dependents": list(dependents),
+        }
     compose_warning = None
     try:
         dockerops.compose_down(target, name)
@@ -1369,11 +1520,14 @@ class _Handler(BaseHTTPRequestHandler):
         if not isinstance(name, str) or not name:
             return self._json(400, {"error": "missing or empty 'name' field"})
 
-        if self.path == "/api/apps/install":
+        if self.path == "/api/apps/install/plan":
+            status, body = _do_install_plan(name)
+        elif self.path == "/api/apps/install":
             settings = _parse_settings_body(payload)
             if settings is False:
                 return self._json(400, {"error": "'settings' must be an object"})
-            status, body = _do_install(name, settings=settings)
+            confirm = bool(payload.get("confirm_dependencies", False))
+            status, body = _do_install(name, settings=settings, confirm_dependencies=confirm)
         elif self.path == "/api/apps/remove":
             status, body = _do_remove(name)
         else:

furtka/catalog.py

@@ -204,50 +204,63 @@ def _atomic_swap(staging: Path) -> None:
 def sync_catalog() -> CatalogCheck:
     """End-to-end sync. Acquires the lock, writes state at each stage, and
     leaves the live catalog untouched on any failure before the rename step.
+
+    A failure lands as stage ``"error"`` (with the message) instead of leaving
+    the last in-flight stage behind: the first hardware bench sat on
+    ``"checking"`` for hours after a boot-time network failure, and the UI
+    showed "checking…" with nothing actually happening.
     """
     with acquire_lock():
-        write_state("checking")
-        check = check_catalog()
-        if not check.update_available:
-            write_state("done", version=check.current or check.latest, note="already up to date")
-            return check
-        if not check.tarball_url or not check.sha256_url:
-            raise CatalogError("catalog release is missing tarball or sha256 asset")
-
-        # Downloads land in a sibling of the live catalog so half-finished
-        # artefacts never pollute the live tree, and stay under /var/lib/
-        # furtka/ so a sync interrupted by reboot can resume instead of
-        # starting over from /tmp (which clears).
-        dl_dir = catalog_dir().with_name(catalog_dir().name + _DOWNLOADS_NAME)
-        dl_dir.mkdir(parents=True, exist_ok=True)
-        tarball = dl_dir / f"furtka-apps-{check.latest}.tar.gz"
-        sha_file = dl_dir / f"furtka-apps-{check.latest}.tar.gz.sha256"
-
-        write_state("downloading", latest=check.latest)
-        _rc.download(check.tarball_url, tarball, error_cls=CatalogError)
-        _rc.download(check.sha256_url, sha_file, error_cls=CatalogError)
-
-        write_state("verifying", latest=check.latest)
-        expected = _rc.parse_sha256_sidecar(sha_file.read_text(), error_cls=CatalogError)
-        _rc.verify_tarball(tarball, expected, error_cls=CatalogError)
-
-        write_state("extracting", latest=check.latest)
-        staging = catalog_dir().with_name(catalog_dir().name + _STAGING_NAME)
-        if staging.exists():
-            shutil.rmtree(staging)
         try:
-            _rc.extract_tarball(tarball, staging, error_cls=CatalogError)
-            _validate_staging(staging, check.latest)
-        except CatalogError:
-            shutil.rmtree(staging, ignore_errors=True)
+            return _sync_locked()
+        except CatalogError as e:
+            write_state("error", error=str(e))
             raise
 
-        write_state("swapping", latest=check.latest)
-        try:
-            _atomic_swap(staging)
-        except CatalogError:
-            shutil.rmtree(staging, ignore_errors=True)
-            raise
 
-        write_state("done", version=check.latest, previous=check.current)
+def _sync_locked() -> CatalogCheck:
+    write_state("checking")
+    check = check_catalog()
+    if not check.update_available:
+        write_state("done", version=check.current or check.latest, note="already up to date")
         return check
+    if not check.tarball_url or not check.sha256_url:
+        raise CatalogError("catalog release is missing tarball or sha256 asset")
+
+    # Downloads land in a sibling of the live catalog so half-finished
+    # artefacts never pollute the live tree, and stay under /var/lib/
+    # furtka/ so a sync interrupted by reboot can resume instead of
+    # starting over from /tmp (which clears).
+    dl_dir = catalog_dir().with_name(catalog_dir().name + _DOWNLOADS_NAME)
+    dl_dir.mkdir(parents=True, exist_ok=True)
+    tarball = dl_dir / f"furtka-apps-{check.latest}.tar.gz"
+    sha_file = dl_dir / f"furtka-apps-{check.latest}.tar.gz.sha256"
+
+    write_state("downloading", latest=check.latest)
+    _rc.download(check.tarball_url, tarball, error_cls=CatalogError)
+    _rc.download(check.sha256_url, sha_file, error_cls=CatalogError)
+
+    write_state("verifying", latest=check.latest)
+    expected = _rc.parse_sha256_sidecar(sha_file.read_text(), error_cls=CatalogError)
+    _rc.verify_tarball(tarball, expected, error_cls=CatalogError)
+
+    write_state("extracting", latest=check.latest)
+    staging = catalog_dir().with_name(catalog_dir().name + _STAGING_NAME)
+    if staging.exists():
+        shutil.rmtree(staging)
+    try:
+        _rc.extract_tarball(tarball, staging, error_cls=CatalogError)
+        _validate_staging(staging, check.latest)
+    except CatalogError:
+        shutil.rmtree(staging, ignore_errors=True)
+        raise
+
+    write_state("swapping", latest=check.latest)
+    try:
+        _atomic_swap(staging)
+    except CatalogError:
+        shutil.rmtree(staging, ignore_errors=True)
+        raise
+
+    write_state("done", version=check.latest, previous=check.current)
+    return check

furtka/cli.py

@@ -1,8 +1,9 @@
 import argparse
 import json
 import sys
+from pathlib import Path
 
-from furtka import dockerops, installer, reconciler
+from furtka import deps, dockerops, installer, reconciler
 from furtka.paths import apps_dir
 from furtka.scanner import scan
 
@@ -37,6 +38,14 @@ def _cmd_app_list(args: argparse.Namespace) -> int:
                         }
                         for s in r.manifest.settings
                     ],
+                    "requires": [
+                        {
+                            "app": req.app,
+                            "on_install": req.on_install,
+                            "on_start": req.on_start,
+                        }
+                        for req in r.manifest.requires
+                    ],
                 }
                 if r.manifest
                 else None,
@@ -58,17 +67,64 @@ def _cmd_app_list(args: argparse.Namespace) -> int:
 
 
 def _cmd_app_install(args: argparse.Namespace) -> int:
+    # If the user passed a path (or a path-ish thing), bypass dep resolution —
+    # local paths are dev/test workflows where the caller knows what they want.
+    # These just copy + reconcile; no `requires`/hook handling.
+    src_path = Path(args.source)
+    is_path = src_path.is_dir() or "/" in args.source or args.source.startswith(".")
+    if is_path:
+        try:
+            src = installer.resolve_source(args.source)
+            target = installer.install_from(src)
+        except installer.InstallError as e:
+            print(f"error: {e}", file=sys.stderr)
+            return 2
+        print(f"installed {target.name} to {target}")
+        actions = reconciler.reconcile(apps_dir())
+        for a in actions:
+            print(f"  {a.describe()}")
+        return 1 if reconciler.has_errors(actions) else 0
+
+    # Catalog/bundled name install: resolve transitive `requires`, copy every
+    # app folder (the synchronous phase the API runs inline), then drive the
+    # exact same docker phase the API dispatches via systemd-run — so providers
+    # come up before consumers and `on_install` hooks fire to provision them.
+    # Going through run_install (not a bare reconcile) is what makes a CLI
+    # install of a consumer actually provision against its provider.
+    from furtka import install_runner
+
     try:
-        src = installer.resolve_source(args.source)
-        target = installer.install_from(src)
+        plan = deps.plan_install(args.source)
+    except deps.DependencyError as e:
+        print(f"error: {e}", file=sys.stderr)
+        return 2
+    try:
+        if plan.to_install:
+            installer.install_plan(plan)
+            to_install = list(plan.to_install)
+        else:
+            # Target already installed — reinstall to refresh files, then still
+            # run the docker phase so hooks re-fire (matches API reinstall).
+            installer.install_from(installer.resolve_source(args.source))
+            to_install = [args.source]
     except installer.InstallError as e:
         print(f"error: {e}", file=sys.stderr)
         return 2
-    print(f"installed {target.name} to {target}")
-    actions = reconciler.reconcile(apps_dir())
-    for a in actions:
-        print(f"  {a.describe()}")
-    return 1 if reconciler.has_errors(actions) else 0
+
+    # Stage the plan file run_install consumes (it removes it after reading).
+    install_runner.plan_path().parent.mkdir(parents=True, exist_ok=True)
+    install_runner.plan_path().write_text(
+        json.dumps({"target": args.source, "to_install": to_install})
+    )
+    try:
+        install_runner.run_install(args.source)
+    except Exception as e:
+        # run_install already wrote state="error"; surface it to the caller.
+        print(f"error: {e}", file=sys.stderr)
+        return 1
+    for name in to_install:
+        print(f"installed {name}")
+    return 0
 
 
 def _cmd_app_install_bg(args: argparse.Namespace) -> int:
@@ -94,6 +150,13 @@ def _cmd_app_remove(args: argparse.Namespace) -> int:
     if not target.exists():
         print(f"error: {args.name!r} is not installed", file=sys.stderr)
         return 1
+    dependents = deps.dependents_of(args.name)
+    if dependents:
+        print(
+            f"error: {args.name!r} is required by: {', '.join(dependents)}. Remove those first.",
+            file=sys.stderr,
+        )
+        return 2
     try:
         dockerops.compose_down(target, args.name)
     except dockerops.DockerError as e:

furtka/deps.py

@@ -0,0 +1,237 @@
+"""App-to-app dependency planning.
+
+A manifest may declare ``requires: [{"app": "<name>", "on_install": ...,
+"on_start": ...}]``. This module turns that graph into:
+
+- ``plan_install(name)`` — topo-sorted install order so providers come up
+  before consumers, with cycle detection. Read-only over the catalog +
+  installed tree; the installer is the one that mutates.
+- ``dependents_of(name)`` — installed apps that name ``<name>`` in their
+  ``requires``. Used by the remove guard to block "rip out mosquitto"
+  while zigbee2mqtt is still installed.
+- ``installed_topo_order(scan_results)`` — re-order a list of installed
+  apps so reconcile's per-boot sweep visits providers before consumers
+  (so a consumer's ``on_start`` hook runs against an already-up provider).
+- ``provider_exec_service(provider_dir, project)`` — pick the compose
+  service to ``docker compose exec`` into when firing a hook. v1: first
+  service in the provider's compose config.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+
+from furtka import dockerops, sources
+from furtka.manifest import Manifest, ManifestError, load_manifest
+from furtka.paths import apps_dir
+from furtka.scanner import ScanResult, scan
+
+
+class DependencyError(RuntimeError):
+    pass
+
+
+@dataclass(frozen=True)
+class DepPlan:
+    target: str
+    install_order: tuple[str, ...]  # topo: providers first, target last
+    already_installed: frozenset[str]
+    to_install: tuple[str, ...]  # install_order minus already_installed
+
+
+def _load_any(name: str) -> Manifest | None:
+    """Load `<name>`'s manifest — prefer installed, fall back to catalog/bundled.
+
+    Returns None if the app exists nowhere we can see. Caller decides how
+    loud to be about that — `plan_install` raises, `dependents_of` just
+    skips entries it can't parse so reconcile keeps working.
+    """
+    installed = apps_dir() / name / "manifest.json"
+    if installed.is_file():
+        try:
+            return load_manifest(installed, expected_name=name)
+        except ManifestError:
+            return None
+    src = sources.resolve_app_name(name)
+    if src is None:
+        return None
+    try:
+        return load_manifest(src.path / "manifest.json")
+    except ManifestError:
+        return None
+
+
+def _installed_names() -> frozenset[str]:
+    return frozenset(r.manifest.name for r in scan(apps_dir()) if r.ok)
+
+
+def plan_install(name: str) -> DepPlan:
+    """Build a topo-sorted install plan for `name`.
+
+    Walks the dependency graph via the catalog/bundled+installed manifests,
+    detects cycles, and returns the order plus which entries are already
+    installed (those get skipped at install time but stay in `install_order`
+    for sequencing the `on_install` hooks correctly).
+    """
+    WHITE, GRAY, BLACK = 0, 1, 2
+    color: dict[str, int] = {}
+    order: list[str] = []
+    stack_chain: list[str] = []
+
+    # Iterative post-order DFS with a per-frame iterator over children.
+    # Cycle detection uses GRAY-on-GRAY (Tarjan-style) so a chain through
+    # several apps still surfaces the full path in the error message.
+
+    def visit(start: str) -> None:
+        if color.get(start, WHITE) == BLACK:
+            return
+        # Each frame: (name, manifest, iterator over sorted requires)
+        m = _load_any(start)
+        if m is None:
+            raise DependencyError(
+                f"required app {start!r} not found in installed apps, catalog, or bundled apps"
+            )
+        # Sort requires alphabetically for deterministic install order.
+        children = iter(sorted(r.app for r in m.requires))
+        stack: list[tuple[str, Manifest, "object"]] = [(start, m, children)]  # noqa: UP037
+        color[start] = GRAY
+        stack_chain.append(start)
+        while stack:
+            cur_name, cur_m, it = stack[-1]
+            child = next(it, None)
+            if child is None:
+                # All children processed — emit and pop.
+                color[cur_name] = BLACK
+                order.append(cur_name)
+                stack.pop()
+                stack_chain.pop()
+                continue
+            c = color.get(child, WHITE)
+            if c == BLACK:
+                continue
+            if c == GRAY:
+                # Cycle — find the back-edge target in the chain and report.
+                idx = stack_chain.index(child)
+                cycle = " -> ".join(stack_chain[idx:] + [child])
+                raise DependencyError(f"circular dependency: {cycle}")
+            # WHITE — descend.
+            child_m = _load_any(child)
+            if child_m is None:
+                raise DependencyError(
+                    f"required app {child!r} (needed by {cur_name!r}) "
+                    "not found in installed apps, catalog, or bundled apps"
+                )
+            color[child] = GRAY
+            stack_chain.append(child)
+            stack.append((child, child_m, iter(sorted(r.app for r in child_m.requires))))
+
+    visit(name)
+    installed = _installed_names()
+    to_install = tuple(n for n in order if n not in installed)
+    return DepPlan(
+        target=name,
+        install_order=tuple(order),
+        already_installed=frozenset(n for n in order if n in installed),
+        to_install=to_install,
+    )
+
+
+def dependents_of(name: str) -> tuple[str, ...]:
+    """Names of installed apps that declare `<name>` in their `requires`.
+
+    Used by the remove guard. Result is sorted alphabetically so error
+    messages read in a stable order.
+    """
+    out: list[str] = []
+    for r in scan(apps_dir()):
+        if not r.ok:
+            continue
+        if any(req.app == name for req in r.manifest.requires):
+            out.append(r.manifest.name)
+    out.sort()
+    return tuple(out)
+
+
+def installed_topo_order(results: list[ScanResult]) -> list[ScanResult]:
+    """Re-order installed apps so providers come before consumers.
+
+    Apps whose `requires` point at uninstalled providers (or that contain
+    cycles) are emitted at the tail in their original order — reconcile
+    already isolates per-app failure so we don't want to abort the whole
+    sweep on a misconfigured manifest. Ties within a tier stay alphabetical
+    (the scanner already returns alphabetical), matching the deterministic
+    boot order users rely on.
+    """
+    ok = [r for r in results if r.ok]
+    bad = [r for r in results if not r.ok]
+    by_name = {r.manifest.name: r for r in ok}
+
+    # Kahn's algorithm against the installed subgraph only. Edges from
+    # consumer -> provider; we want providers first, so build the indegree
+    # over consumers ("how many of MY providers are still pending").
+    pending_providers: dict[str, set[str]] = {}
+    consumers_of: dict[str, list[str]] = {n: [] for n in by_name}
+    for r in ok:
+        deps = {req.app for req in r.manifest.requires if req.app in by_name}
+        pending_providers[r.manifest.name] = deps
+        for dep in deps:
+            consumers_of[dep].append(r.manifest.name)
+
+    # Seed with anything that has no installed providers, alphabetical.
+    ready = sorted(n for n, deps in pending_providers.items() if not deps)
+    ordered: list[str] = []
+    while ready:
+        # Pop the alphabetically-smallest so ties stay deterministic.
+        n = ready.pop(0)
+        ordered.append(n)
+        for consumer in consumers_of[n]:
+            pending_providers[consumer].discard(n)
+            if not pending_providers[consumer]:
+                # Insert in sorted position.
+                _insort(ready, consumer)
+
+    # Anything left has unresolved providers (missing or cyclic) — append
+    # in scanner order so reconcile still tries them and gets a clean
+    # per-app error.
+    leftover = [n for n in by_name if n not in set(ordered)]
+    leftover_set = set(leftover)
+    leftover_in_scan_order = [r.manifest.name for r in ok if r.manifest.name in leftover_set]
+
+    out = [by_name[n] for n in ordered]
+    out.extend(by_name[n] for n in leftover_in_scan_order)
+    out.extend(bad)  # broken manifests already had their place in `results`; append last
+    return out
+
+
+def _insort(seq: list[str], value: str) -> None:
+    """Insert `value` into the sorted list `seq` (keeping it sorted)."""
+    lo, hi = 0, len(seq)
+    while lo < hi:
+        mid = (lo + hi) // 2
+        if seq[mid] < value:
+            lo = mid + 1
+        else:
+            hi = mid
+    seq.insert(lo, value)
+
+
+def provider_exec_service(provider_dir: Path, project: str) -> str:
+    """Pick the compose service name to `docker compose exec` into for a hook.
+
+    v1: first service in the provider's compose file. Works for the apps we
+    actually have (Mosquitto, Postgres, Redis — all single-service). When a
+    multi-service provider (Authentik etc.) lands, the deferred follow-up is
+    to add an explicit `service` field on the Requirement entry.
+
+    Falls back to the project name if compose config can't be read — that's
+    a desperate guess but better than crashing, and the resulting exec error
+    will be surfaced cleanly as a DockerError to the caller.
+    """
+    try:
+        cfg = dockerops.compose_image_tags(provider_dir, project)
+    except dockerops.DockerError:
+        return project
+    if not cfg:
+        return project
+    return next(iter(cfg.keys()))

furtka/dockerops.py

@@ -60,6 +60,88 @@ def compose_pull(app_dir: Path, project: str) -> None:
     _run([*_compose_args(app_dir, project), "pull"], cwd=app_dir)
 
 
+def compose_exec(
+    app_dir: Path,
+    project: str,
+    service: str,
+    argv: list[str],
+    *,
+    env: dict[str, str] | None = None,
+    timeout: float | None = None,
+) -> str:
+    """`docker compose exec -T <service> <argv...>`. Returns captured stdout.
+
+    `-T` disables TTY allocation — required when called from a non-interactive
+    parent (the install background job, the reconcile service). Without it,
+    docker exits with "the input device is not a TTY".
+    """
+    cmd = [*_compose_args(app_dir, project), "exec", "-T"]
+    for k, v in (env or {}).items():
+        cmd.extend(["--env", f"{k}={v}"])
+    cmd.append(service)
+    cmd.extend(argv)
+    try:
+        proc = subprocess.run(
+            cmd,
+            cwd=app_dir,
+            check=False,
+            capture_output=True,
+            text=True,
+            timeout=timeout,
+        )
+    except subprocess.TimeoutExpired as e:
+        raise DockerError(f"compose exec {service}: timed out after {timeout}s") from e
+    if proc.returncode != 0:
+        msg = proc.stderr.strip() or proc.stdout.strip()
+        raise DockerError(f"compose exec {service} exited {proc.returncode}: {msg}")
+    return proc.stdout
+
+
+def compose_exec_script(
+    app_dir: Path,
+    project: str,
+    service: str,
+    script_path: Path,
+    *,
+    env: dict[str, str] | None = None,
+    timeout: float | None = None,
+) -> str:
+    """Run a host-side script inside the compose container via `sh -s`.
+
+    The script's bytes are streamed on stdin, so it doesn't need to be
+    copied into the image. Used by the app-dependency feature to run a
+    provider's hook scripts (e.g. "create an MQTT user for the consumer")
+    when a consumer is being installed or every time it starts.
+
+    Returns the script's stdout as text (UTF-8, replace-on-error). Raises
+    DockerError on non-zero exit or timeout, mirroring `compose_exec`.
+    """
+    body = Path(script_path).read_bytes()
+    cmd = [*_compose_args(app_dir, project), "exec", "-T"]
+    for k, v in (env or {}).items():
+        cmd.extend(["--env", f"{k}={v}"])
+    cmd.extend([service, "sh", "-s"])
+    try:
+        proc = subprocess.run(
+            cmd,
+            cwd=app_dir,
+            check=False,
+            input=body,
+            capture_output=True,
+            timeout=timeout,
+        )
+    except subprocess.TimeoutExpired as e:
+        raise DockerError(
+            f"compose exec {service}: hook {script_path.name} timed out after {timeout}s"
+        ) from e
+    if proc.returncode != 0:
+        err = (proc.stderr or proc.stdout or b"").decode("utf-8", "replace").strip()
+        raise DockerError(
+            f"compose exec {service} hook {script_path.name} exited {proc.returncode}: {err}"
+        )
+    return proc.stdout.decode("utf-8", "replace")
+
+
 def compose_image_tags(app_dir: Path, project: str) -> dict[str, str]:
     """Return {service_name: image_tag} as declared in the compose file.
 

furtka/install_runner.py

@@ -8,23 +8,31 @@ This module mirrors the exact same shape as ``furtka.catalog`` and
 ``furtka.updater`` so the UI can poll an install just like it polls a
 catalog sync or a self-update. The split is:
 
-- ``furtka.api._do_install`` runs synchronously: resolve source, copy
-  the app folder, write .env, validate path settings + placeholders.
-  Those are fast, and their failures deserve an immediate 4xx so the
-  install modal can surface them in-line.
+- ``furtka.api._do_install`` runs synchronously: resolve source(s), copy
+  the app folder(s), write .env. Those are fast, and their failures
+  deserve an immediate 4xx so the install modal can surface them in-line.
 - After that the API writes an initial state file (stage
   "pulling_image") and dispatches ``systemd-run --unit=furtka-install-
   <name>`` to run ``furtka app install-bg <name>`` in the background.
   That CLI subcommand is what calls ``run_install()`` here — it does the
   docker-facing phases and writes state transitions as it goes.
 
+If the API also wrote a plan file at ``/var/lib/furtka/install-plan.json``
+(because the target had transitive dependencies), the runner iterates
+through every app in ``to_install`` — pulling, creating volumes, firing
+``on_install`` hooks against already-up providers, then ``compose up`` —
+so providers are ready before consumers' hooks try to talk to them. The
+state file's ``target`` field carries the original user-chosen app name
+so the UI can show "Installing mosquitto (required by zigbee2mqtt)".
+
 State file schema (``/var/lib/furtka/install-state.json``):
 
     {
       "stage": "pulling_image" | "creating_volumes"
-             | "starting_container" | "done" | "error",
+             | "running_hooks" | "starting_container" | "done" | "error",
       "updated_at": "2026-04-21T17:30:45+0200",
-      "app": "jellyfin",
+      "app": "mosquitto",            // app currently being processed
+      "target": "zigbee2mqtt",       // original target (== app for single-app installs)
       "version": "1.0.0",            // added at "done"
       "error": "details..."          // added at "error"
     }
@@ -40,16 +48,21 @@ from __future__ import annotations
 import fcntl
 import json
 import os
+import re
 import time
 from pathlib import Path
 
-from furtka import dockerops
-from furtka.manifest import load_manifest
+from furtka import deps, dockerops, installer
+from furtka.manifest import SETTING_NAME_RE, Manifest, load_manifest
 from furtka.paths import apps_dir
 
 _INSTALL_STATE = Path(os.environ.get("FURTKA_INSTALL_STATE", "/var/lib/furtka/install-state.json"))
+_INSTALL_PLAN = Path(os.environ.get("FURTKA_INSTALL_PLAN", "/var/lib/furtka/install-plan.json"))
 _LOCK_PATH = Path(os.environ.get("FURTKA_INSTALL_LOCK", "/run/furtka/install.lock"))
 
+_ON_INSTALL_TIMEOUT_SECONDS = 60.0
+_FURTKA_JSON_RE = re.compile(r"^FURTKA_JSON:\s*(.*)$")
+
 
 class InstallRunnerError(RuntimeError):
     """Any failure in the background install flow that should surface to the caller."""
@@ -59,6 +72,10 @@ def state_path() -> Path:
     return _INSTALL_STATE
 
 
+def plan_path() -> Path:
+    return _INSTALL_PLAN
+
+
 def lock_path() -> Path:
     return _LOCK_PATH
 
@@ -79,6 +96,35 @@ def read_state() -> dict:
         return {}
 
 
+def _read_plan(target: str) -> dict:
+    """Load the install plan if the API wrote one; otherwise the single-app fallback.
+
+    The plan file is consumed once — removed after read so a stale plan from
+    a previous install can't accidentally steer this run. If the file is
+    missing/unparseable we synthesize a one-element plan from the target arg
+    so the old single-app behaviour still works (CLI invocations, smoke tests).
+    """
+    try:
+        raw = plan_path().read_text()
+    except (FileNotFoundError, OSError):
+        return {"target": target, "to_install": [target]}
+    try:
+        data = json.loads(raw)
+    except json.JSONDecodeError:
+        return {"target": target, "to_install": [target]}
+    finally:
+        try:
+            plan_path().unlink()
+        except OSError:
+            pass
+    if not isinstance(data, dict):
+        return {"target": target, "to_install": [target]}
+    return {
+        "target": data.get("target", target),
+        "to_install": data.get("to_install") or [target],
+    }
+
+
 def acquire_lock():
     path = lock_path()
     path.parent.mkdir(parents=True, exist_ok=True)
@@ -91,31 +137,163 @@ def acquire_lock():
     return fh
 
 
+def _parse_hook_output(text: str) -> dict[str, str]:
+    """Extract KEY=VALUE pairs from hook stdout plus any FURTKA_JSON: {...} line.
+
+    KEY=VALUE keys must match the manifest's SETTING_NAME regex (UPPER_SNAKE_CASE)
+    so a misbehaving hook can't inject e.g. `PATH=` and clobber the container's
+    runtime environment.
+
+    The FURTKA_JSON sentinel is opt-in for hooks that need to return structured
+    data later (e.g. a list of generated certificates). Only string values are
+    accepted; non-string values raise so a hook can't smuggle non-env content
+    into the .env file. JSON values overlay KEY=VALUE values.
+    """
+    out: dict[str, str] = {}
+
+    # First pass: skip FURTKA_JSON lines for KEY=VALUE extraction.
+    kv_lines = [line for line in text.splitlines() if not _FURTKA_JSON_RE.match(line.strip())]
+    kv = installer.parse_env_text("\n".join(kv_lines))
+    for key, value in kv.items():
+        if not SETTING_NAME_RE.match(key):
+            raise InstallRunnerError(
+                f"hook returned invalid env-var name {key!r} "
+                "(must be UPPER_SNAKE_CASE, e.g. MQTT_USER)"
+            )
+        out[key] = value
+
+    # Second pass: pick up FURTKA_JSON sentinels.
+    for raw in text.splitlines():
+        m = _FURTKA_JSON_RE.match(raw.strip())
+        if not m:
+            continue
+        try:
+            payload = json.loads(m.group(1))
+        except json.JSONDecodeError as e:
+            raise InstallRunnerError(f"hook returned invalid FURTKA_JSON payload: {e}") from e
+        if not isinstance(payload, dict):
+            raise InstallRunnerError(
+                "hook FURTKA_JSON payload must be an object of KEY=VALUE strings"
+            )
+        for key, value in payload.items():
+            if not isinstance(key, str) or not SETTING_NAME_RE.match(key):
+                raise InstallRunnerError(f"hook FURTKA_JSON key {key!r} must be UPPER_SNAKE_CASE")
+            if not isinstance(value, str):
+                raise InstallRunnerError(f"hook FURTKA_JSON value for {key!r} must be a string")
+            out[key] = value
+    return out
+
+
+def _merge_hook_output_into_env(env_path: Path, hook_stdout: str) -> None:
+    """Overlay hook-returned keys onto an app's `.env`. Hook wins on conflict.
+
+    Re-runs the placeholder-secret check so a hook returning literal "changeme"
+    is refused the same way an unedited .env.example is. Re-chmods to 0600 so
+    even an interrupted run leaves the file root-only.
+    """
+    overlay = _parse_hook_output(hook_stdout)
+    if not overlay:
+        return
+    existing = installer.read_env_values(env_path)
+    merged: dict[str, str] = {}
+    merged.update(existing)
+    merged.update(overlay)  # hook wins
+    installer.write_env(env_path, merged)
+    env_path.chmod(0o600)
+    bad = installer._placeholder_keys(env_path)
+    if bad:
+        raise InstallRunnerError(
+            f"{env_path}: hook returned placeholder values for {', '.join(bad)}"
+        )
+
+
+def _fire_install_hooks(consumer: Manifest, consumer_dir: Path) -> None:
+    """Run each `on_install` hook against the corresponding provider's container.
+
+    The provider must already be running (its `compose up` ran earlier in the
+    same plan). Hook stdout is parsed via `_parse_hook_output` and merged into
+    the consumer's `.env` before its own `compose up` fires.
+    """
+    for req in consumer.requires:
+        if not req.on_install:
+            continue
+        provider_dir = apps_dir() / req.app
+        provider_manifest_path = provider_dir / "manifest.json"
+        if not provider_manifest_path.is_file():
+            raise InstallRunnerError(f"{consumer.name}: required app {req.app!r} is not installed")
+        # Validate provider manifest loads (matches the contract the rest of
+        # the system relies on — never trust a provider folder with a busted
+        # manifest).
+        load_manifest(provider_manifest_path, expected_name=req.app)
+        hook_abs = provider_dir / req.on_install
+        if not hook_abs.is_file():
+            raise InstallRunnerError(
+                f"{consumer.name}: on_install hook {req.on_install!r} missing in provider {req.app}"
+            )
+        service = deps.provider_exec_service(provider_dir, req.app)
+        stdout = dockerops.compose_exec_script(
+            provider_dir,
+            req.app,
+            service,
+            hook_abs,
+            env={
+                "FURTKA_CONSUMER_APP": consumer.name,
+                "FURTKA_CONSUMER_VERSION": consumer.version,
+            },
+            timeout=_ON_INSTALL_TIMEOUT_SECONDS,
+        )
+        _merge_hook_output_into_env(consumer_dir / ".env", stdout)
+
+
 def run_install(name: str) -> None:
-    """Docker-facing phases of the install: pull → volumes → compose up.
+    """Docker-facing phases of the install: pull → volumes → hooks → compose up.
 
     Called by the ``furtka app install-bg <name>`` CLI subcommand from the
     systemd-run spawned by the API. Assumes the API has already run
-    ``installer.install_from()``, so the app folder, .env, and manifest
-    are on disk at ``apps_dir() / <name>``.
+    ``installer.install_from()`` for every app in the plan, so each app folder,
+    `.env`, and manifest are on disk under ``apps_dir() / <name>``.
 
-    Every phase transition is written to the state file for the UI to
-    poll. On exception the state flips to ``"error"`` with the message,
-    then the exception is re-raised so the CLI exits non-zero and
-    journald has a traceback.
+    If ``/var/lib/furtka/install-plan.json`` exists, every app in its
+    ``to_install`` is processed in order (providers before consumers). Each
+    provider is fully up before the consumer's ``on_install`` hooks fire,
+    so a hook can ``mosquitto_passwd``/`createuser` against a live broker/DB.
+
+    Every phase transition is written to the state file for the UI to poll.
+    On exception the state flips to ``"error"`` with the message, then the
+    exception is re-raised so the CLI exits non-zero and journald gets a
+    traceback. Per-app failure aborts the rest of the plan: a half-installed
+    consumer whose provider is fine is recoverable by retrying.
     """
     with acquire_lock():
-        target = apps_dir() / name
-        manifest = load_manifest(target / "manifest.json", expected_name=name)
+        plan = _read_plan(name)
+        target = plan["target"]
+        to_install = list(plan["to_install"])
         try:
-            write_state("pulling_image", app=name)
-            dockerops.compose_pull(target, name)
-            write_state("creating_volumes", app=name)
-            for short in manifest.volumes:
-                dockerops.ensure_volume(manifest.volume_name(short))
-            write_state("starting_container", app=name)
-            dockerops.compose_up(target, name)
-            write_state("done", app=name, version=manifest.version)
+            last_manifest = None
+            for app_name in to_install:
+                target_dir = apps_dir() / app_name
+                m = load_manifest(target_dir / "manifest.json", expected_name=app_name)
+                last_manifest = m
+                write_state("pulling_image", app=app_name, target=target)
+                dockerops.compose_pull(target_dir, app_name)
+                write_state("creating_volumes", app=app_name, target=target)
+                for short in m.volumes:
+                    dockerops.ensure_volume(m.volume_name(short))
+                if m.requires:
+                    write_state("running_hooks", app=app_name, target=target)
+                    _fire_install_hooks(m, target_dir)
+                write_state("starting_container", app=app_name, target=target)
+                dockerops.compose_up(target_dir, app_name)
+            # Terminal state carries the original target's name + version so
+            # the UI's poll loop ("is install of <target> done yet?") still
+            # works unchanged.
+            if last_manifest is not None and last_manifest.name == target:
+                write_state("done", app=target, target=target, version=last_manifest.version)
+            else:
+                # Fallback: target wasn't last in the plan (shouldn't happen for
+                # a well-formed plan, but don't crash on the terminal write).
+                write_state("done", app=target, target=target)
         except Exception as e:
-            write_state("error", app=name, error=str(e))
+            current = read_state().get("app", target)
+            write_state("error", app=current, target=target, error=str(e))
             raise

furtka/installer.py

@@ -171,13 +171,22 @@ def install_from(src: Path, settings: dict[str, str] | None = None) -> Path:
     target.mkdir(parents=True, exist_ok=True)
 
     for item in src.iterdir():
+        dest = target / item.name
+        # Subdirectories (e.g. scripts/ holding a provider's on_install/on_start
+        # dependency hooks) must come along too — copy the whole tree, replacing
+        # any stale copy from a previous install so removed files don't linger.
+        if item.is_dir():
+            if dest.exists():
+                shutil.rmtree(dest)
+            shutil.copytree(item, dest)
+            continue
         if not item.is_file():
             continue
         # Never overwrite an existing user .env — either settings-driven write
         # or previous manual edit has authority.
         if item.name == ".env" and (target / ".env").exists():
             continue
-        shutil.copy2(item, target / item.name)
+        shutil.copy2(item, dest)
 
     env = target / ".env"
     env_example = target / ".env.example"
@@ -233,10 +242,15 @@ def install_from(src: Path, settings: dict[str, str] | None = None) -> Path:
     return target
 
 
-def _read_env(env_path: Path) -> dict[str, str]:
-    """Parse a simple KEY=VALUE .env into a dict. Unquotes quoted values."""
+def parse_env_text(text: str) -> dict[str, str]:
+    """Parse KEY=VALUE lines from a string into a dict. Unquotes quoted values.
+
+    Reusable by anything that needs the same lenient .env parsing logic
+    without reading a file — e.g. hook script stdout merged into an app's
+    .env during install (see install_runner._fire_install_hooks).
+    """
     out: dict[str, str] = {}
-    for raw in env_path.read_text().splitlines():
+    for raw in text.splitlines():
         line = raw.strip()
         if not line or line.startswith("#") or "=" not in line:
             continue
@@ -250,6 +264,11 @@ def _read_env(env_path: Path) -> dict[str, str]:
     return out
 
 
+def _read_env(env_path: Path) -> dict[str, str]:
+    """Parse a simple KEY=VALUE .env into a dict. Unquotes quoted values."""
+    return parse_env_text(env_path.read_text())
+
+
 def read_env_values(env_path: Path) -> dict[str, str]:
     """Public wrapper — returns {} if the file doesn't exist."""
     if not env_path.exists():
@@ -307,6 +326,28 @@ def update_env(name: str, settings: dict[str, str]) -> Path:
     return target
 
 
+def install_plan(plan, settings_target: dict[str, str] | None = None) -> list[Path]:
+    """Run the synchronous install phase for every app in `plan.to_install`.
+
+    Each name is resolved via `resolve_source()` and copied via `install_from`
+    in plan order, so providers land before consumers. Only the target app
+    receives user-supplied settings — transitive providers install from their
+    catalog/bundled `.env.example` and rely on the placeholder-secret check
+    to refuse if anyone shipped a "changeme" default.
+
+    No rollback on partial failure. Re-running install is the recovery path;
+    stopping providers a user may already rely on for other apps is more
+    destructive than a partial state. Returns the list of target folders in
+    install order.
+    """
+    targets: list[Path] = []
+    for name in plan.to_install:
+        src = resolve_source(name)
+        settings = settings_target if name == plan.target else None
+        targets.append(install_from(src, settings=settings))
+    return targets
+
+
 def remove(name: str) -> Path:
     """Delete /var/lib/furtka/apps/<name>/. Volumes are NOT touched.
 

furtka/manifest.py

@@ -15,6 +15,7 @@ REQUIRED_FIELDS = (
 
 VALID_SETTING_TYPES = frozenset({"text", "password", "number", "path"})
 SETTING_NAME_RE = re.compile(r"^[A-Z_][A-Z0-9_]*$")
+APP_NAME_RE = re.compile(r"^[a-z][a-z0-9_-]*$")
 
 
 class ManifestError(Exception):
@@ -31,6 +32,18 @@ class Setting:
     default: str | None
 
 
+@dataclass(frozen=True)
+class Requirement:
+    app: str  # name of the required app — must resolve in installed/catalog/bundled
+    # Hook paths are relative to the PROVIDER's app folder (not the consumer's).
+    # Resolved at hook-fire time, not manifest-load time — the provider may not
+    # be installed yet when this manifest is parsed.
+    # on_install: script run via `docker compose exec` on the provider during install.
+    on_install: str | None
+    # on_start: script run on every boot before the consumer starts (must be idempotent).
+    on_start: str | None
+
+
 @dataclass(frozen=True)
 class Manifest:
     name: str
@@ -48,6 +61,7 @@ class Manifest:
     # furtka.local, a raw IP, a future reverse-proxy hostname. Apps with
     # no frontend (CLI-only, background workers) leave this empty.
     open_url: str = ""
+    requires: tuple[Requirement, ...] = field(default_factory=tuple)
 
     def volume_name(self, short: str) -> str:
         # Namespace volume names so two apps can each declare e.g. "data"
@@ -98,6 +112,49 @@ def _parse_settings(raw: object, manifest_path: Path) -> tuple[Setting, ...]:
     return tuple(out)
 
 
+def _validate_hook_path(value: object, manifest_path: Path, where: str) -> str | None:
+    if value is None:
+        return None
+    if not isinstance(value, str) or not value:
+        raise ManifestError(f"{manifest_path}: {where} must be a non-empty string if set")
+    if value.startswith("/"):
+        raise ManifestError(f"{manifest_path}: {where} must be relative (no leading /)")
+    parts = value.replace("\\", "/").split("/")
+    if any(p == ".." for p in parts):
+        raise ManifestError(f"{manifest_path}: {where} must not contain '..'")
+    return value
+
+
+def _parse_requires(raw: object, manifest_path: Path, self_name: str) -> tuple[Requirement, ...]:
+    if raw is None:
+        return ()
+    if not isinstance(raw, list):
+        raise ManifestError(f"{manifest_path}: requires must be a list")
+    out: list[Requirement] = []
+    seen: set[str] = set()
+    for i, item in enumerate(raw):
+        if not isinstance(item, dict):
+            raise ManifestError(f"{manifest_path}: requires[{i}] must be an object")
+        app = item.get("app")
+        if not isinstance(app, str) or not app or not APP_NAME_RE.match(app):
+            raise ManifestError(
+                f"{manifest_path}: requires[{i}].app must be a non-empty lowercase app name"
+            )
+        if app == self_name:
+            raise ManifestError(f"{manifest_path}: requires[{i}].app {app!r} is a self-reference")
+        if app in seen:
+            raise ManifestError(f"{manifest_path}: requires has duplicate app {app!r}")
+        seen.add(app)
+        on_install = _validate_hook_path(
+            item.get("on_install"), manifest_path, f"requires[{app}].on_install"
+        )
+        on_start = _validate_hook_path(
+            item.get("on_start"), manifest_path, f"requires[{app}].on_start"
+        )
+        out.append(Requirement(app=app, on_install=on_install, on_start=on_start))
+    return tuple(out)
+
+
 def load_manifest(path: Path, expected_name: str | None = None) -> Manifest:
     """Parse and validate a manifest.json.
 
@@ -132,6 +189,7 @@ def load_manifest(path: Path, expected_name: str | None = None) -> Manifest:
         raise ManifestError(f"{path}: ports must be a list of integers")
 
     settings = _parse_settings(raw.get("settings"), path)
+    requires = _parse_requires(raw.get("requires"), path, name)
 
     open_url_raw = raw.get("open_url", "")
     if not isinstance(open_url_raw, str):
@@ -148,4 +206,5 @@ def load_manifest(path: Path, expected_name: str | None = None) -> Manifest:
         description_long=str(raw.get("description_long", "")),
         settings=settings,
         open_url=open_url_raw,
+        requires=requires,
     )

furtka/reconciler.py

@@ -1,13 +1,21 @@
 from dataclasses import dataclass
 from pathlib import Path
 
-from furtka import dockerops
+from furtka import deps, dockerops, installer
+from furtka.manifest import SETTING_NAME_RE, ManifestError, load_manifest
 from furtka.scanner import scan
 
+_ON_START_TIMEOUT_SECONDS = 30.0
+
+# Consumer .env values are exported into an on_start hook's environment under
+# this prefix. Namespaced so a consumer setting named PATH/HOME/etc. can't
+# clobber the provider container's own environment when the hook runs.
+_CONSUMER_ENV_PREFIX = "FURTKA_CONSUMER_ENV_"
+
 
 @dataclass(frozen=True)
 class Action:
-    kind: str  # "ensure_volume" | "compose_up" | "skip"
+    kind: str  # "ensure_volume" | "compose_up" | "hook" | "skip" | "error"
     target: str
     detail: str = ""
 
@@ -20,13 +28,20 @@ class Action:
 def reconcile(apps_root: Path, dry_run: bool = False) -> list[Action]:
     """Walk the apps tree and bring docker into the desired state.
 
+    Apps are visited in dependency order — providers before consumers — so a
+    consumer's `on_start` hook runs against an already-up provider. Within a
+    tier, order stays alphabetical for deterministic boot logs. Apps with
+    unresolvable `requires` (missing provider, broken manifest cycle) are
+    visited last; reconcile's per-app isolation still kicks in if they fail.
+
     Failures during one app's reconcile (Docker errors, missing binary, …) are
     captured as Action(kind='error', …) and do NOT abort the whole sweep — the
     other apps still get reconciled. Callers inspect the returned actions to
     decide overall success.
     """
     actions: list[Action] = []
-    for result in scan(apps_root):
+    results = scan(apps_root)
+    for result in deps.installed_topo_order(results):
         if not result.ok:
             actions.append(Action("skip", result.path.name, result.error or ""))
             continue
@@ -37,6 +52,31 @@ def reconcile(apps_root: Path, dry_run: bool = False) -> list[Action]:
                 actions.append(Action("ensure_volume", full))
                 if not dry_run:
                     dockerops.ensure_volume(full)
+            hook_failed = False
+            for req in m.requires:
+                if not req.on_start:
+                    continue
+                hook_label = f"{m.name}:{req.app}:on_start"
+                actions.append(Action("hook", hook_label, req.on_start))
+                if dry_run:
+                    continue
+                try:
+                    _fire_on_start_hook(m, req, apps_root)
+                except (
+                    dockerops.DockerError,
+                    FileNotFoundError,
+                    OSError,
+                    ManifestError,
+                ) as e:
+                    actions.append(Action("error", m.name, f"on_start({req.app}): {e}"))
+                    hook_failed = True
+                    break
+            if hook_failed:
+                # Skip compose_up: a consumer whose provider's contract didn't
+                # get re-established (e.g. missing MQTT user) starting up
+                # blindly is worse than not starting it. The provider stays up
+                # and other apps in the sweep keep going.
+                continue
             actions.append(Action("compose_up", m.name))
             if not dry_run:
                 dockerops.compose_up(result.path, m.name)
@@ -48,5 +88,56 @@ def reconcile(apps_root: Path, dry_run: bool = False) -> list[Action]:
     return actions
 
 
+def _fire_on_start_hook(consumer, req, apps_root: Path) -> None:
+    """Run a single `on_start` hook against the provider's running container.
+
+    Reconciler-local helper — kept narrow on purpose so reconcile's main loop
+    stays scannable. Errors propagate; the caller decorates with the per-app
+    Action("error", ...) and skips compose_up for this consumer.
+    """
+    provider_dir = apps_root / req.app
+    provider_manifest_path = provider_dir / "manifest.json"
+    if not provider_manifest_path.is_file():
+        raise FileNotFoundError(f"required app {req.app!r} is not installed")
+    # Validate provider manifest loads (otherwise scanner would have skipped
+    # it and we'd still try to exec — fail loud here instead).
+    load_manifest(provider_manifest_path, expected_name=req.app)
+    hook_abs = provider_dir / req.on_start
+    if not hook_abs.is_file():
+        raise FileNotFoundError(f"on_start hook {req.on_start!r} missing in provider {req.app}")
+    service = deps.provider_exec_service(provider_dir, req.app)
+    dockerops.compose_exec_script(
+        provider_dir,
+        req.app,
+        service,
+        hook_abs,
+        env=_on_start_hook_env(consumer, apps_root),
+        timeout=_ON_START_TIMEOUT_SECONDS,
+    )
+
+
+def _on_start_hook_env(consumer, apps_root: Path) -> dict[str, str]:
+    """Build the environment handed to an on_start hook.
+
+    Beyond the consumer's name/version, this injects the consumer's stored
+    `.env` values (namespaced under `FURTKA_CONSUMER_ENV_`) so the hook can
+    re-establish provider-side state *idempotently* — e.g. re-create an MQTT
+    account with the SAME password the consumer already holds. The reconciler
+    does not merge an on_start hook's stdout back into the consumer's `.env`
+    (unlike on_install): on_start reads consumer state, it doesn't mutate it.
+    Only UPPER_SNAKE_CASE keys are injected so a hand-edited `.env` can't
+    produce a malformed `docker compose exec --env` argument.
+    """
+    env = {
+        "FURTKA_CONSUMER_APP": consumer.name,
+        "FURTKA_CONSUMER_VERSION": consumer.version,
+    }
+    consumer_env = installer.read_env_values(apps_root / consumer.name / ".env")
+    for key, value in consumer_env.items():
+        if SETTING_NAME_RE.match(key):
+            env[f"{_CONSUMER_ENV_PREFIX}{key}"] = value
+    return env
+
+
 def has_errors(actions: list[Action]) -> bool:
     return any(a.kind == "error" for a in actions)

furtka/updater.py

@@ -226,12 +226,17 @@ def _link_new_units(unit_dir: Path) -> list[str]:
     """`systemctl link` any unit file in unit_dir that isn't already symlinked
     into /etc/systemd/system/. Returns the list of newly-linked unit names.
 
-    Newly-linked `.timer` units are additionally `systemctl enable`d so that
-    a self-update introducing a timer (e.g. 26.5 → 26.6 adding
-    furtka-catalog-sync.timer) activates it automatically — the installer's
-    enable list only applies to fresh installs. A linked-but-disabled timer
-    never fires on its own, so without this step catalog sync would never
-    happen on upgraded boxes.
+    Newly-linked `.timer` units are additionally `systemctl enable`d *and
+    started* so that a self-update introducing a timer (e.g. 26.5 → 26.6
+    adding furtka-catalog-sync.timer, 26.19 → 26.20 adding
+    furtka-welcome.timer) activates it right away — the installer's enable
+    list only applies to fresh installs, and `enable` alone only takes
+    effect at the next boot (the bench sat on a dead welcome timer after the
+    26.20 update).
+
+    Units are linked through the `/opt/furtka/current` symlink, not the
+    versioned directory that `unit_dir` scans, so the link keeps following
+    later updates and rollbacks the same way the installer-created links do.
     """
     if not unit_dir.is_dir():
         return []
@@ -242,9 +247,10 @@ def _link_new_units(unit_dir: Path) -> list[str]:
         target = _SYSTEMD_DIR / unit_file.name
         if target.exists() or target.is_symlink():
             continue
-        _run(["systemctl", "link", str(unit_file)])
+        _run(["systemctl", "link", str(current_symlink() / "assets" / "systemd" / unit_file.name)])
         if unit_file.suffix == ".timer":
             _run(["systemctl", "enable", unit_file.name])
+            _run(["systemctl", "start", unit_file.name])
         linked.append(unit_file.name)
     return linked
 

iso/README.md

@@ -27,13 +27,15 @@ The build starts from Arch's stock `releng` profile (the same one used to build
 | `overlay/airootfs/opt/furtka/`               | Directory where `webinstaller/` is copied at build time                          |
 | `overlay/airootfs/etc/hostname`              | Live-ISO hostname (`proksi`) so mDNS advertises the installer as `proksi.local`  |
 | `overlay/airootfs/etc/issue`                 | Welcome banner on the TTY pointing users at `http://proksi.local:5000`           |
-| `overlay/airootfs/usr/local/bin/furtka-update-issue` | Rewrites `/etc/issue` at runtime so the banner also shows the DHCP-assigned IP as a fallback URL |
-| `overlay/airootfs/etc/systemd/system/`       | `furtka-webinstaller.service` (Flask on :5000) + `furtka-issue.service` (runs the banner-updater on network-online), each symlinked into `multi-user.target.wants/` to auto-start on boot |
+| `overlay/airootfs/usr/local/bin/furtka-update-issue` | Rewrites `/etc/issue` at runtime so the banner always carries a fallback line: the DHCP-assigned IP(s), or a "no IP yet — check cable / DHCP" hint until one arrives. Only touches the file (and `agetty --reload`s) when the text changed |
+| `overlay/airootfs/etc/systemd/system/`       | `furtka-webinstaller.service` (Flask on :5000) + `furtka-issue.service` (banner-updater, first run at boot) in `multi-user.target.wants/`, and `furtka-issue.timer` (re-runs the updater every 5 s) in `timers.target.wants/` |
 
 The systemd service runs `flask --app app run --host 0.0.0.0 --port 5000` under `/opt/furtka`. The `0.0.0.0` binding is important — the Flask default is localhost-only, which wouldn't be reachable from another machine on the LAN.
 
 mDNS is wired: `avahi-daemon` + `nss-mdns` come from `packages.extra`, the live ISO's hostname is `proksi`, and as soon as `systemd-networkd-wait-online` fires the installer is reachable at `http://proksi.local:5000`. The raw IP still shows on the console for fallback — some Windows clients need the Bonjour service for `.local` to resolve at all.
 
+`build.sh` also deletes releng's `getty@tty1.service.d/autologin.conf`. With root auto-logged-in, tty1 belongs to a shell and `agetty --reload` can't redraw the banner, so the IP line was a snapshot of whatever DHCP had done by the time getty started. Without autologin tty1 sits at the login prompt showing the live banner; for a shell type `root` + Enter (releng's root has no password) — the banner says so.
+
 ## Test flow
 
 1. Build: `./iso/build.sh`
@@ -49,6 +51,27 @@ mDNS is wired: `avahi-daemon` + `nss-mdns` come from `packages.extra`, the live
 5. Find its IP in Proxmox's VM summary (or your router's DHCP table)
 6. Open `http://<vm-ip>:5000` — the existing 3-screen wizard should be there
 
+## Real hardware (what differs from the VM flow)
+
+Learned on the first bare-metal run, see [docs/hardware-test-2026-08.md](../docs/hardware-test-2026-08.md):
+
+- **BIOS boxes work.** The hybrid ISO boots via syslinux on legacy firmware
+  (you'll see the stock Arch splash — only the menu labels are branded), and
+  the installer detects the missing `/sys/firmware/efi` and picks GRUB + MBR.
+- **Pull the USB stick before "restart now".** Most BIOSes boot USB before
+  the disk; the done page says so above the button since 26.20-alpha.
+- **Disks with a previous OS are fine since 26.20-alpha.** The live ISO
+  auto-activates old LVM/RAID/swap; `webinstaller/diskprep.py` releases the
+  disk before archinstall partitions it. On 26.19 and earlier you'd hit
+  `unable to inform the kernel of the change … in use` at 12 % — clear it
+  from the tty1 root shell with `dmsetup remove <node>` for every dm node
+  shown by `lsblk`, then `wipefs -a /dev/sdX` and retry.
+- **Slow NICs.** The console banner's IP fallback line is timer-driven
+  since 26.20-alpha; on 26.19 it only appeared if DHCP beat getty.
+- **Shell on the live ISO**: since 26.20-alpha tty1 stays at the login
+  prompt (banner refreshes live); log in as `root`, no password. sshd runs;
+  set a root password with `passwd` to reach it over the network.
+
 ## What you see after install + reboot
 
 Once `archinstall` finishes and you click **Reboot now**, the VM comes up into the installed system. No more port `:5000` — the wizard ISO is gone. Instead:

iso/build.sh

@@ -45,6 +45,15 @@ cat "$SCRIPT_DIR/overlay/profiledef.sh" >> "$PROFILE_WORK/profiledef.sh"
 
 cp -a "$SCRIPT_DIR/overlay/airootfs/." "$PROFILE_WORK/airootfs/"
 
+# releng auto-logs root in on tty1. That turns our /etc/issue banner into a
+# one-shot snapshot: once agetty has handed tty1 to a shell, `agetty --reload`
+# from furtka-update-issue has nothing left to redraw, so the IP fallback only
+# shows if DHCP happened to beat getty. Drop the drop-in: tty1 stays at the
+# login prompt with a live-refreshed banner (furtka-issue.timer), and a shell
+# is one `root` + Enter away (releng's root has no password) — the banner says
+# so.
+rm -rf "$PROFILE_WORK/airootfs/etc/systemd/system/getty@tty1.service.d"
+
 echo "==> Rebranding boot menu (GRUB + syslinux + systemd-boot)"
 # releng ships menu entries labelled "Arch Linux install medium" across three
 # bootloader configs (BIOS syslinux, GRUB, systemd-boot for UEFI). Rewrite to

iso/overlay/airootfs/etc/issue

@@ -2,5 +2,6 @@
   Furtka Live Installer starting…
 
   Once ready, open http://proksi.local:5000 on another device
-  on your network. The exact URL will appear below.
+  on your network. The exact URL (and an IP fallback) will
+  appear here in a few seconds.
 

iso/overlay/airootfs/etc/systemd/system/furtka-issue.service

@@ -1,12 +1,12 @@
 [Unit]
 Description=Write Furtka /etc/issue with current IP for the console welcome
-After=network-online.target
-Wants=network-online.target
+# No network-online dependency on purpose: the first run should paint the
+# banner (with a "no IP yet" fallback) as early as possible; the timer
+# re-runs it until an address shows up.
 
 [Service]
 Type=oneshot
 ExecStart=/usr/local/bin/furtka-update-issue
-RemainAfterExit=yes
 
 [Install]
 WantedBy=multi-user.target

iso/overlay/airootfs/etc/systemd/system/furtka-issue.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Keep the Furtka console welcome (IP fallback) up to date
+
+[Timer]
+OnBootSec=3s
+OnUnitActiveSec=5s
+AccuracySec=1s
+
+[Install]
+WantedBy=timers.target

iso/overlay/airootfs/etc/systemd/system/timers.target.wants/furtka-issue.timer

@@ -0,0 +1 @@
+../furtka-issue.timer

iso/overlay/airootfs/usr/local/bin/furtka-update-issue

@@ -2,22 +2,40 @@
 # Regenerates /etc/issue so the live-ISO console tells the user which URL
 # to open in their browser. Shows proksi.local (via avahi/mDNS) as the
 # preferred URL and the raw IP as a fallback for networks where mDNS
-# doesn't work. Reload at the end nudges agetty to redraw.
-set -e
+# doesn't work.
+#
+# Runs at boot and then every few seconds from furtka-issue.timer, so the
+# fallback line is *always* on screen: with the address once DHCP has
+# handed one out, or with a "no IP yet" hint before that / when the cable
+# is unplugged. Only rewrites + nudges agetty when the text actually
+# changed, so the login prompt doesn't flicker on every tick.
+set -u
 
-ip=$(ip -4 -o addr show scope global 2>/dev/null | awk '{print $4}' | cut -d/ -f1 | head -1)
+issue=/etc/issue
 
-{
+mapfile -t ips < <(ip -4 -o addr show scope global 2>/dev/null | awk '{print $4}' | cut -d/ -f1)
+
+new=$(
     echo
     echo "  Open Furtka in a browser on another device on your network:"
     echo
     echo "      http://proksi.local:5000   (easy — try this first)"
-    if [ -n "$ip" ]; then
-        echo "      http://${ip}:5000   (fallback if the first doesn't work)"
+    if ((${#ips[@]})); then
+        for ip in "${ips[@]}"; do
+            echo "      http://${ip}:5000   (fallback if the first doesn't work)"
+        done
+    else
+        echo "      (fallback: no IP address yet — waiting for the network."
+        echo "       Check the cable / DHCP. This line updates by itself.)"
     fi
     echo
     echo "  Then follow the wizard to install Furtka on this machine."
     echo
-} > /etc/issue
+    echo "  Need a shell? Log in as root (no password)."
+    echo
+)
 
-agetty --reload 2>/dev/null || true
+if [ "$new" != "$(cat "$issue" 2>/dev/null)" ]; then
+    printf '%s\n' "$new" > "$issue"
+    agetty --reload 2>/dev/null || true
+fi

ops/nginx/furtka.org.conf

@@ -29,6 +29,22 @@ server {
         try_files $uri $uri/ $uri.html =404;
     }
 
+    # Poll counter (ops/poll/pollsvc.py) — cookie-free, rate-limited.
+    location /api/poll/ {
+        # Public traffic arrives from the edge proxy via 192.168.178.164.
+        # Only that hop is trusted when unwinding X-Forwarded-For, so a
+        # client-supplied X-Forwarded-For cannot forge a fresh "device".
+        set_real_ip_from 192.168.178.164;
+        real_ip_header X-Forwarded-For;
+        real_ip_recursive on;
+
+        limit_req zone=poll burst=10 nodelay;
+        proxy_pass http://127.0.0.1:8090/;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header User-Agent $http_user_agent;
+        proxy_read_timeout 5s;
+    }
+
     location = /favicon.svg {
         access_log off;
         log_not_found off;

ops/nginx/poll-ratelimit.conf

@@ -0,0 +1,2 @@
+# Rate limit for the poll API (http context; included from conf.d).
+limit_req_zone $binary_remote_addr zone=poll:1m rate=30r/m;

ops/nginx/setup-vm.sh

@@ -16,6 +16,7 @@ install -d -o "$OWNER" -g "$OWNER" -m 0755 "$WEBROOT"
 install -d -o "$OWNER" -g "$OWNER" -m 0755 "$SRCROOT"
 
 cp "$(dirname "$0")/furtka.org.conf" "$SITE_CONF"
+cp "$(dirname "$0")/poll-ratelimit.conf" /etc/nginx/conf.d/poll-ratelimit.conf
 ln -sfn "$SITE_CONF" "$SITE_LINK"
 
 # Drop the Ubuntu default site so it doesn't shadow us on :80.

ops/poll/furtka-poll.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=furtka.org poll counter
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/python3 /opt/furtka-poll/pollsvc.py
+DynamicUser=yes
+StateDirectory=furtka-poll
+Restart=on-failure
+RestartSec=3
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=yes
+PrivateTmp=yes
+
+[Install]
+WantedBy=multi-user.target

ops/poll/pollsvc.py

@@ -0,0 +1,172 @@
+#!/usr/bin/env python3
+"""Tiny cookie-free poll counter for furtka.org.
+
+Runs behind nginx on 127.0.0.1:8090. One SQLite file, no dependencies
+beyond the standard library.
+
+    GET  /<poll>          -> {"poll": "logo", "counts": {"m": 3, "r": 5}, "total": 8}
+    POST /<poll>          -> body {"choice": "m"}; answers like GET plus "yours"
+
+A device is identified by a salted SHA-256 of client IP (as resolved by
+nginx from the trusted edge proxy) + User-Agent, so nobody needs a cookie
+and the raw address is never stored. Voting again
+from the same device changes the vote instead of adding one.
+"""
+
+import hashlib
+import json
+import logging
+import os
+import sqlite3
+import sys
+import threading
+from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+
+POLLS = {
+    "logo": ("m", "r"),
+}
+STATE_DIR = os.environ.get("STATE_DIRECTORY", "/var/lib/furtka-poll")
+DB_PATH = os.path.join(STATE_DIR, "votes.db")
+SALT_PATH = os.path.join(STATE_DIR, "salt")
+LISTEN = os.environ.get("POLL_LISTEN", "127.0.0.1")
+PORT = int(os.environ.get("POLL_PORT", "8090"))
+MAX_BODY = 512
+
+log = logging.getLogger("pollsvc")
+_lock = threading.Lock()
+
+
+def _salt() -> bytes:
+    try:
+        with open(SALT_PATH, "rb") as f:
+            s = f.read()
+            if len(s) >= 16:
+                return s
+    except FileNotFoundError:
+        pass
+    s = os.urandom(32)
+    with open(SALT_PATH, "wb") as f:
+        f.write(s)
+    os.chmod(SALT_PATH, 0o600)
+    return s
+
+
+def _db() -> sqlite3.Connection:
+    conn = sqlite3.connect(DB_PATH, check_same_thread=False)
+    conn.execute(
+        "CREATE TABLE IF NOT EXISTS votes ("
+        " poll TEXT NOT NULL, device TEXT NOT NULL, choice TEXT NOT NULL,"
+        " ts INTEGER NOT NULL DEFAULT (unixepoch()),"
+        " PRIMARY KEY (poll, device))"
+    )
+    conn.commit()
+    return conn
+
+
+SALT = None
+CONN = None
+
+
+def counts(poll: str) -> dict:
+    with _lock:
+        rows = CONN.execute(
+            "SELECT choice, COUNT(*) FROM votes WHERE poll=? GROUP BY choice", (poll,)
+        ).fetchall()
+    c = {k: 0 for k in POLLS[poll]}
+    for choice, n in rows:
+        if choice in c:
+            c[choice] = n
+    return {"poll": poll, "counts": c, "total": sum(c.values())}
+
+
+class Handler(BaseHTTPRequestHandler):
+    server_version = "furtka-poll/1"
+
+    def log_message(self, fmt, *args):  # quiet; nginx has the access log
+        log.debug(fmt, *args)
+
+    def _client_ip(self) -> str:
+        # nginx resolves the trusted proxy chain (real_ip module, see
+        # ops/nginx/furtka.org.conf) and hands us the result as X-Real-IP.
+        # We never parse X-Forwarded-For here: its leading entries are
+        # whatever the client chose to send.
+        return self.headers.get("X-Real-IP") or self.client_address[0]
+
+    def _device(self) -> str:
+        ua = self.headers.get("User-Agent", "")
+        h = hashlib.sha256(SALT + self._client_ip().encode() + b"|" + ua.encode())
+        return h.hexdigest()[:32]
+
+    def _json(self, status: int, payload: dict):
+        body = json.dumps(payload).encode()
+        self.send_response(status)
+        self.send_header("Content-Type", "application/json; charset=utf-8")
+        self.send_header("Content-Length", str(len(body)))
+        self.send_header("Cache-Control", "no-store")
+        self.end_headers()
+        self.wfile.write(body)
+
+    def _poll(self):
+        name = self.path.strip("/").split("?")[0]
+        if name not in POLLS:
+            self._json(404, {"error": "no such poll"})
+            return None
+        return name
+
+    def do_GET(self):
+        poll = self._poll()
+        if not poll:
+            return
+        payload = counts(poll)
+        with _lock:
+            row = CONN.execute(
+                "SELECT choice FROM votes WHERE poll=? AND device=?", (poll, self._device())
+            ).fetchone()
+        payload["yours"] = row[0] if row else None
+        self._json(200, payload)
+
+    def do_POST(self):
+        poll = self._poll()
+        if not poll:
+            return
+        try:
+            n = int(self.headers.get("Content-Length", "0"))
+            if n > MAX_BODY:
+                raise ValueError("body too large")
+            data = json.loads(self.rfile.read(n) or b"{}")
+            choice = str(data.get("choice", ""))
+        except (ValueError, json.JSONDecodeError):
+            self._json(400, {"error": "bad request"})
+            return
+        if choice not in POLLS[poll]:
+            self._json(400, {"error": "unknown choice"})
+            return
+        with _lock:
+            CONN.execute(
+                "INSERT INTO votes (poll, device, choice) VALUES (?,?,?)"
+                " ON CONFLICT(poll, device) DO UPDATE SET choice=excluded.choice, ts=unixepoch()",
+                (poll, self._device(), choice),
+            )
+            CONN.commit()
+        payload = counts(poll)
+        payload["yours"] = choice
+        self._json(200, payload)
+
+
+def main():
+    global SALT, CONN
+    logging.basicConfig(
+        level=os.environ.get("POLL_LOGLEVEL", "INFO"),
+        stream=sys.stderr,
+        format="%(levelname)s %(message)s",
+    )
+    os.makedirs(STATE_DIR, exist_ok=True)
+    SALT = _salt()
+    CONN = _db()
+    srv = ThreadingHTTPServer((LISTEN, PORT), Handler)
+    log.info("listening on %s:%d, db %s", LISTEN, PORT, DB_PATH)
+    srv.serve_forever()
+
+
+if __name__ == "__main__":
+    main()

ops/poll/setup-poll.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Install / update the poll counter on forge-runner-01. Idempotent.
+#
+# Usage (on the VM, with sudo):
+#   sudo ops/poll/setup-poll.sh            # install / update
+#   sudo ops/poll/setup-poll.sh --reset    # ... and wipe all votes
+set -euo pipefail
+HERE="$(cd "$(dirname "$0")" && pwd)"
+
+if [ "${1:-}" = "--reset" ]; then
+  systemctl stop furtka-poll 2>/dev/null || true
+  rm -f /var/lib/furtka-poll/votes.db
+  echo "votes wiped"
+fi
+
+install -d -m 0755 /opt/furtka-poll
+install -m 0644 "$HERE/pollsvc.py" /opt/furtka-poll/pollsvc.py
+install -m 0644 "$HERE/furtka-poll.service" /etc/systemd/system/furtka-poll.service
+
+systemctl daemon-reload
+systemctl enable --now furtka-poll
+systemctl restart furtka-poll
+sleep 1
+systemctl --no-pager --lines=3 status furtka-poll
+curl -fsS http://127.0.0.1:8090/logo && echo
+echo "OK: furtka-poll running on 127.0.0.1:8090"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "furtka"
-version = "26.16-alpha"
+version = "26.20-alpha"
 description = "Open-source home server OS — simple enough for everyone."
 requires-python = ">=3.11"
 readme = "README.md"

tests/test_api.py

@@ -40,6 +40,7 @@ def fake_dirs(tmp_path, monkeypatch):
     # /run/furtka/install.lock by default — redirect into tmp_path so
     # test code doesn't need root.
     monkeypatch.setenv("FURTKA_INSTALL_STATE", str(tmp_path / "install-state.json"))
+    monkeypatch.setenv("FURTKA_INSTALL_PLAN", str(tmp_path / "install-plan.json"))
     monkeypatch.setenv("FURTKA_INSTALL_LOCK", str(tmp_path / "install.lock"))
     # install_runner caches env vars at import time, so reload it to
     # pick up the tmp-path env vars this fixture just set.
@@ -258,6 +259,136 @@ def test_remove_endpoint_happy_path(fake_dirs, no_docker, no_systemd_run):
     assert not (apps / "fileshare").exists()
 
 
+# --- Dependency plan + confirm flow ----------------------------------------
+
+
+def test_install_plan_endpoint_lone_app(fake_dirs):
+    _, bundled = fake_dirs
+    _write_bundled(bundled, "fileshare", env_example="A=real")
+    status, body = api._do_install_plan("fileshare")
+    assert status == 200
+    assert body["target"] == "fileshare"
+    assert body["to_install"] == ["fileshare"]
+    assert body["install_order"] == ["fileshare"]
+
+
+def test_install_plan_endpoint_with_provider(fake_dirs):
+    _, bundled = fake_dirs
+    _write_bundled(
+        bundled,
+        "mosquitto",
+        manifest=dict(VALID_MANIFEST, name="mosquitto"),
+        env_example="A=real",
+    )
+    consumer = dict(
+        VALID_MANIFEST,
+        name="zigbee2mqtt",
+        requires=[{"app": "mosquitto"}],
+    )
+    _write_bundled(bundled, "zigbee2mqtt", manifest=consumer, env_example="A=real")
+    status, body = api._do_install_plan("zigbee2mqtt")
+    assert status == 200
+    assert body["install_order"] == ["mosquitto", "zigbee2mqtt"]
+    assert body["to_install"] == ["mosquitto", "zigbee2mqtt"]
+    assert body["already_installed"] == []
+    assert [s["name"] for s in body["summaries"]] == ["mosquitto", "zigbee2mqtt"]
+
+
+def test_install_plan_endpoint_rejects_cycle(fake_dirs):
+    _, bundled = fake_dirs
+    _write_bundled(bundled, "a", manifest=dict(VALID_MANIFEST, name="a", requires=[{"app": "b"}]))
+    _write_bundled(bundled, "b", manifest=dict(VALID_MANIFEST, name="b", requires=[{"app": "a"}]))
+    status, body = api._do_install_plan("a")
+    assert status == 400
+    assert "circular" in body["error"]
+
+
+def test_install_endpoint_without_confirm_returns_409_for_transitive(fake_dirs):
+    _, bundled = fake_dirs
+    _write_bundled(
+        bundled,
+        "mosquitto",
+        manifest=dict(VALID_MANIFEST, name="mosquitto"),
+        env_example="A=real",
+    )
+    consumer = dict(VALID_MANIFEST, name="zigbee2mqtt", requires=[{"app": "mosquitto"}])
+    _write_bundled(bundled, "zigbee2mqtt", manifest=consumer, env_example="A=real")
+    status, body = api._do_install("zigbee2mqtt")
+    assert status == 409
+    assert "additional apps required" in body["error"]
+    assert body["to_install"] == ["mosquitto", "zigbee2mqtt"]
+
+
+def test_install_endpoint_with_confirm_dispatches_plan(fake_dirs, no_docker, no_systemd_run):
+    apps, bundled = fake_dirs
+    _write_bundled(
+        bundled,
+        "mosquitto",
+        manifest=dict(VALID_MANIFEST, name="mosquitto"),
+        env_example="A=real",
+    )
+    consumer = dict(VALID_MANIFEST, name="zigbee2mqtt", requires=[{"app": "mosquitto"}])
+    _write_bundled(bundled, "zigbee2mqtt", manifest=consumer, env_example="A=real")
+    status, body = api._do_install("zigbee2mqtt", confirm_dependencies=True)
+    assert status == 202
+    # Both apps installed in plan order.
+    assert (apps / "mosquitto").exists()
+    assert (apps / "zigbee2mqtt").exists()
+    # Plan file written for the background runner.
+    import json as _json
+
+    plan = _json.loads(api.install_runner.plan_path().read_text())
+    assert plan["target"] == "zigbee2mqtt"
+    assert plan["to_install"] == ["mosquitto", "zigbee2mqtt"]
+
+
+def test_install_endpoint_lone_target_skips_confirm(fake_dirs, no_docker, no_systemd_run):
+    _, bundled = fake_dirs
+    _write_bundled(bundled, "fileshare", env_example="A=real")
+    status, body = api._do_install("fileshare")
+    # No transitive deps, so no 409 — straight to 202.
+    assert status == 202
+
+
+def test_remove_blocked_when_other_app_depends(fake_dirs, no_docker, no_systemd_run):
+    apps, bundled = fake_dirs
+    _write_bundled(
+        bundled,
+        "mosquitto",
+        manifest=dict(VALID_MANIFEST, name="mosquitto"),
+        env_example="A=real",
+    )
+    consumer = dict(VALID_MANIFEST, name="zigbee2mqtt", requires=[{"app": "mosquitto"}])
+    _write_bundled(bundled, "zigbee2mqtt", manifest=consumer, env_example="A=real")
+    api._do_install("zigbee2mqtt", confirm_dependencies=True)
+    status, body = api._do_remove("mosquitto")
+    assert status == 409
+    assert body["dependents"] == ["zigbee2mqtt"]
+    assert "required by" in body["error"]
+    # mosquitto is still installed — guard refused to remove it.
+    assert (apps / "mosquitto").exists()
+
+
+def test_remove_succeeds_when_dependent_first_removed(fake_dirs, no_docker, no_systemd_run):
+    apps, bundled = fake_dirs
+    _write_bundled(
+        bundled,
+        "mosquitto",
+        manifest=dict(VALID_MANIFEST, name="mosquitto"),
+        env_example="A=real",
+    )
+    consumer = dict(VALID_MANIFEST, name="zigbee2mqtt", requires=[{"app": "mosquitto"}])
+    _write_bundled(bundled, "zigbee2mqtt", manifest=consumer, env_example="A=real")
+    api._do_install("zigbee2mqtt", confirm_dependencies=True)
+    # Remove consumer first — should succeed.
+    status, _ = api._do_remove("zigbee2mqtt")
+    assert status == 200
+    # Now mosquitto has no dependents, so remove succeeds too.
+    status, _ = api._do_remove("mosquitto")
+    assert status == 200
+    assert not (apps / "mosquitto").exists()
+
+
 def _request(port, path, cookie=None, method="GET", body=None):
     headers = {}
     if cookie is not None:

tests/test_app.py

@@ -195,3 +195,34 @@ def test_build_archinstall_creds_uses_archinstall_sentinel_keys():
             "groups": [],
         }
     ]
+
+
+def test_log_page_done_state_shows_usb_step_before_restart(monkeypatch, tmp_path):
+    """The 'pull the USB stick' step must be visible *before* the restart
+    button — after the click the box reboots within seconds (first hardware
+    bench booted the stick again)."""
+    import app as app_module
+
+    log_path = tmp_path / "install.log"
+    log_path.write_text("Installation completed without any errors.\n")
+    monkeypatch.setattr(app_module, "INSTALL_LOG", log_path)
+    app_module.settings["hostname"] = "bench"
+
+    html = app_module.app.test_client().get("/install/log").get_data(as_text=True)
+
+    assert '<ol class="next-steps">' in html
+    assert "http://bench.local" in html
+    assert "USB stick is out" in html
+    assert html.index("next-steps") < html.index("USB stick is out")
+
+
+def test_log_page_running_state_has_no_restart_button(monkeypatch, tmp_path):
+    import app as app_module
+
+    log_path = tmp_path / "install.log"
+    log_path.write_text("Creating partitions: /dev/sda\n")
+    monkeypatch.setattr(app_module, "INSTALL_LOG", log_path)
+
+    html = app_module.app.test_client().get("/install/log").get_data(as_text=True)
+    assert "next-steps" not in html
+    assert "install_reboot" not in html and "restart now" not in html

tests/test_catalog.py

@@ -331,3 +331,21 @@ def test_write_and_read_state_round_trip(catalog):
     assert s["stage"] == "downloading"
     assert s["latest"] == "26.6"
     assert "updated_at" in s
+
+
+def test_sync_catalog_failure_writes_error_state(catalog, monkeypatch):
+    """A boot-time network failure must not leave the state file on
+    'checking' forever — the UI would show 'checking…' with nothing running."""
+    from furtka import _release_common as _rc
+
+    def offline(host, repo, path, *, error_cls=RuntimeError):
+        raise error_cls("forgejo api https://x/releases: Network is unreachable")
+
+    monkeypatch.setattr(_rc, "forgejo_api", offline)
+
+    with pytest.raises(catalog.CatalogError, match="Network is unreachable"):
+        catalog.sync_catalog()
+
+    state = catalog.read_state()
+    assert state["stage"] == "error"
+    assert "Network is unreachable" in state["error"]

tests/test_cli.py

@@ -103,3 +103,98 @@ def test_app_install_bg_returns_1_on_failure(tmp_path, monkeypatch, capsys):
     err = capsys.readouterr().err
     assert "install-bg failed" in err
     assert "compose pull failed" in err
+
+
+# --- Dependency-aware install + remove ---------------------------------------
+
+
+def _write_manifest(root, name, **overrides):
+    app = root / name
+    app.mkdir(parents=True, exist_ok=True)
+    payload = {
+        "name": name,
+        "display_name": name,
+        "version": "0.1.0",
+        "description": "x",
+        "volumes": [],
+        "ports": [],
+        "icon": "icon.svg",
+        **overrides,
+    }
+    (app / "manifest.json").write_text(json.dumps(payload))
+    (app / "docker-compose.yaml").write_text("services: {}\n")
+    return app
+
+
+def test_app_remove_blocked_by_dependent(tmp_path, monkeypatch, capsys):
+    _set_env(monkeypatch, tmp_path)
+    _write_manifest(tmp_path, "mosquitto")
+    _write_manifest(tmp_path, "zigbee2mqtt", requires=[{"app": "mosquitto"}])
+    rc = main(["app", "remove", "mosquitto"])
+    assert rc == 2
+    err = capsys.readouterr().err
+    assert "required by: zigbee2mqtt" in err
+
+
+def test_app_remove_unblocked_when_no_dependents(tmp_path, monkeypatch):
+    _set_env(monkeypatch, tmp_path)
+    _write_manifest(tmp_path, "mosquitto")
+    from furtka import dockerops
+
+    monkeypatch.setattr(dockerops, "compose_down", lambda *a, **k: None)
+    rc = main(["app", "remove", "mosquitto"])
+    assert rc == 0
+    assert not (tmp_path / "mosquitto").exists()
+
+
+def test_app_install_uses_plan_for_named_install(tmp_path, monkeypatch, capsys):
+    """Named install pulls in dependencies via plan_install."""
+    _set_env(monkeypatch, tmp_path)
+    bundled = tmp_path / "bundled"
+    bundled.mkdir()
+    monkeypatch.setenv("FURTKA_BUNDLED_APPS_DIR", str(bundled))
+    # No catalog dir — bundled-only.
+    monkeypatch.setenv("FURTKA_CATALOG_DIR", str(tmp_path / "catalog"))
+    _write_manifest(bundled, "mosquitto")
+    _write_manifest(bundled, "zigbee2mqtt", requires=[{"app": "mosquitto"}])
+
+    from furtka import install_runner, installer
+
+    # Stub install_from so we don't actually copy files / mess with placeholders.
+    install_calls: list[str] = []
+
+    def fake_install_from(src, settings=None):
+        install_calls.append(src.name)
+        return tmp_path / src.name
+
+    monkeypatch.setattr(installer, "install_from", fake_install_from)
+    monkeypatch.setattr(install_runner, "_INSTALL_PLAN", tmp_path / "install-plan.json")
+    # Named installs drive the docker phase through run_install (so on_install
+    # hooks fire) — stub it and assert it's invoked with the chosen target.
+    run_calls: list[str] = []
+    monkeypatch.setattr(install_runner, "run_install", lambda name: run_calls.append(name))
+
+    rc = main(["app", "install", "zigbee2mqtt"])
+    assert rc == 0
+    # Provider installed before consumer.
+    assert install_calls == ["mosquitto", "zigbee2mqtt"]
+    # The docker phase (which fires on_install hooks) ran for the target.
+    assert run_calls == ["zigbee2mqtt"]
+    # And the plan file was staged for run_install to consume.
+    plan = json.loads(install_runner.plan_path().read_text())
+    assert plan["target"] == "zigbee2mqtt"
+    assert plan["to_install"] == ["mosquitto", "zigbee2mqtt"]
+
+
+def test_app_install_named_with_cycle_exits_2(tmp_path, monkeypatch, capsys):
+    _set_env(monkeypatch, tmp_path)
+    bundled = tmp_path / "bundled"
+    bundled.mkdir()
+    monkeypatch.setenv("FURTKA_BUNDLED_APPS_DIR", str(bundled))
+    monkeypatch.setenv("FURTKA_CATALOG_DIR", str(tmp_path / "catalog"))
+    _write_manifest(bundled, "a", requires=[{"app": "b"}])
+    _write_manifest(bundled, "b", requires=[{"app": "a"}])
+    rc = main(["app", "install", "a"])
+    assert rc == 2
+    err = capsys.readouterr().err
+    assert "circular" in err.lower()

tests/test_deps.py

@@ -0,0 +1,183 @@
+import json
+
+import pytest
+
+from furtka import deps
+
+BASE_MANIFEST = {
+    "display_name": "X",
+    "version": "0.1.0",
+    "description": "x",
+    "volumes": [],
+    "ports": [],
+    "icon": "icon.svg",
+}
+
+
+@pytest.fixture
+def apps_root(tmp_path, monkeypatch):
+    """Three roots: installed, catalog, bundled. Each set up empty by default."""
+    installed = tmp_path / "installed"
+    catalog = tmp_path / "catalog" / "apps"
+    bundled = tmp_path / "bundled"
+    for p in (installed, catalog, bundled):
+        p.mkdir(parents=True)
+    monkeypatch.setenv("FURTKA_APPS_DIR", str(installed))
+    monkeypatch.setenv("FURTKA_CATALOG_DIR", str(tmp_path / "catalog"))
+    monkeypatch.setenv("FURTKA_BUNDLED_APPS_DIR", str(bundled))
+    return {"installed": installed, "catalog": catalog, "bundled": bundled}
+
+
+def _write_manifest(root, name, **overrides):
+    app = root / name
+    app.mkdir(parents=True, exist_ok=True)
+    payload = dict(BASE_MANIFEST, name=name, **overrides)
+    (app / "manifest.json").write_text(json.dumps(payload))
+    return app
+
+
+def test_plan_install_no_deps(apps_root):
+    _write_manifest(apps_root["catalog"], "alone")
+    plan = deps.plan_install("alone")
+    assert plan.target == "alone"
+    assert plan.install_order == ("alone",)
+    assert plan.to_install == ("alone",)
+    assert plan.already_installed == frozenset()
+
+
+def test_plan_install_linear_chain(apps_root):
+    # A requires B, B requires C — all in catalog, none installed yet.
+    _write_manifest(apps_root["catalog"], "c")
+    _write_manifest(apps_root["catalog"], "b", requires=[{"app": "c"}])
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}])
+    plan = deps.plan_install("a")
+    assert plan.install_order == ("c", "b", "a")
+    assert plan.to_install == ("c", "b", "a")
+
+
+def test_plan_install_diamond(apps_root):
+    # A requires B and C; B requires D; C requires D. D must appear once,
+    # before B and C, which come before A.
+    _write_manifest(apps_root["catalog"], "d")
+    _write_manifest(apps_root["catalog"], "b", requires=[{"app": "d"}])
+    _write_manifest(apps_root["catalog"], "c", requires=[{"app": "d"}])
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}, {"app": "c"}])
+    plan = deps.plan_install("a")
+    order = plan.install_order
+    # D first, A last, B and C in between (deterministically alphabetical).
+    assert order[0] == "d"
+    assert order[-1] == "a"
+    assert set(order[1:-1]) == {"b", "c"}
+    assert order.count("d") == 1
+
+
+def test_plan_install_already_installed_provider(apps_root):
+    _write_manifest(apps_root["installed"], "b")  # provider already installed
+    _write_manifest(apps_root["catalog"], "b")
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}])
+    plan = deps.plan_install("a")
+    assert plan.install_order == ("b", "a")
+    assert plan.to_install == ("a",)
+    assert plan.already_installed == frozenset({"b"})
+
+
+def test_plan_install_cycle_two_node(apps_root):
+    # Manifest validator already rejects self-reference at load time, but
+    # mutual references (A -> B -> A) only show up at plan time.
+    _write_manifest(apps_root["catalog"], "b", requires=[{"app": "a"}])
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}])
+    with pytest.raises(deps.DependencyError, match="circular"):
+        deps.plan_install("a")
+
+
+def test_plan_install_cycle_three_node(apps_root):
+    _write_manifest(apps_root["catalog"], "c", requires=[{"app": "a"}])
+    _write_manifest(apps_root["catalog"], "b", requires=[{"app": "c"}])
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}])
+    with pytest.raises(deps.DependencyError, match="a -> b -> c -> a"):
+        deps.plan_install("a")
+
+
+def test_plan_install_missing_provider(apps_root):
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "ghost"}])
+    with pytest.raises(deps.DependencyError, match="ghost"):
+        deps.plan_install("a")
+
+
+def test_plan_install_prefers_installed_over_catalog(apps_root):
+    # If a provider exists in both installed and catalog, we resolve via
+    # installed (so we read the actual on-disk manifest the user has).
+    _write_manifest(apps_root["installed"], "b")
+    _write_manifest(apps_root["catalog"], "b", requires=[{"app": "extra"}])
+    _write_manifest(apps_root["catalog"], "a", requires=[{"app": "b"}])
+    plan = deps.plan_install("a")
+    # The installed manifest has no requires, so "extra" is NOT pulled in.
+    assert plan.install_order == ("b", "a")
+
+
+def test_dependents_of_empty(apps_root):
+    assert deps.dependents_of("anything") == ()
+
+
+def test_dependents_of_finds_consumers(apps_root):
+    _write_manifest(apps_root["installed"], "x")
+    _write_manifest(apps_root["installed"], "a", requires=[{"app": "x"}])
+    _write_manifest(apps_root["installed"], "b", requires=[{"app": "x"}])
+    _write_manifest(apps_root["installed"], "unrelated")
+    assert deps.dependents_of("x") == ("a", "b")
+    assert deps.dependents_of("unrelated") == ()
+
+
+def test_installed_topo_order_preserves_alpha_when_independent(apps_root):
+    from furtka.scanner import scan
+
+    _write_manifest(apps_root["installed"], "alpha")
+    _write_manifest(apps_root["installed"], "bravo")
+    _write_manifest(apps_root["installed"], "charlie")
+    ordered = deps.installed_topo_order(scan(apps_root["installed"]))
+    assert [r.manifest.name for r in ordered] == ["alpha", "bravo", "charlie"]
+
+
+def test_installed_topo_order_puts_providers_first(apps_root):
+    from furtka.scanner import scan
+
+    # Alphabetically z2m comes before mqtt? No — but let's force the
+    # dependency to win. consumer=alpha requires=provider=zulu, so naive
+    # alpha order would put alpha first. Topo must flip them.
+    _write_manifest(apps_root["installed"], "zulu")
+    _write_manifest(apps_root["installed"], "alpha", requires=[{"app": "zulu"}])
+    ordered = deps.installed_topo_order(scan(apps_root["installed"]))
+    names = [r.manifest.name for r in ordered]
+    assert names == ["zulu", "alpha"]
+
+
+def test_installed_topo_order_missing_provider_tails_app(apps_root):
+    from furtka.scanner import scan
+
+    _write_manifest(apps_root["installed"], "good")
+    _write_manifest(apps_root["installed"], "needy", requires=[{"app": "ghost"}])
+    ordered = deps.installed_topo_order(scan(apps_root["installed"]))
+    names = [r.manifest.name for r in ordered]
+    # `good` first (no deps), `needy` last (unresolved).
+    assert names == ["good", "needy"]
+
+
+def test_provider_exec_service_picks_first_service(apps_root, monkeypatch):
+    from furtka import dockerops
+
+    monkeypatch.setattr(
+        dockerops,
+        "compose_image_tags",
+        lambda app_dir, project: {"server": "img:1", "worker": "img:2"},
+    )
+    assert deps.provider_exec_service(apps_root["installed"] / "x", "x") == "server"
+
+
+def test_provider_exec_service_falls_back_to_project_on_docker_error(apps_root, monkeypatch):
+    from furtka import dockerops
+
+    def boom(app_dir, project):
+        raise dockerops.DockerError("docker not running")
+
+    monkeypatch.setattr(dockerops, "compose_image_tags", boom)
+    assert deps.provider_exec_service(apps_root["installed"] / "x", "myproj") == "myproj"

tests/test_diskprep.py

@@ -0,0 +1,146 @@
+"""release_disk() against a recorded `lsblk -P` picture of the first
+hardware bench: an SSD with an old Proxmox VE `pve` volume group stacked on
+sda3 (swap, root, thin pool). Commands are captured through the injected
+runner — nothing touches real devices."""
+
+import subprocess
+from pathlib import Path
+
+import pytest
+from diskprep import release_disk
+
+# What the bench looked like before cleanup (lsblk -lnP -o NAME,TYPE,MOUNTPOINTS /dev/sda).
+BENCH_BEFORE = """NAME="sda" TYPE="disk" MOUNTPOINTS=""
+NAME="sda1" TYPE="part" MOUNTPOINTS=""
+NAME="sda3" TYPE="part" MOUNTPOINTS=""
+NAME="pve-swap" TYPE="lvm" MOUNTPOINTS="[SWAP]"
+NAME="pve-root" TYPE="lvm" MOUNTPOINTS="/mnt/old"
+NAME="pve-data_tmeta" TYPE="lvm" MOUNTPOINTS=""
+NAME="pve-data-tpool" TYPE="lvm" MOUNTPOINTS=""
+NAME="pve-data" TYPE="lvm" MOUNTPOINTS=""
+NAME="pve-data_tdata" TYPE="lvm" MOUNTPOINTS=""
+NAME="pve-data-tpool" TYPE="lvm" MOUNTPOINTS=""
+NAME="pve-data" TYPE="lvm" MOUNTPOINTS=""
+"""
+
+BENCH_CLEAN = """NAME="sda" TYPE="disk" MOUNTPOINTS=""
+NAME="sda1" TYPE="part" MOUNTPOINTS=""
+NAME="sda3" TYPE="part" MOUNTPOINTS=""
+"""
+
+EMPTY = """NAME="sda" TYPE="disk" MOUNTPOINTS=""
+"""
+
+
+class FakeRunner:
+    """Answers lsblk from a script of snapshots (one per call, last one
+    sticks) and records everything else."""
+
+    def __init__(self, lsblk_outputs):
+        self.lsblk_outputs = list(lsblk_outputs)
+        self.calls = []
+
+    def __call__(self, cmd, capture_output=True, text=True):
+        if cmd[0] == "lsblk":
+            if len(self.lsblk_outputs) > 1:
+                out = self.lsblk_outputs.pop(0)
+            else:
+                out = self.lsblk_outputs[0]
+            return subprocess.CompletedProcess(cmd, 0, out, "")
+        self.calls.append(cmd)
+        return subprocess.CompletedProcess(cmd, 0, "", "")
+
+
+def test_release_tears_down_lvm_stack_leaves_first():
+    # lsblk #1 (inventory) and #2 (first removal pass) see the full stack;
+    # everything after that is clean — the dm removals "worked".
+    runner = FakeRunner([BENCH_BEFORE, BENCH_BEFORE, BENCH_CLEAN])
+    lines = release_disk("/dev/sda", run=runner)
+    calls = runner.calls
+
+    assert ["swapoff", "/dev/pve-swap"] in calls
+    assert ["umount", "--all-targets", "/dev/pve-root"] in calls
+    removed = [c[2] for c in calls if c[:2] == ["dmsetup", "remove"]]
+    # Thin LV before its pool, pool before tmeta/tdata.
+    assert removed.index("pve-data") < removed.index("pve-data-tpool")
+    assert removed.index("pve-data-tpool") < removed.index("pve-data_tmeta")
+    assert set(removed) == {
+        "pve-swap",
+        "pve-root",
+        "pve-data_tmeta",
+        "pve-data-tpool",
+        "pve-data",
+        "pve-data_tdata",
+    }
+    assert ["wipefs", "-a", "/dev/sda3"] in calls
+    assert ["wipefs", "-a", "/dev/sda1"] in calls
+    assert ["wipefs", "-a", "/dev/sda"] in calls
+    assert calls[-1] == ["blockdev", "--rereadpt", "/dev/sda"]
+    assert not any("WARNING" in line for line in lines)
+    assert lines[0].startswith("Releasing /dev/sda")
+
+
+def test_release_warns_when_stack_survives():
+    runner = FakeRunner([BENCH_BEFORE])  # never becomes clean
+    lines = release_disk("/dev/sda", run=runner)
+    assert any("WARNING: still in use" in line for line in lines)
+    # Still tries to give archinstall a chance.
+    assert ["blockdev", "--rereadpt", "/dev/sda"] in runner.calls
+
+
+def test_release_empty_disk_only_wipes_and_rereads():
+    runner = FakeRunner([EMPTY])
+    lines = release_disk("sda", run=runner)  # bare name is accepted too
+    assert runner.calls == [["wipefs", "-a", "/dev/sda"], ["blockdev", "--rereadpt", "/dev/sda"]]
+    assert any("nothing stacked" in line for line in lines)
+
+
+def test_release_survives_missing_tools():
+    def runner(cmd, capture_output=True, text=True):
+        if cmd[0] == "lsblk":
+            return subprocess.CompletedProcess(cmd, 0, BENCH_BEFORE, "")
+        raise FileNotFoundError(cmd[0])
+
+    lines = release_disk("/dev/sda", run=runner)
+    assert any("command not found" in line for line in lines)
+
+
+@pytest.fixture
+def app_module(monkeypatch, tmp_path):
+    import app as app_module
+
+    monkeypatch.setattr(app_module, "INSTALL_LOG", tmp_path / "install.log")
+    monkeypatch.setattr(app_module, "STATE_DIR", tmp_path / "state")
+    return app_module
+
+
+def test_install_run_releases_disk_before_spawning(app_module, monkeypatch):
+    order = []
+
+    def fake_release(disk):
+        order.append(("release", disk))
+        return ["Releasing X"]
+
+    monkeypatch.setattr(app_module, "release_disk", fake_release)
+    monkeypatch.setattr(app_module, "spawn_archinstall", lambda *a: order.append(("spawn",)))
+    monkeypatch.setattr(app_module, "build_archinstall_config", lambda s: {})
+    monkeypatch.setattr(app_module, "build_archinstall_creds", lambda s: {})
+    monkeypatch.delenv("FURTKA_DRY_RUN", raising=False)
+    app_module.settings.update(boot_drive="/dev/sda", username="u", password="pw12345678")
+
+    client = app_module.app.test_client()
+    resp = client.post("/install/run")
+
+    assert resp.status_code == 302
+    assert order == [("release", "/dev/sda"), ("spawn",)]
+    assert Path(app_module.INSTALL_LOG).read_text().startswith("Releasing X")
+
+
+def test_progress_names_disk_in_use_failure(app_module):
+    log = (
+        "Traceback (most recent call last):\n"
+        "_ped.IOException: ... unable to inform the kernel of the change ..."
+    )
+    progress = app_module.parse_install_progress(log)
+    assert progress["status"] == "error"
+    assert "still in use" in progress["phase"]

tests/test_dockerops.py

@@ -0,0 +1,116 @@
+import subprocess
+
+import pytest
+
+from furtka import dockerops
+
+
+class FakeProc:
+    def __init__(self, stdout=b"", stderr=b"", returncode=0):
+        self.stdout = stdout
+        self.stderr = stderr
+        self.returncode = returncode
+
+
+def test_compose_exec_builds_command(tmp_path, monkeypatch):
+    recorded = {}
+
+    def fake_run(cmd, **kwargs):
+        recorded["cmd"] = cmd
+        recorded["kwargs"] = kwargs
+        return FakeProc(stdout="ok\n", returncode=0)
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    out = dockerops.compose_exec(tmp_path, "myproj", "svc", ["echo", "hi"])
+    assert out == "ok\n"
+    cmd = recorded["cmd"]
+    # docker compose --project-name myproj --file <path>/docker-compose.yaml exec -T svc echo hi
+    assert cmd[0] == "docker"
+    assert cmd[1] == "compose"
+    assert "--project-name" in cmd and "myproj" in cmd
+    assert "exec" in cmd
+    assert "-T" in cmd
+    # -T must come before the service name
+    assert cmd.index("-T") < cmd.index("svc")
+    # argv appended after service
+    assert cmd[-2:] == ["echo", "hi"]
+
+
+def test_compose_exec_propagates_env(tmp_path, monkeypatch):
+    recorded = {}
+
+    def fake_run(cmd, **kwargs):
+        recorded["cmd"] = cmd
+        return FakeProc()
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    dockerops.compose_exec(tmp_path, "p", "s", ["true"], env={"A": "1", "B": "two"})
+    cmd = recorded["cmd"]
+    # `--env A=1 --env B=two` should appear before the service name.
+    s_idx = cmd.index("s")
+    env_args = cmd[:s_idx]
+    assert env_args.count("--env") == 2
+    assert "A=1" in env_args
+    assert "B=two" in env_args
+
+
+def test_compose_exec_raises_on_nonzero(tmp_path, monkeypatch):
+    def fake_run(cmd, **kwargs):
+        return FakeProc(stdout="", stderr="boom", returncode=2)
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    with pytest.raises(dockerops.DockerError, match="exited 2"):
+        dockerops.compose_exec(tmp_path, "p", "s", ["fail"])
+
+
+def test_compose_exec_raises_on_timeout(tmp_path, monkeypatch):
+    def fake_run(cmd, **kwargs):
+        raise subprocess.TimeoutExpired(cmd, timeout=kwargs.get("timeout"))
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    with pytest.raises(dockerops.DockerError, match="timed out"):
+        dockerops.compose_exec(tmp_path, "p", "s", ["sleep", "9999"], timeout=1)
+
+
+def test_compose_exec_script_streams_via_stdin(tmp_path, monkeypatch):
+    script = tmp_path / "hook.sh"
+    body = b"#!/bin/sh\necho hello\n"
+    script.write_bytes(body)
+    recorded = {}
+
+    def fake_run(cmd, **kwargs):
+        recorded["cmd"] = cmd
+        recorded["input"] = kwargs["input"]
+        return FakeProc(stdout=b"hello\n", returncode=0)
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    out = dockerops.compose_exec_script(tmp_path, "p", "s", script)
+    assert out == "hello\n"
+    # exec ... s sh -s (script body comes in on stdin)
+    cmd = recorded["cmd"]
+    assert cmd[-3:] == ["s", "sh", "-s"]
+    assert recorded["input"] == body
+
+
+def test_compose_exec_script_raises_on_nonzero(tmp_path, monkeypatch):
+    script = tmp_path / "fail.sh"
+    script.write_bytes(b"exit 1\n")
+
+    def fake_run(cmd, **kwargs):
+        return FakeProc(stdout=b"", stderr=b"hook says no", returncode=1)
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    with pytest.raises(dockerops.DockerError, match="hook fail.sh exited 1"):
+        dockerops.compose_exec_script(tmp_path, "p", "s", script)
+
+
+def test_compose_exec_script_raises_on_timeout(tmp_path, monkeypatch):
+    script = tmp_path / "slow.sh"
+    script.write_bytes(b"sleep 10\n")
+
+    def fake_run(cmd, **kwargs):
+        raise subprocess.TimeoutExpired(cmd, timeout=kwargs.get("timeout"))
+
+    monkeypatch.setattr(subprocess, "run", fake_run)
+    with pytest.raises(dockerops.DockerError, match="hook slow.sh timed out"):
+        dockerops.compose_exec_script(tmp_path, "p", "s", script, timeout=1)

tests/test_install_runner.py

@@ -21,6 +21,7 @@ def runner(tmp_path, monkeypatch):
     apps.mkdir()
     monkeypatch.setenv("FURTKA_APPS_DIR", str(apps))
     monkeypatch.setenv("FURTKA_INSTALL_STATE", str(tmp_path / "install-state.json"))
+    monkeypatch.setenv("FURTKA_INSTALL_PLAN", str(tmp_path / "install-plan.json"))
     monkeypatch.setenv("FURTKA_INSTALL_LOCK", str(tmp_path / "install.lock"))
 
     import importlib
@@ -33,7 +34,7 @@ def runner(tmp_path, monkeypatch):
     return r
 
 
-def _write_installed_app(apps_dir: Path, name: str = "fileshare"):
+def _write_installed_app(apps_dir: Path, name: str = "fileshare", **overrides):
     app = apps_dir / name
     app.mkdir()
     manifest = {
@@ -44,6 +45,7 @@ def _write_installed_app(apps_dir: Path, name: str = "fileshare"):
         "volumes": ["files"],
         "ports": [445],
         "icon": "icon.svg",
+        **overrides,
     }
     (app / "manifest.json").write_text(json.dumps(manifest))
     (app / "docker-compose.yaml").write_text("services: {}\n")
@@ -175,3 +177,304 @@ def test_run_install_releases_lock_after_error(runner, monkeypatch):
 
     fh = runner.acquire_lock()
     fh.close()
+
+
+# --- plan-aware multi-app installs -------------------------------------------
+
+
+def _write_plan(plan_path: Path, target: str, to_install: list[str]) -> None:
+    plan_path.write_text(json.dumps({"target": target, "to_install": to_install}))
+
+
+def _stub_docker_ops(monkeypatch, calls: list):
+    import furtka.dockerops as dockerops
+
+    def _pull(app_dir, project):
+        calls.append(("pull", project))
+
+    def _vol(name):
+        calls.append(("vol", name))
+
+    def _up(app_dir, project):
+        calls.append(("up", project))
+
+    monkeypatch.setattr(dockerops, "compose_pull", _pull)
+    monkeypatch.setattr(dockerops, "ensure_volume", _vol)
+    monkeypatch.setattr(dockerops, "compose_up", _up)
+
+
+def test_run_install_iterates_plan_order(runner, monkeypatch):
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    _write_installed_app(
+        apps_dir(),
+        "zigbee2mqtt",
+        requires=[{"app": "mosquitto"}],
+    )
+    _write_plan(runner.plan_path(), "zigbee2mqtt", ["mosquitto", "zigbee2mqtt"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+
+    runner.run_install("zigbee2mqtt")
+
+    # mosquitto fully reconciled before zigbee2mqtt starts.
+    assert [c for c in calls if c[0] == "pull"] == [("pull", "mosquitto"), ("pull", "zigbee2mqtt")]
+    assert [c for c in calls if c[0] == "up"] == [("up", "mosquitto"), ("up", "zigbee2mqtt")]
+
+    s = runner.read_state()
+    assert s["stage"] == "done"
+    assert s["target"] == "zigbee2mqtt"
+    assert s["app"] == "zigbee2mqtt"
+
+
+def test_run_install_fires_on_install_hook_against_provider(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    mosq = _write_installed_app(apps_dir(), "mosquitto")
+    # Provider ships a hook script.
+    (mosq / "hooks").mkdir()
+    hook = mosq / "hooks" / "create-user.sh"
+    hook.write_bytes(b"#!/bin/sh\necho MQTT_USER=z2m\necho MQTT_PASS=hunter2\n")
+
+    consumer = _write_installed_app(
+        apps_dir(),
+        "zigbee2mqtt",
+        requires=[{"app": "mosquitto", "on_install": "hooks/create-user.sh"}],
+    )
+    # Consumer's .env starts empty.
+    (consumer / ".env").write_text("")
+
+    _write_plan(runner.plan_path(), "zigbee2mqtt", ["mosquitto", "zigbee2mqtt"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+
+    captured = {}
+
+    def fake_exec_script(app_dir, project, service, script_path, *, env, timeout):
+        captured["app_dir"] = app_dir
+        captured["project"] = project
+        captured["service"] = service
+        captured["script_path"] = script_path
+        captured["env"] = env
+        captured["timeout"] = timeout
+        return "MQTT_USER=z2m\nMQTT_PASS=hunter2\n"
+
+    # Tell the provider_exec_service helper to pick a deterministic service.
+    monkeypatch.setattr(
+        dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "eclipse-mosquitto:2"}
+    )
+    monkeypatch.setattr(dockerops, "compose_exec_script", fake_exec_script)
+
+    runner.run_install("zigbee2mqtt")
+
+    # Hook was called against the provider, with the consumer's name + version
+    # in env, and the timeout we expect.
+    assert captured["project"] == "mosquitto"
+    assert captured["service"] == "mosquitto"
+    assert captured["script_path"] == hook
+    assert captured["env"] == {
+        "FURTKA_CONSUMER_APP": "zigbee2mqtt",
+        "FURTKA_CONSUMER_VERSION": "0.1.0",
+    }
+    assert captured["timeout"] == 60.0
+
+    # Consumer's .env now has the hook output.
+    env_text = (consumer / ".env").read_text()
+    assert "MQTT_USER=z2m" in env_text
+    assert "MQTT_PASS=hunter2" in env_text
+    # Mode 0600.
+    assert (consumer / ".env").stat().st_mode & 0o777 == 0o600
+
+
+def test_run_install_hook_furtka_json_sentinel(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    consumer = _write_installed_app(
+        apps_dir(),
+        "z2m",
+        requires=[{"app": "mosquitto", "on_install": "hooks/x.sh"}],
+    )
+    (apps_dir() / "mosquitto" / "hooks").mkdir()
+    (apps_dir() / "mosquitto" / "hooks" / "x.sh").write_bytes(b"")
+    (consumer / ".env").write_text("")
+    _write_plan(runner.plan_path(), "z2m", ["mosquitto", "z2m"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+
+    # Hook output mixes plain KEY=VALUE and a FURTKA_JSON sentinel. JSON
+    # wins on conflict (overlays plain).
+    monkeypatch.setattr(
+        dockerops,
+        "compose_exec_script",
+        lambda *a, **k: 'MQTT_USER=oldval\nFURTKA_JSON: {"MQTT_USER": "newval", "TOKEN": "abc"}\n',
+    )
+
+    runner.run_install("z2m")
+
+    env_text = (consumer / ".env").read_text()
+    assert "MQTT_USER=newval" in env_text  # JSON overlay wins
+    assert "TOKEN=abc" in env_text
+
+
+def test_run_install_hook_rejects_bad_key_name(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    consumer = _write_installed_app(
+        apps_dir(),
+        "z2m",
+        requires=[{"app": "mosquitto", "on_install": "hooks/x.sh"}],
+    )
+    (apps_dir() / "mosquitto" / "hooks").mkdir()
+    (apps_dir() / "mosquitto" / "hooks" / "x.sh").write_bytes(b"")
+    (consumer / ".env").write_text("")
+    _write_plan(runner.plan_path(), "z2m", ["mosquitto", "z2m"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+    monkeypatch.setattr(dockerops, "compose_exec_script", lambda *a, **k: "lowercase_key=oops\n")
+
+    with pytest.raises(runner.InstallRunnerError, match="UPPER_SNAKE_CASE"):
+        runner.run_install("z2m")
+
+    s = runner.read_state()
+    assert s["stage"] == "error"
+    # Consumer's compose_up was never called because the hook failed.
+    assert not any(c[0] == "up" and c[1] == "z2m" for c in calls)
+
+
+def test_run_install_hook_rejects_placeholder_value(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    consumer = _write_installed_app(
+        apps_dir(),
+        "z2m",
+        requires=[{"app": "mosquitto", "on_install": "hooks/x.sh"}],
+    )
+    (apps_dir() / "mosquitto" / "hooks").mkdir()
+    (apps_dir() / "mosquitto" / "hooks" / "x.sh").write_bytes(b"")
+    (consumer / ".env").write_text("")
+    _write_plan(runner.plan_path(), "z2m", ["mosquitto", "z2m"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+    monkeypatch.setattr(dockerops, "compose_exec_script", lambda *a, **k: "MQTT_PASS=changeme\n")
+
+    with pytest.raises(runner.InstallRunnerError, match="placeholder"):
+        runner.run_install("z2m")
+
+
+def test_run_install_hook_failure_skips_consumer_compose_up(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    consumer = _write_installed_app(
+        apps_dir(),
+        "z2m",
+        requires=[{"app": "mosquitto", "on_install": "hooks/x.sh"}],
+    )
+    (apps_dir() / "mosquitto" / "hooks").mkdir()
+    (apps_dir() / "mosquitto" / "hooks" / "x.sh").write_bytes(b"")
+    (consumer / ".env").write_text("")
+    _write_plan(runner.plan_path(), "z2m", ["mosquitto", "z2m"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+
+    def boom(*a, **k):
+        raise dockerops.DockerError("hook returned 1: connection refused")
+
+    monkeypatch.setattr(dockerops, "compose_exec_script", boom)
+
+    with pytest.raises(dockerops.DockerError):
+        runner.run_install("z2m")
+
+    s = runner.read_state()
+    assert s["stage"] == "error"
+    assert s["target"] == "z2m"
+    # The provider's compose_up DID run earlier in the plan.
+    assert ("up", "mosquitto") in calls
+    # But the consumer's never did.
+    assert ("up", "z2m") not in calls
+
+
+def test_run_install_missing_provider_hook_file_raises(runner, monkeypatch):
+    import furtka.dockerops as dockerops
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "mosquitto")
+    consumer = _write_installed_app(
+        apps_dir(),
+        "z2m",
+        requires=[{"app": "mosquitto", "on_install": "hooks/missing.sh"}],
+    )
+    (consumer / ".env").write_text("")
+    _write_plan(runner.plan_path(), "z2m", ["mosquitto", "z2m"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+
+    with pytest.raises(runner.InstallRunnerError, match="missing in provider"):
+        runner.run_install("z2m")
+
+
+def test_run_install_plan_file_is_consumed_after_read(runner, monkeypatch):
+    """After a run, the plan file is removed so a stale plan can't steer the next run."""
+    from furtka.paths import apps_dir
+
+    _write_installed_app(apps_dir(), "fileshare")
+    _write_plan(runner.plan_path(), "fileshare", ["fileshare"])
+
+    calls: list = []
+    _stub_docker_ops(monkeypatch, calls)
+    runner.run_install("fileshare")
+    assert not runner.plan_path().exists()
+
+
+# --- _parse_hook_output (unit) -----------------------------------------------
+
+
+def test_parse_hook_output_kv_only(runner):
+    out = runner._parse_hook_output("MQTT_USER=z2m\nMQTT_PASS=hunter2\n")
+    assert out == {"MQTT_USER": "z2m", "MQTT_PASS": "hunter2"}
+
+
+def test_parse_hook_output_rejects_lowercase_key(runner):
+    with pytest.raises(runner.InstallRunnerError, match="UPPER_SNAKE_CASE"):
+        runner._parse_hook_output("lowercase=oops\n")
+
+
+def test_parse_hook_output_furtka_json(runner):
+    out = runner._parse_hook_output('FURTKA_JSON: {"FOO": "bar", "BAZ": "qux"}\n')
+    assert out == {"FOO": "bar", "BAZ": "qux"}
+
+
+def test_parse_hook_output_furtka_json_rejects_non_string(runner):
+    with pytest.raises(runner.InstallRunnerError, match="must be a string"):
+        runner._parse_hook_output('FURTKA_JSON: {"FOO": 42}\n')
+
+
+def test_parse_hook_output_furtka_json_rejects_bad_payload(runner):
+    with pytest.raises(runner.InstallRunnerError, match="must be an object"):
+        runner._parse_hook_output('FURTKA_JSON: ["not", "a", "dict"]\n')
+
+
+def test_parse_hook_output_furtka_json_invalid_json(runner):
+    with pytest.raises(runner.InstallRunnerError, match="invalid FURTKA_JSON"):
+        runner._parse_hook_output("FURTKA_JSON: {not json}\n")

tests/test_installer.py

@@ -73,6 +73,31 @@ def test_install_from_copies_files(tmp_path, fake_dirs):
     assert (target / ".env").read_text() == "A=1"
 
 
+def test_install_from_copies_subdirectories(tmp_path, fake_dirs):
+    # Dependency hooks live under scripts/ — the whole subtree must be copied,
+    # not just top-level files, or providers ship without their hooks.
+    src = _write_app_source(tmp_path, "mosquitto", VALID_MANIFEST, env_example="A=1")
+    scripts = src / "scripts"
+    scripts.mkdir()
+    (scripts / "provision-client.sh").write_text("#!/bin/sh\necho hi\n")
+    target = installer.install_from(src)
+    assert (target / "scripts" / "provision-client.sh").read_text() == "#!/bin/sh\necho hi\n"
+
+
+def test_install_from_reinstall_drops_stale_subdir_files(tmp_path, fake_dirs):
+    # A reinstall whose source renamed/removed a hook must not leave the old one.
+    src = _write_app_source(tmp_path, "mosquitto", VALID_MANIFEST, env_example="A=1")
+    scripts = src / "scripts"
+    scripts.mkdir()
+    (scripts / "old-hook.sh").write_text("old\n")
+    installer.install_from(src)
+    (scripts / "old-hook.sh").unlink()
+    (scripts / "new-hook.sh").write_text("new\n")
+    target = installer.install_from(src)
+    assert not (target / "scripts" / "old-hook.sh").exists()
+    assert (target / "scripts" / "new-hook.sh").read_text() == "new\n"
+
+
 def test_install_from_preserves_existing_env(tmp_path, fake_dirs):
     src = _write_app_source(tmp_path, "fileshare", VALID_MANIFEST, env_example="A=new")
     target = apps_dir() / "fileshare"
@@ -355,3 +380,85 @@ def test_update_env_rejects_invalid_path(tmp_path, fake_dirs):
     # Then try to update to a bad path.
     with pytest.raises(installer.InstallError, match="does not exist"):
         installer.update_env("jellyfin", {"MEDIA_PATH": str(tmp_path / "ghost")})
+
+
+# --- parse_env_text ----------------------------------------------------------
+
+
+def test_parse_env_text_basic():
+    from furtka.installer import parse_env_text
+
+    out = parse_env_text("A=1\nB=two\n#comment\n\nC=three=four\n")
+    assert out == {"A": "1", "B": "two", "C": "three=four"}
+
+
+def test_parse_env_text_handles_quoted_values():
+    from furtka.installer import parse_env_text
+
+    out = parse_env_text('A="has space"\nB=\'plain\'\nC="quote \\"inside\\""\n')
+    assert out == {"A": "has space", "B": "plain", "C": 'quote "inside"'}
+
+
+def test_parse_env_text_ignores_malformed_lines():
+    from furtka.installer import parse_env_text
+
+    out = parse_env_text("no-equals-sign\n=missing-key\nGOOD=ok\n")
+    assert out == {"GOOD": "ok", "": "missing-key"}
+
+
+# --- install_plan driver -----------------------------------------------------
+
+
+def test_install_plan_calls_install_from_in_order(tmp_path, fake_dirs, monkeypatch):
+    from furtka.deps import DepPlan
+
+    calls: list[tuple[str, dict | None]] = []
+
+    def fake_resolve(name):
+        return tmp_path / "src" / name
+
+    def fake_install_from(src, settings=None):
+        calls.append((src.name, settings))
+        return apps_dir() / src.name
+
+    monkeypatch.setattr(installer, "resolve_source", fake_resolve)
+    monkeypatch.setattr(installer, "install_from", fake_install_from)
+
+    plan = DepPlan(
+        target="a",
+        install_order=("c", "b", "a"),
+        already_installed=frozenset(),
+        to_install=("c", "b", "a"),
+    )
+    out = installer.install_plan(plan, settings_target={"K": "v"})
+    assert [name for name, _ in calls] == ["c", "b", "a"]
+    # Only the target receives settings.
+    assert calls[0] == ("c", None)
+    assert calls[1] == ("b", None)
+    assert calls[2] == ("a", {"K": "v"})
+    assert [p.name for p in out] == ["c", "b", "a"]
+
+
+def test_install_plan_skips_already_installed(tmp_path, fake_dirs, monkeypatch):
+    from furtka.deps import DepPlan
+
+    calls: list[str] = []
+
+    def fake_resolve(name):
+        return tmp_path / "src" / name
+
+    def fake_install_from(src, settings=None):
+        calls.append(src.name)
+        return apps_dir() / src.name
+
+    monkeypatch.setattr(installer, "resolve_source", fake_resolve)
+    monkeypatch.setattr(installer, "install_from", fake_install_from)
+
+    plan = DepPlan(
+        target="a",
+        install_order=("b", "a"),
+        already_installed=frozenset({"b"}),
+        to_install=("a",),
+    )
+    installer.install_plan(plan)
+    assert calls == ["a"]

tests/test_manifest.py

@@ -191,3 +191,104 @@ def test_settings_non_list_rejected(tmp_path):
     path = _write_app(tmp_path, "fileshare", bad)
     with pytest.raises(ManifestError, match="settings must be a list"):
         load_manifest(path)
+
+
+def test_requires_optional_default_empty(tmp_path):
+    path = _write_app(tmp_path, "fileshare", VALID_MANIFEST)
+    m = load_manifest(path)
+    assert m.requires == ()
+
+
+def test_requires_parsed_full_entry(tmp_path):
+    payload = dict(
+        VALID_MANIFEST,
+        name="zigbee2mqtt",
+        requires=[
+            {
+                "app": "mosquitto",
+                "on_install": "hooks/create-user.sh",
+                "on_start": "hooks/ensure-user.sh",
+            }
+        ],
+    )
+    path = _write_app(tmp_path, "zigbee2mqtt", payload)
+    m = load_manifest(path)
+    assert len(m.requires) == 1
+    r = m.requires[0]
+    assert r.app == "mosquitto"
+    assert r.on_install == "hooks/create-user.sh"
+    assert r.on_start == "hooks/ensure-user.sh"
+
+
+def test_requires_app_only_no_hooks(tmp_path):
+    payload = dict(VALID_MANIFEST, name="z2m", requires=[{"app": "mosquitto"}])
+    path = _write_app(tmp_path, "z2m", payload)
+    m = load_manifest(path)
+    assert m.requires[0].app == "mosquitto"
+    assert m.requires[0].on_install is None
+    assert m.requires[0].on_start is None
+
+
+def test_requires_rejects_self_reference(tmp_path):
+    payload = dict(VALID_MANIFEST, requires=[{"app": "fileshare"}])
+    path = _write_app(tmp_path, "fileshare", payload)
+    with pytest.raises(ManifestError, match="self-reference"):
+        load_manifest(path)
+
+
+def test_requires_rejects_duplicate_app(tmp_path):
+    payload = dict(
+        VALID_MANIFEST,
+        name="z2m",
+        requires=[{"app": "mosquitto"}, {"app": "mosquitto"}],
+    )
+    path = _write_app(tmp_path, "z2m", payload)
+    with pytest.raises(ManifestError, match="duplicate"):
+        load_manifest(path)
+
+
+def test_requires_rejects_traversal_hook_path(tmp_path):
+    payload = dict(
+        VALID_MANIFEST,
+        name="z2m",
+        requires=[{"app": "mosquitto", "on_install": "../../etc/passwd"}],
+    )
+    path = _write_app(tmp_path, "z2m", payload)
+    with pytest.raises(ManifestError, match=r"must not contain '\.\.'"):
+        load_manifest(path)
+
+
+def test_requires_rejects_absolute_hook_path(tmp_path):
+    payload = dict(
+        VALID_MANIFEST,
+        name="z2m",
+        requires=[{"app": "mosquitto", "on_start": "/tmp/hook.sh"}],
+    )
+    path = _write_app(tmp_path, "z2m", payload)
+    with pytest.raises(ManifestError, match="must be relative"):
+        load_manifest(path)
+
+
+def test_requires_non_list_rejected(tmp_path):
+    payload = dict(VALID_MANIFEST, requires={"app": "mosquitto"})
+    path = _write_app(tmp_path, "fileshare", payload)
+    with pytest.raises(ManifestError, match="requires must be a list"):
+        load_manifest(path)
+
+
+def test_requires_rejects_invalid_app_name(tmp_path):
+    payload = dict(VALID_MANIFEST, requires=[{"app": "Bad-Name!"}])
+    path = _write_app(tmp_path, "fileshare", payload)
+    with pytest.raises(ManifestError, match="lowercase app name"):
+        load_manifest(path)
+
+
+def test_requires_rejects_empty_hook_string(tmp_path):
+    payload = dict(
+        VALID_MANIFEST,
+        name="z2m",
+        requires=[{"app": "mosquitto", "on_install": ""}],
+    )
+    path = _write_app(tmp_path, "z2m", payload)
+    with pytest.raises(ManifestError, match="non-empty string"):
+        load_manifest(path)

tests/test_reconciler.py

@@ -133,3 +133,149 @@ def test_reconcile_isolates_missing_docker_binary(tmp_path, monkeypatch):
     error = next(a for a in actions if a.kind == "error")
     assert error.target == "fileshare"
     assert "docker" in error.detail
+
+
+# --- Topo ordering + on_start hooks ----------------------------------------
+
+PROVIDER_MANIFEST = dict(
+    VALID_MANIFEST,
+    name="mosquitto",
+    volumes=["data"],
+)
+
+CONSUMER_MANIFEST = dict(
+    VALID_MANIFEST,
+    name="zigbee2mqtt",
+    volumes=["state"],
+    requires=[
+        {
+            "app": "mosquitto",
+            "on_start": "hooks/ensure-user.sh",
+        }
+    ],
+)
+
+
+def test_reconcile_topo_orders_providers_before_consumers(tmp_path, fake_docker, monkeypatch):
+    # Consumer comes alphabetically AFTER provider here, but the explicit dep
+    # also needs to win when the order was reversed. Add an alpha-first
+    # consumer name to make this load-bearing.
+    consumer = dict(CONSUMER_MANIFEST, name="alpha", requires=[{"app": "mosquitto"}])
+    _make_app(tmp_path, "mosquitto", PROVIDER_MANIFEST)
+    _make_app(tmp_path, "alpha", consumer)
+    reconciler.reconcile(tmp_path)
+    up_order = [project for _, project in fake_docker["compose_up"]]
+    assert up_order == ["mosquitto", "alpha"]
+
+
+def test_reconcile_fires_on_start_before_compose_up(tmp_path, fake_docker, monkeypatch):
+    provider = _make_app(tmp_path, "mosquitto", PROVIDER_MANIFEST)
+    (provider / "hooks").mkdir()
+    (provider / "hooks" / "ensure-user.sh").write_bytes(b"#!/bin/sh\necho ok\n")
+    _make_app(tmp_path, "zigbee2mqtt", CONSUMER_MANIFEST)
+
+    hook_calls: list[str] = []
+
+    def fake_exec_script(app_dir, project, service, script_path, *, env, timeout):
+        hook_calls.append(f"{project}:{script_path.name}")
+        return ""
+
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+    monkeypatch.setattr(dockerops, "compose_exec_script", fake_exec_script)
+
+    actions = reconciler.reconcile(tmp_path)
+
+    # Hook fired against mosquitto exactly once.
+    assert hook_calls == ["mosquitto:ensure-user.sh"]
+    # Hook action appears before consumer's compose_up.
+    kinds = [(a.kind, a.target) for a in actions]
+    hook_idx = kinds.index(("hook", "zigbee2mqtt:mosquitto:on_start"))
+    up_idx = kinds.index(("compose_up", "zigbee2mqtt"))
+    assert hook_idx < up_idx
+    # And the provider's compose_up happened first.
+    assert fake_docker["compose_up"][0][1] == "mosquitto"
+
+
+def test_reconcile_on_start_hook_receives_consumer_env(tmp_path, fake_docker, monkeypatch):
+    # The on_start hook must be able to re-establish provider state with the
+    # SAME credentials the consumer already holds, so the consumer's stored
+    # .env is injected (namespaced) alongside FURTKA_CONSUMER_APP/_VERSION.
+    provider = _make_app(tmp_path, "mosquitto", PROVIDER_MANIFEST)
+    (provider / "hooks").mkdir()
+    (provider / "hooks" / "ensure-user.sh").write_bytes(b"#!/bin/sh\n")
+    consumer = _make_app(tmp_path, "zigbee2mqtt", CONSUMER_MANIFEST)
+    # A real, stored credential plus a junk lowercase key that must be dropped.
+    (consumer / ".env").write_text("MQTT_PASS=s3cret-from-install\nnot_a_setting=x\n")
+
+    seen_env: dict[str, str] = {}
+
+    def fake_exec_script(app_dir, project, service, script_path, *, env, timeout):
+        seen_env.update(env)
+        return ""
+
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+    monkeypatch.setattr(dockerops, "compose_exec_script", fake_exec_script)
+
+    reconciler.reconcile(tmp_path)
+
+    assert seen_env["FURTKA_CONSUMER_APP"] == "zigbee2mqtt"
+    assert seen_env["FURTKA_CONSUMER_ENV_MQTT_PASS"] == "s3cret-from-install"
+    # Lowercase / non-UPPER_SNAKE keys are not exported.
+    assert not any(k.endswith("not_a_setting") for k in seen_env)
+
+
+def test_reconcile_on_start_failure_skips_consumer_compose_up(tmp_path, fake_docker, monkeypatch):
+    provider = _make_app(tmp_path, "mosquitto", PROVIDER_MANIFEST)
+    (provider / "hooks").mkdir()
+    (provider / "hooks" / "ensure-user.sh").write_bytes(b"")
+    _make_app(tmp_path, "zigbee2mqtt", CONSUMER_MANIFEST)
+    # Unrelated third app: must still come up despite the consumer's hook fail.
+    _make_app(tmp_path, "lonely", dict(VALID_MANIFEST, name="lonely", volumes=["data"]))
+
+    def boom(*a, **k):
+        raise dockerops.DockerError("hook returned 1")
+
+    monkeypatch.setattr(dockerops, "compose_image_tags", lambda a, p: {"mosquitto": "img"})
+    monkeypatch.setattr(dockerops, "compose_exec_script", boom)
+
+    actions = reconciler.reconcile(tmp_path)
+    assert reconciler.has_errors(actions)
+
+    error_actions = [a for a in actions if a.kind == "error"]
+    assert len(error_actions) == 1
+    assert error_actions[0].target == "zigbee2mqtt"
+    assert "on_start(mosquitto)" in error_actions[0].detail
+
+    # Provider AND unrelated app came up; consumer did NOT.
+    up_projects = {p for _, p in fake_docker["compose_up"]}
+    assert "mosquitto" in up_projects
+    assert "lonely" in up_projects
+    assert "zigbee2mqtt" not in up_projects
+
+
+def test_reconcile_dry_run_emits_hook_action_without_executing(tmp_path, fake_docker, monkeypatch):
+    provider = _make_app(tmp_path, "mosquitto", PROVIDER_MANIFEST)
+    (provider / "hooks").mkdir()
+    (provider / "hooks" / "ensure-user.sh").write_bytes(b"")
+    _make_app(tmp_path, "zigbee2mqtt", CONSUMER_MANIFEST)
+
+    called = []
+    monkeypatch.setattr(dockerops, "compose_exec_script", lambda *a, **k: called.append(1) or "")
+    actions = reconciler.reconcile(tmp_path, dry_run=True)
+    assert called == []
+    hook_actions = [a for a in actions if a.kind == "hook"]
+    assert any(a.target == "zigbee2mqtt:mosquitto:on_start" for a in hook_actions)
+
+
+def test_reconcile_missing_provider_still_isolated(tmp_path, fake_docker, monkeypatch):
+    """Consumer requires an app that isn't installed — per-app error, others continue."""
+    _make_app(tmp_path, "zigbee2mqtt", CONSUMER_MANIFEST)
+    _make_app(tmp_path, "lonely", dict(VALID_MANIFEST, name="lonely", volumes=["data"]))
+
+    actions = reconciler.reconcile(tmp_path)
+    assert reconciler.has_errors(actions)
+    errors = [a for a in actions if a.kind == "error"]
+    assert len(errors) == 1
+    assert errors[0].target == "zigbee2mqtt"
+    # `lonely` still got its compose_up.
+    assert any(p == "lonely" for _, p in fake_docker["compose_up"])

tests/test_updater.py

@@ -316,14 +316,17 @@ def test_link_new_units_only_links_missing(updater, tmp_path, monkeypatch):
 
     linked = updater._link_new_units(unit_dir)
     assert linked == ["furtka-bar.timer"]
-    # Two calls for the newly-linked timer: systemctl link + systemctl enable.
-    # The already-linked service is untouched. Timers need the follow-up
-    # `enable` so self-updates that introduce new timers don't leave them
-    # dormant — fresh installs get their enable via the webinstaller.
-    assert len(seen) == 2
+    # Three calls for the newly-linked timer: link + enable + start. The
+    # already-linked service is untouched. `enable` alone only arms the
+    # timer for the next boot; `start` makes it fire on the running box
+    # (26.20 left furtka-welcome.timer dead until reboot without it).
+    assert len(seen) == 3
     assert seen[0][:2] == ["systemctl", "link"]
-    assert seen[0][2].endswith("furtka-bar.timer")
+    # Linked via the `current` symlink, not the versioned dir being scanned,
+    # so the link survives the next symlink flip / rollback.
+    assert seen[0][2] == str(updater.current_symlink() / "assets" / "systemd" / "furtka-bar.timer")
     assert seen[1] == ["systemctl", "enable", "furtka-bar.timer"]
+    assert seen[2] == ["systemctl", "start", "furtka-bar.timer"]
 
 
 def test_extract_tarball_uses_data_filter_when_available(tmp_path, updater, monkeypatch):

tests/test_webinstaller_assets.py

@@ -227,6 +227,25 @@ def test_systemd_units_reference_current_paths():
         )
 
 
+def test_welcome_banner_is_timer_driven():
+    """The console banner must keep refreshing so the IP fallback is always
+    on screen. A oneshot with RemainAfterExit=yes never re-runs from a timer
+    (the unit stays 'active'), and a network-online dependency would delay the
+    first paint — both regressions the hardware bench hit in 26.19."""
+    timer = (ASSETS / "systemd" / "furtka-welcome.timer").read_text()
+    assert "OnUnitActiveSec=" in timer
+    assert "furtka-welcome.timer" in app._FURTKA_UNITS
+    service = (ASSETS / "systemd" / "furtka-welcome.service").read_text()
+    assert "RemainAfterExit" not in service
+    assert "network-online.target" not in service
+
+
+def test_welcome_banner_always_prints_fallback_line():
+    script = (ASSETS / "bin" / "furtka-welcome").read_text()
+    assert "no IP address yet" in script
+    assert "fallback" in script
+
+
 def test_read_asset_raises_for_missing_file():
     with pytest.raises(FileNotFoundError):
         app._read_asset("does/not/exist.html")
@@ -259,3 +278,12 @@ def test_post_install_writes_users_json_with_hashed_password(install_cmds):
     # Hash is a real werkzeug hash, not the plaintext password.
     assert parsed["admin"]["hash"] != "test-admin-pw"
     assert check_password_hash(parsed["admin"]["hash"], "test-admin-pw")
+
+
+def test_catalog_sync_service_retries_on_failure():
+    """First sync at boot can race DHCPv4 (IPv6 makes network-online fire
+    early); the unit must retry rather than wait for the daily timer."""
+    body = (ASSETS / "systemd" / "furtka-catalog-sync.service").read_text()
+    assert "Restart=on-failure" in body
+    assert "RestartSec=" in body
+    assert "StartLimitBurst=" in body

webinstaller/app.py

@@ -11,6 +11,7 @@ import sys
 from datetime import UTC
 from pathlib import Path
 
+from diskprep import release_disk
 from drives import list_scored_devices
 from flask import Flask, jsonify, redirect, render_template, request, url_for
 
@@ -96,6 +97,16 @@ PROGRESS_PHASES = [
 
 PROGRESS_ERROR_MARKERS = ("Traceback (most recent call last)", "archinstall: error:")
 
+# Known failure signatures → a phase label that tells the user what to do
+# instead of a bare "open Show details". Checked in order; first hit wins.
+PROGRESS_ERROR_HINTS = [
+    (
+        "unable to inform the kernel of the change",
+        "Installation failed — the disk was still in use (old LVM/RAID/swap "
+        "from a previous system). Reboot the installer and try again",
+    ),
+]
+
 
 def parse_install_progress(log):
     percent = 2
@@ -110,6 +121,10 @@ def parse_install_progress(log):
     elif any(m in log for m in PROGRESS_ERROR_MARKERS):
         status = "error"
         phase = "Installation failed — open Show details below"
+        for marker, hint in PROGRESS_ERROR_HINTS:
+            if marker in log:
+                phase = hint
+                break
     else:
         status = "running"
 
@@ -264,6 +279,9 @@ _FURTKA_UNITS = (
     "furtka-status.service",
     "furtka-status.timer",
     "furtka-welcome.service",
+    # Re-runs the welcome banner every few seconds so the console always
+    # shows the current IP fallback (or a "no IP yet" hint).
+    "furtka-welcome.timer",
     # Daily apps-catalog pull. Timer drives the service; the .service itself
     # is oneshot and also callable ad-hoc via `furtka catalog sync`.
     "furtka-catalog-sync.service",
@@ -478,7 +496,7 @@ def build_archinstall_config(s):
             "docker",
             # Base OS post-install services. Only packaged units go here —
             # archinstall runs `systemctl enable` on this list *before*
-            # custom_commands, so our own furtka-welcome + furtka-status.timer
+            # custom_commands, so our own furtka-welcome.timer + furtka-status.timer
             # units (written in custom_commands) are enabled there instead.
             "caddy",
             "avahi-daemon",
@@ -534,7 +552,9 @@ def write_install_files(s, state_dir):
 
 
 def spawn_archinstall(config_path, creds_path, log_path):
-    log_fh = open(log_path, "wb")
+    # Append: install_run() already truncated the log and may have written
+    # the disk-release lines we want to keep visible above archinstall's own.
+    log_fh = open(log_path, "ab")
     return subprocess.Popen(
         [
             "archinstall",
@@ -606,6 +626,11 @@ def install_run():
             f"--creds {creds_path} --silent\n"
         )
     else:
+        # Free the target disk first: udev auto-activates old LVM/RAID/swap
+        # on the live ISO, and archinstall can't re-read a partition table
+        # while those hold the partitions open (first hardware bench, 26.19).
+        with INSTALL_LOG.open("a") as fh:
+            fh.write("\n".join(release_disk(settings["boot_drive"])) + "\n\n")
         spawn_archinstall(config_path, creds_path, INSTALL_LOG)
     return redirect(url_for("install_log_view"))
 
@@ -617,6 +642,7 @@ def install_log_view():
         "install/log.html",
         log=log,
         progress=parse_install_progress(log),
+        hostname=settings["hostname"],
     )
 
 

webinstaller/diskprep.py

@@ -0,0 +1,125 @@
+"""Release a target disk before handing it to archinstall.
+
+The live ISO ships lvm2, mdadm, dmraid and cryptsetup (releng defaults), and
+udev happily auto-activates whatever it finds on attached disks at boot. A
+drive that used to live in another machine — the first hardware bench had an
+old Proxmox VE install on its SSD — therefore comes up with device-mapper
+volumes (or swap, or md arrays) stacked on top of its partitions. archinstall
+then writes the new partition table fine but `BLKRRPART` fails with
+
+    Partition(s) 2, 3 on /dev/sda have been written, but we have been unable
+    to inform the kernel of the change, probably because it/they are in use.
+
+and the install dies at 12 %. Nothing on a fresh VM ever triggers this,
+which is why it survived every smoke run.
+
+`release_disk()` tears that stack down leaves-first (swapoff, umount, dmsetup
+remove / mdadm --stop), wipes signatures and asks the kernel to re-read the
+partition table. Every step is logged so the install log shows what was
+done. All commands are best-effort: the point is to leave archinstall a
+disk the kernel can re-partition, not to be a full disk-management tool.
+"""
+
+import re
+import subprocess
+
+_PAIR_RE = re.compile(r'(\w+)="([^"]*)"')
+
+
+def _run(cmd, run):
+    try:
+        result = run(cmd, capture_output=True, text=True)
+    except FileNotFoundError:
+        return 127, f"{cmd[0]}: command not found"
+    out = ((result.stdout or "") + (result.stderr or "")).strip()
+    return result.returncode, out
+
+
+def _parse_pairs(output):
+    """Parse `lsblk -P` key="value" lines into dicts."""
+    rows = []
+    for line in output.splitlines():
+        row = {}
+        for match in _PAIR_RE.finditer(line):
+            row[match.group(1)] = match.group(2)
+        if row.get("NAME"):
+            rows.append(row)
+    return rows
+
+
+def _children(disk, run):
+    """Everything stacked on `disk`, in lsblk tree order, disk itself excluded."""
+    rc, out = _run(["lsblk", "-lnP", "-o", "NAME,TYPE,MOUNTPOINTS", disk], run)
+    if rc != 0:
+        return []
+    rows = _parse_pairs(out)
+    seen = set()
+    children = []
+    for row in rows:
+        if row.get("TYPE") == "disk" or row["NAME"] in seen:
+            continue
+        seen.add(row["NAME"])
+        children.append(row)
+    return children
+
+
+def release_disk(disk, run=subprocess.run):
+    """Free `disk` (e.g. "/dev/sda") of anything that would block a
+    partition-table reload. Returns the log lines describing what happened."""
+    if not disk.startswith("/dev/"):
+        disk = f"/dev/{disk}"
+    lines = [f"Releasing {disk} before install…"]
+
+    children = _children(disk, run)
+    if not children:
+        lines.append("  nothing stacked on the disk — good.")
+    else:
+        lines.append("  found: " + ", ".join(f"{c['NAME']} ({c['TYPE']})" for c in children))
+
+    # Leaves first: mountpoints and swap sit on the outermost devices.
+    for child in reversed(children):
+        dev = f"/dev/{child['NAME']}"
+        mounts = child.get("MOUNTPOINTS", "")
+        if "[SWAP]" in mounts:
+            rc, out = _run(["swapoff", dev], run)
+            lines.append(f"  swapoff {dev}: {'ok' if rc == 0 else out}")
+        elif mounts:
+            rc, out = _run(["umount", "--all-targets", dev], run)
+            lines.append(f"  umount {dev}: {'ok' if rc == 0 else out}")
+
+    # Device-mapper (LVM, thin pools, LUKS) and md stacks. Thin pools need
+    # their thin LVs gone before the pool goes, and lsblk lists shared nodes
+    # more than once, so go leaves-first and retry a couple of passes until
+    # nothing dm/md-shaped is left.
+    for _ in range(3):
+        stacked = [c for c in reversed(_children(disk, run)) if c["TYPE"] != "part"]
+        if not stacked:
+            break
+        for child in stacked:
+            name, typ = child["NAME"], child["TYPE"]
+            if typ.startswith("raid") or name.startswith("md"):
+                cmd = ["mdadm", "--stop", f"/dev/{name}"]
+            else:
+                cmd = ["dmsetup", "remove", name]
+            rc, out = _run(cmd, run)
+            lines.append(f"  {' '.join(cmd)}: {'ok' if rc == 0 else out}")
+
+    leftovers = [c["NAME"] for c in _children(disk, run) if c["TYPE"] != "part"]
+    if leftovers:
+        lines.append(
+            "  WARNING: still in use after cleanup: "
+            + ", ".join(leftovers)
+            + " — the install may fail to re-read the partition table."
+        )
+
+    # Old signatures (LVM PV headers, RAID superblocks) would otherwise be
+    # re-activated by udev the moment the kernel re-reads the table.
+    for child in reversed(_children(disk, run)):
+        if child["TYPE"] == "part":
+            rc, out = _run(["wipefs", "-a", f"/dev/{child['NAME']}"], run)
+            lines.append(f"  wipefs /dev/{child['NAME']}: {'ok' if rc == 0 else out}")
+    rc, out = _run(["wipefs", "-a", disk], run)
+    lines.append(f"  wipefs {disk}: {'ok' if rc == 0 else out}")
+    rc, out = _run(["blockdev", "--rereadpt", disk], run)
+    lines.append(f"  re-read partition table: {'ok' if rc == 0 else out}")
+    return lines

webinstaller/static/style.css

@@ -421,3 +421,11 @@ select:focus {
   outline-offset: 3px;
   border-radius: 2px;
 }
+
+/* "Furtka is ready" — the two steps before the restart button (log.html). */
+.next-steps {
+  margin: 1.5rem 0 1rem;
+  padding-left: 1.4rem;
+  line-height: 1.5;
+}
+.next-steps li { margin-bottom: 0.6rem; }

webinstaller/templates/install/log.html

@@ -17,16 +17,25 @@
 {% else %}Installing Furtka{% endif %}
 </h1>
 <p class="lede" id="install-lede">
-{% if progress.status == "done" %}Installation finished. <strong>Remove the installer USB / eject the ISO</strong>, then click Reboot.
+{% if progress.status == "done" %}Installation finished. Two more steps and Furtka is running from its own disk.
 {% elif progress.status == "error" %}Something went wrong. Open the details below and share them so we can help.
 {% else %}This takes a few minutes. Don't close this page or power off the machine.{% endif %}
 </p>
 
 {% if progress.status == "done" %}
+{# The USB-stick step has to be read *before* the click: the machine reboots
+   3 s after it, and most BIOSes boot the stick before the disk — so the
+   installer would just come back. Seen on the first hardware bench. #}
+<ol class="next-steps">
+    <li><strong>Pull out the USB stick</strong> (or eject the installer ISO in your VM).
+        If it stays in, the computer will start this installer again instead of Furtka.</li>
+    <li>Click the button below. The computer restarts and comes back as
+        <strong>http://{{ hostname }}.local</strong> in about a minute.</li>
+</ol>
 <form method="post" action="{{ url_for('install_reboot') }}"
-      onsubmit="return confirm('Have you removed the installer USB / ejected the ISO? Click OK to reboot.');">
+      onsubmit="return confirm('USB stick removed? Click OK to restart the computer.');">
     <div class="actions">
-        <button type="submit" class="btn btn-primary">Reboot now</button>
+        <button type="submit" class="btn btn-primary">USB stick is out — restart now</button>
     </div>
 </form>
 {% endif %}

website/README.md

@@ -42,6 +42,15 @@ This rsyncs `website/` to `/srv/furtka-site/` on the VM over SSH and runs
 `hugo --minify` into `/var/www/furtka.org`. Same end state as the CI path,
 just with an SSH hop.
 
+### Poll counter
+
+`/api/poll/` is a tiny stdlib Python service (`ops/poll/pollsvc.py`,
+SQLite, systemd `DynamicUser`) behind nginx on `127.0.0.1:8090`. Install or
+update it on the VM with `sudo ops/poll/setup-poll.sh`; the nginx location
+and rate limit come from `ops/nginx/` via `setup-vm.sh`. Devices are told
+apart by a salted hash of IP + user agent — no cookie — and a repeat vote
+from the same device changes the choice instead of adding one.
+
 ### First-time VM setup
 
 Only needed once, when provisioning a fresh forge-runner VM:
@@ -58,11 +67,18 @@ hugo.toml            Hugo config (multilingual: en default, de)
 content/             Markdown pages
   _index.md          Home (EN)
   _index.de.md       Home (DE)
+  logo.md / .de.md   Logo poll (/logo/, /de/logo/) — layout `poll`, votes via /api/poll/
 layouts/             Custom inline theme — no external theme or framework
   _default/          baseof, single, list
-  partials/          head, header, footer, gate SVG, lang switcher
+  partials/          head, header, footer, gate SVG, lang switcher, mark-m / mark-r (poll)
+  poll/single.html   Logo poll page; strings come from the content front matter
   index.html         Home-only layout with editorial hero
 assets/css/main.css  Stylesheet (fingerprinted + minified on build)
+assets/js/poll.js    Vote script for /logo/ — plain fetch, no cookies, no storage
+data/logo/{m,r}.json Generated: mark SVGs, lockups, 16 px icons, console banner per proposal
+static/img/logo/     Generated: tiles, splash and social card per proposal
+tools/logo-assets.py Generator for the two lines above (cairosvg + Pillow + fontTools);
+                     run on the dev box, commit the output. Font: tools/FONT-PROVENANCE.md
 static/favicon.svg   Gate mark in crimson
 deploy.sh            Manual rsync + remote Hugo build (over SSH, for off-CI pushes)
 deploy-ci.sh         Local rsync + Hugo build — runs on forge-runner-01 from CI

website/assets/css/main.css

@@ -439,3 +439,132 @@ main.container {
     will-change: auto;
   }
 }
+
+/* ── Logo poll ───────────────────────────────────────────────── */
+
+.poll-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
+  gap: 1.5rem;
+  margin-top: 2.5rem;
+}
+.poll-card {
+  display: flex;
+  flex-direction: column;
+  gap: 0.9rem;
+  padding: 1.4rem;
+  border: 1px solid var(--card-border);
+  border-radius: 1rem;
+  background: var(--card-bg);
+  transition: border-color 160ms, box-shadow 160ms;
+}
+.is-yours { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
+.poll-card h2 { margin: 0; font-size: 1.25rem; letter-spacing: -0.01em; }
+.poll-desc { margin: 0; color: var(--fg-muted); font-size: 0.95rem; }
+.poll-art { display: grid; place-items: center; padding: 2.2rem 1rem; border-radius: 0.75rem; }
+.poll-art--m { background: var(--bg-subtle); }
+.poll-art--r { background: #151515; }
+.poll-art .pm { height: 9rem; width: auto; }
+.pm { display: block; }
+.poll-btn {
+  margin-top: auto;
+  padding: 0.85rem 1.2rem;
+  border: 1px solid var(--accent);
+  border-radius: 0.6rem;
+  background: var(--accent);
+  color: #fff;
+  font: inherit;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background 140ms, transform 140ms;
+}
+.poll-btn:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); }
+.poll-btn:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }
+.poll-btn:disabled { cursor: default; opacity: 0.85; }
+.is-yours .poll-btn { background: transparent; color: var(--accent); }
+.poll-bar { height: 0.45rem; border-radius: 999px; background: var(--bg-subtle); overflow: hidden; display: none; }
+.poll-bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 500ms ease; }
+.poll--voted .poll-bar { display: block; }
+.poll-count { margin: 0; min-height: 1.4em; font-size: 0.85rem; color: var(--fg-muted); font-variant-numeric: tabular-nums; }
+.poll-status { margin: 1.25rem 0 0; min-height: 1.5em; color: var(--fg-muted); }
+.poll-note { margin-top: 1rem; max-width: var(--measure); font-size: 0.85rem; color: var(--fg-muted); }
+.poll-note a { color: var(--accent); }
+
+/* showcase */
+.show { display: flex; flex-direction: column; gap: 3rem; margin-top: 4rem; }
+.show-intro { margin: 0; }
+.show-row { display: flex; flex-direction: column; gap: 0.6rem; }
+.show-h { margin: 0; font-size: 1.35rem; letter-spacing: -0.01em; }
+.show-p { margin: 0 0 0.6rem; max-width: var(--measure); color: var(--fg-muted); font-size: 0.95rem; }
+.show-pair { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1.25rem; }
+.show-cell {
+  display: flex; flex-direction: column; gap: 0.9rem;
+  padding: 1.1rem; border: 1px solid var(--card-border); border-radius: 0.9rem; background: var(--card-bg);
+}
+.show-cell--m { color: var(--accent); }
+.show-cell--r { color: #af6428; }
+.show-tag { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted); }
+.sizes { display: flex; align-items: flex-end; gap: 1.1rem; flex-wrap: wrap; }
+.sizes figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 0.35rem; }
+.sizes figcaption { font-family: var(--font-mono); font-size: 0.65rem; color: var(--fg-muted); }
+.sz { display: block; }
+.sz .pm { width: auto; }
+.sz-96 .pm { height: 96px; } .sz-48 .pm { height: 48px; } .sz-32 .pm { height: 32px; } .sz-24 .pm { height: 24px; }
+.px { image-rendering: pixelated; }
+.lock { display: grid; place-items: center; padding: 1rem; border-radius: 0.6rem; background: var(--bg-subtle); }
+.lock-h .pm { height: 3rem; width: auto; max-width: 100%; }
+.lock-s .pm { height: 7rem; width: auto; max-width: 100%; }
+.mock { border: 1px solid var(--border); border-radius: 0.7rem; overflow: hidden; background: var(--bg); color: var(--fg); font-size: 0.8rem; }
+.tabbar { background: var(--bg-subtle); padding: 0.55rem 0.65rem; }
+.tab { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.3rem 0.65rem; border: 1px solid var(--border); border-radius: 0.4rem; background: var(--bg); color: var(--fg-muted); }
+.urlbar { padding: 0.45rem 0.75rem; border-top: 1px solid var(--border); font-family: var(--font-mono); font-size: 0.72rem; color: var(--fg-muted); }
+.uihead { display: flex; align-items: center; gap: 0.5rem; padding: 0.8rem 0.9rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
+.uihead-mark { display: inline-flex; color: inherit; }
+.show-cell--m .uihead-mark { color: var(--accent); }
+.show-cell--r .uihead-mark { color: #af6428; }
+.uihead-mark .pm { height: 1.25rem; width: auto; }
+.uihead-name { font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; font-size: 0.72rem; color: var(--fg); }
+.uihead-nav { margin-left: auto; display: flex; gap: 0.7rem; color: var(--fg-muted); }
+.uibody { padding: 0.9rem; display: flex; flex-direction: column; gap: 0.45rem; }
+.uibody i { display: block; height: 0.45rem; border-radius: 3px; background: var(--bg-subtle); }
+.uibody i.s { width: 45%; }
+.tiles { display: flex; gap: 1rem; justify-content: center; padding: 1.2rem; border-radius: 0.6rem; background: var(--bg-subtle); }
+.tiles img { width: 6rem; height: 6rem; }
+.term {
+  margin: 0; padding: 0.9rem 1rem; border-radius: 0.6rem; overflow-x: auto;
+  background: #100f0c; color: #d8d2c2; font-family: var(--font-mono); font-size: 0.55rem; line-height: 1;
+  -webkit-text-size-adjust: none; text-size-adjust: none;
+}
+.term i, .term b { font-style: normal; font-weight: 400; color: inherit; }
+.show-cell--m .term i { color: #ff6b56; } .show-cell--m .term b { color: #ff6b56; }
+.show-cell--r .term i { color: #c9803f; } .show-cell--r .term b { color: #c9803f; }
+.shot { display: block; width: 100%; height: auto; border-radius: 0.6rem; }
+.grounds { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem; }
+.ground { display: grid; place-items: center; padding: 1.2rem; border-radius: 0.6rem; border: 1px solid var(--border); }
+.ground--fg { background: var(--bg-subtle); color: var(--fg); }
+.ground .pm { height: 3.2rem; width: auto; }
+.poll-final { margin-top: 3.5rem; display: flex; flex-direction: column; gap: 1rem; }
+.poll-final-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1.25rem; }
+.poll-final-card {
+  display: flex; flex-direction: column; gap: 0.8rem; align-items: stretch;
+  padding: 1.1rem; border: 1px solid var(--card-border); border-radius: 0.9rem; background: var(--card-bg);
+}
+.poll-final-mark { display: grid; place-items: center; padding: 0.8rem; }
+.poll-final-mark .pm { height: 3.5rem; width: auto; }
+.home-poll {
+  display: inline-flex; align-items: center; gap: 0.6rem; margin-top: 1.4rem;
+  padding: 0.55rem 0.95rem; border: 1px solid var(--border); border-radius: 999px;
+  background: var(--card-bg); color: var(--fg); text-decoration: none; font-size: 0.92rem;
+}
+.home-poll:hover { border-color: var(--accent); }
+.home-poll .pm { height: 1.1rem; width: auto; color: var(--accent); }
+.home-poll .pm + .pm { color: #af6428; }
+/* Random left/right per visit — data-logo-order is set in head.html before first paint.
+   Every pair container is a grid/flex, so `order` swaps the columns without touching the DOM. */
+[data-logo-order="rm"] .poll-card[data-choice="m"],
+[data-logo-order="rm"] .show-cell.show-cell--m,
+[data-logo-order="rm"] .poll-final-card[data-choice="m"],
+[data-logo-order="mr"] .poll-card[data-choice="r"],
+[data-logo-order="mr"] .show-cell.show-cell--r,
+[data-logo-order="mr"] .poll-final-card[data-choice="r"] { order: 1; }
+@media (prefers-reduced-motion: reduce) { .poll-bar i, .poll-btn { transition: none; } }

website/assets/js/poll.js

@@ -0,0 +1,59 @@
+// furtka.org logo poll — no cookies, no storage. The server tells us
+// what this device already chose (salted hash of IP + user agent).
+(function () {
+  var root = document.querySelector('.poll');
+  if (!root || !window.fetch) return;
+  var api = root.dataset.api;
+  var status = root.querySelector('.poll-status');
+  var t = status.dataset;
+  var buttons = root.querySelectorAll('[data-vote]');
+  var busy = false;
+
+  function pct(n, total) { return total ? Math.round((n / total) * 100) : 0; }
+  function each(sel, fn) { Array.prototype.forEach.call(root.querySelectorAll(sel), fn); }
+
+  function render(d) {
+    var total = d.total || 0;
+    root.classList.toggle('poll--voted', !!d.yours);
+    Object.keys(d.counts).forEach(function (k) {
+      var n = d.counts[k], p = pct(n, total), mine = d.yours === k;
+      each('[data-choice="' + k + '"]', function (card) {
+        card.classList.toggle('is-yours', mine);
+        var bar = card.querySelector('.poll-bar i'); if (bar) bar.style.width = p + '%';
+        var c = card.querySelector('[data-count]'); if (c) c.textContent = d.yours ? p + ' % · ' + n : '';
+      });
+      each('[data-vote="' + k + '"]', function (b) {
+        b.disabled = mine;
+        b.textContent = mine ? t.tVoted : (d.yours ? t.tChange : b.dataset.label);
+      });
+    });
+    status.textContent = d.yours ? t.tTotal.replace('{n}', total) : '';
+  }
+
+  function load() {
+    fetch(api, { headers: { Accept: 'application/json' } })
+      .then(function (r) { if (!r.ok) throw r; return r.json(); })
+      .then(render)
+      .catch(function () { status.textContent = t.tError; });
+  }
+
+  Array.prototype.forEach.call(buttons, function (b) {
+    b.dataset.label = b.textContent;
+    b.addEventListener('click', function () {
+      if (busy) return;
+      busy = true; b.disabled = true;
+      fetch(api, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+        body: JSON.stringify({ choice: b.dataset.vote })
+      })
+        .then(function (r) { if (!r.ok) throw r; return r.json(); })
+        .then(function (d) { render(d); status.scrollIntoView({ block: 'nearest' }); })
+        .catch(function () { status.textContent = t.tError; b.disabled = false; })
+        .then(function () { busy = false; });
+    });
+  });
+
+  status.textContent = '';
+  load();
+})();

website/content/_index.de.md

@@ -1,7 +1,9 @@
 ---
 title: "Furtka"
 description: "Offenes Heimserver-Betriebssystem — einfach genug für alle."
-status: "<span class=\"mono\">26.16-alpha</span> — in Arbeit"
+status: "<span class=\"mono\">26.20-alpha</span> — in Arbeit"
+poll_link: "/de/logo/"
+poll_text: "Wir suchen ein Logo — hilf uns beim Aussuchen"
 # features_today / features_next müssen index-parallel zu content/_index.md bleiben.
 intro: |
   **Furtka** ist ein offenes Heimserver-Betriebssystem.
@@ -19,11 +21,15 @@ features_today:
   - "Apps mit einem Klick installieren und entfernen"
   - "Eine installierte App mit einem Klick aktualisieren (holt das neueste Container-Image)"
   - "Furtka selbst mit einem Klick aktualisieren — keine Neuinstallation mehr für neue Features"
+  - "Die Bedienseite fragt nach einem Passwort — niemand im WLAN kommt einfach so rein"
+  - "Neue Apps kommen aus einem Online-Katalog, ohne auf ein Furtka-Update zu warten"
+  - "Apps können auf anderen Apps aufbauen — was eine braucht, wird mit installiert"
+  - "Verschlüsselte Verbindung im Heimnetz, in den Einstellungen einschaltbar"
 features_next_label: "Was als Nächstes kommt"
 features_next:
   - "Apps für Fotos, Dateien, Smarthome, Spiele-Streaming und Medien"
   - "Einfachere Sprache im Einrichtungs-Assistenten"
-  - "Sichere Verbindung im Heimnetz (ohne Warnmeldung im Browser)"
+  - "Den Server auch von unterwegs erreichen"
   - "Mehrere Server zusammenschalten"
 ---
 

website/content/_index.md

@@ -1,7 +1,9 @@
 ---
 title: "Furtka"
 description: "Open-source home server OS — simple enough for everyone."
-status: "<span class=\"mono\">26.16-alpha</span> — work in progress"
+status: "<span class=\"mono\">26.20-alpha</span> — work in progress"
+poll_link: "/logo/"
+poll_text: "We're picking a logo — help us choose"
 # Keep features_today / features_next index-aligned with content/_index.de.md.
 intro: |
   **Furtka** is an open-source home server OS.
@@ -19,11 +21,15 @@ features_today:
   - "Install and remove apps with one click"
   - "Update an installed app with one click (pulls the newest container image)"
   - "Update Furtka itself with one click — no reinstalling for new features"
+  - "The control page asks for a password — nobody on the Wi-Fi can just walk in"
+  - "New apps arrive from an online catalog, without waiting for a Furtka update"
+  - "Apps can build on other apps — what one needs gets installed alongside it"
+  - "Encrypted connection on your home network, switched on in settings"
 features_next_label: "What's coming next"
 features_next:
   - "Apps for photos, files, smart home, game streaming and media"
   - "Plainer language in the setup wizard"
-  - "Secure connection on your home network (no browser warning)"
+  - "Reaching your server from outside the house"
   - "Linking several servers together"
 ---
 

website/content/datenschutz.de.md

@@ -11,7 +11,8 @@ Diese Website setzt **keine Cookies**, lädt **keine Schriften oder
 Skripte von Drittanbietern**, bindet **keine Analyse- oder
 Tracking-Dienste** ein und enthält **keine externen Einbettungen**
 (YouTube, Maps, Social-Media-Buttons, …). Technisch anfallend sind
-ausschließlich kurzfristige Server-Zugriffsprotokolle.
+ausschließlich kurzfristige Server-Zugriffsprotokolle — und, solange die
+[Logo-Abstimmung](/de/logo/) läuft, ein gesalzener Hash pro Stimme (siehe unten).
 
 ### Verantwortlicher
 
@@ -43,6 +44,22 @@ an Betrieb und Sicherheit).
 Infrastruktur; es gibt keinen externen Auftragsverarbeiter.
 **Drittlandübermittlung:** keine.
 
+### Logo-Abstimmung
+
+Auf der Seite [/de/logo/](/de/logo/) können Sie zwischen zwei
+Logo-Vorschlägen abstimmen. Damit jedes Gerät ohne Cookie einmal gezählt
+wird, speichert der Abstimmungsserver einen **gesalzenen SHA-256-Hash aus
+Ihrer IP-Adresse und Browser-Kennung** zusammen mit Ihrer Wahl und dem
+Zeitpunkt der Stimmabgabe. Der Hash lässt sich nicht in die Adresse
+zurückrechnen; das Salt verlässt den Server nicht.
+
+**Zweck:** Zählung je Gerät einmal.
+**Rechtsgrundlage:** Art. 6 Abs. 1 lit. f DSGVO — berechtigtes Interesse
+an einer ehrlichen Auszählung; die Teilnahme ist freiwillig.
+**Speicherdauer:** bis zum Ende der Abstimmung, danach wird die Datenbank
+gelöscht.
+**Empfänger:** keine.
+
 ### Cookies und Tracking
 
 Keine. Es werden keine Cookies gesetzt, kein LocalStorage oder
@@ -75,5 +92,5 @@ Website: <https://www.datenschutz.rlp.de>
 
 ### Stand
 
-Diese Erklärung ist aktuell gültig und wurde zuletzt am 18.04.2026
+Diese Erklärung ist aktuell gültig und wurde zuletzt am 26.08.2026
 aktualisiert.

website/content/datenschutz.md

@@ -11,7 +11,8 @@ sitemap:
 This website sets **no cookies**, loads **no third-party fonts or
 scripts**, embeds **no analytics or tracking services**, and contains
 **no external embeds** (YouTube, Maps, social buttons, …). The only
-technical data collected is short-lived server access logs.
+technical data collected is short-lived server access logs — plus, while
+the [logo poll](/logo/) is running, one salted hash per vote (see below).
 
 ### Controller
 
@@ -43,6 +44,20 @@ and security.
 external processor is involved.
 **Transfers outside the EU/EEA:** none.
 
+### Logo poll
+
+The page [/logo/](/logo/) lets you vote between two logo proposals. So
+that each device is counted once without a cookie, the poll server stores
+a **salted SHA-256 hash of your IP address and browser identification**
+together with your choice and the time of the vote. The hash cannot be
+turned back into the address; the salt never leaves the server.
+
+**Purpose:** counting votes once per device.
+**Legal basis:** Art. 6(1)(f) GDPR — legitimate interest in an honest
+tally; voting is voluntary.
+**Retention:** until the poll is closed, then the database is deleted.
+**Recipients:** none.
+
 ### Cookies and tracking
 
 None. No cookies are set, no localStorage or sessionStorage is used, and
@@ -75,6 +90,6 @@ Website: <https://www.datenschutz.rlp.de>
 
 ### Last updated
 
-This statement was last updated on 2026-04-18.
+This statement was last updated on 2026-08-26.
 
 The German version of this privacy statement is the legally binding one.

website/content/logo.de.md

@@ -0,0 +1,53 @@
+---
+title: "Welches Logo?"
+description: "Zwei Vorschläge für das Furtka-Zeichen. Wähl das, das dir besser gefällt — ein Klick genügt."
+translationKey: "logo"
+layout: single
+type: poll
+poll: logo
+image: /img/logo/vote-card.png
+sitemap:
+  priority: 0.5
+m:
+  short: "M"
+  title: "M — das f im Tor"
+  text: "Ein kleines f, aus einem Rundbogentor ausgestanzt. Der Stamm ist der Torpfosten, die zwei Balken sind die Querriegel."
+r:
+  short: "R"
+  title: "R — Fenster, Rad und F"
+  text: "Ein Bogenfenster mit einem Speichenrad dahinter; in der oberen rechten Scheibe wird die Speiche zum F."
+show:
+  intro: "Noch unentschieden? Hier ist jedes Zeichen überall dort, wo es funktionieren muss."
+  sizes: "Groß und klein"
+  sizes_text: "Vom Poster bis zum 16-Pixel-Symbol im Browser-Tab. Unter 32 Pixeln wechseln beide auf eine vereinfachte Zeichnung — M verliert nichts, R behält Fenster, Kreuz und Nabe."
+  name: "Mit dem Namen"
+  name_text: "Nebeneinander und gestapelt. Die Wortmarke ist bei beiden dieselbe, also entscheidet nur das Zeichen."
+  browser: "Im Browser"
+  browser_text: "Das Tab-Symbol in echter Größe und die Kopfzeile von furtka.org."
+  nav1: "Doku"
+  nav2: "Blog"
+  phone: "Auf dem Handy"
+  phone_text: "Startbildschirm-Symbol — eckig wie auf Android, rund wie manche Launcher es beschneiden."
+  box: "Auf dem Server"
+  box_text: "Der Text-Willkommensbildschirm, den der Server am Monitor zeigt, und der Startbildschirm beim Booten."
+  shared: "Geteilt"
+  shared_text: "Die Vorschaukarte, die erscheint, wenn jemand einen Link zu furtka.org postet."
+  colour: "In Farbe"
+  colour_text: "Auf hell, auf dunkel, auf der eigenen Farbe und in normaler Textfarbe — jedes Zeichen ist eine Form und nimmt die Farbe an, die es umgibt."
+  final: "Genug gesehen?"
+labels:
+  vote: "Dieses hier"
+  voted: "Deine Wahl"
+  change: "Zu diesem wechseln"
+  total: "Bisher {n} Stimmen. Danke!"
+  error: "Die Abstimmung ist gerade nicht erreichbar — bitte gleich noch einmal versuchen."
+  nojs: "Zum Abstimmen wird JavaScript benötigt."
+  note: "Keine Cookies, kein Konto. Damit jedes Gerät einmal zählt, speichert der Server einen gesalzenen Hash aus IP-Adresse und Browser — nicht die Adresse selbst. Details in der <a href=\"/de/datenschutz/\">Datenschutzerklärung</a>."
+---
+
+*Furtka* ist polnisch für die kleine Gartenpforte — die Tür im Zaun, durch
+die man hineinkommt, ohne das große Tor aufzumachen. Beide Zeichen spielen
+damit: das eine zeichnet den Buchstaben ins Tor, das andere schaut durchs
+Tor auf ein Rad. Stimm direkt hier ab — oder scroll erst weiter und sieh
+beide Zeichen überall, wo sie funktionieren müssen, vom Poster bis zum
+winzigen Symbol im Browser-Tab.

website/content/logo.md

@@ -0,0 +1,53 @@
+---
+title: "Which logo?"
+description: "Two proposals for the Furtka mark. Pick the one you like better — it takes one click."
+translationKey: "logo"
+url: /logo/
+layout: single
+type: poll
+poll: logo
+image: /img/logo/vote-card.png
+sitemap:
+  priority: 0.5
+m:
+  short: "M"
+  title: "M — the f in the gate"
+  text: "A lowercase f cut out of an arched gate. The stem is the gate post, the two rails are the crossbars."
+r:
+  short: "R"
+  title: "R — window, wheel and F"
+  text: "An arched window with a wheel of spokes behind it; in the top-right pane the spoke becomes an F."
+show:
+  intro: "Not sure yet? Here is each mark everywhere it would have to work."
+  sizes: "Big and small"
+  sizes_text: "From a poster to the 16-pixel icon in a browser tab. Below 32 pixels both marks switch to a simplified drawing — M drops nothing, R keeps the window, the cross and the hub."
+  name: "With the name"
+  name_text: "Side by side and stacked. The wordmark is the same for both, so only the mark decides."
+  browser: "In the browser"
+  browser_text: "The tab icon at its real size, and the site header of furtka.org."
+  nav1: "Docs"
+  nav2: "Blog"
+  phone: "On the phone"
+  phone_text: "Home-screen icon — square as on Android, round as some launchers cut it."
+  box: "On the box"
+  box_text: "The text-mode welcome screen your server shows on a monitor, and the boot splash."
+  shared: "Shared"
+  shared_text: "The preview card that appears when someone posts a link to furtka.org."
+  colour: "In colour"
+  colour_text: "On light, on dark, on its own colour, and in plain text colour — each mark is one shape and takes whatever colour is around it."
+  final: "Seen enough?"
+labels:
+  vote: "This one"
+  voted: "Your pick"
+  change: "Switch to this one"
+  total: "{n} votes so far. Thank you!"
+  error: "Couldn't reach the poll right now — please try again in a moment."
+  nojs: "Voting needs JavaScript."
+  note: "No cookies, no account. To count each device once, the server keeps a salted hash of your IP address and browser — not the address itself. Details in the <a href=\"/privacy/\">privacy notice</a>."
+---
+
+*Furtka* is Polish for a small garden gate — the little door in the fence
+that lets you in without opening the whole thing. Both marks play with that:
+one draws the letter into the gate, the other looks through the gate at a
+wheel. Vote right here — or scroll on first and see both marks everywhere
+they would have to work, from a poster to the tiny icon in a browser tab.

website/data/logo/m.json

@@ -0,0 +1,12 @@
+{
+ "display": "<svg class=\"pm\" viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><defs><linearGradient id=\"gmd\" x1=\".15\" y1=\"0\" x2=\".7\" y2=\"1\"><stop offset=\"0\" stop-color=\"#d95a45\"/><stop offset=\".55\" stop-color=\"#c03a28\"/><stop offset=\"1\" stop-color=\"#8a2618\"/></linearGradient><clipPath id=\"cmd\" clip-rule=\"evenodd\"><path d=\"M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z\"/></clipPath></defs><path fill=\"url(#gmd)\" fill-rule=\"evenodd\" d=\"M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z\"/><g clip-path=\"url(#cmd)\"><path fill=\"#fff\" opacity=\".14\" d=\"M6 28a26 26 0 0 1 52 0v4.5a26 26 0 0 0-52 0Z\"/></g></svg>",
+ "flat": "<svg class=\"pm\" viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><path fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z\"/></svg>",
+ "min": "<svg class=\"pm\" viewBox=\"0 0 64 64\" aria-hidden=\"true\" focusable=\"false\"><path fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M5 60V27a27 27 0 0 1 54 0v33Z M19.5 60V26A10 10 0 0 1 29.5 16H46v10H32a2.5 2.5 0 0 0-2.5 2.5V32H46v10H29.5v18Z\"/></svg>",
+ "lockup_h": "<svg class=\"pm\" viewBox=\"0 -4 232.44 64.00\" aria-hidden=\"true\" focusable=\"false\"><g transform=\"scale(1.0000) translate(-6 -2)\"><path fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z\"/></g><g fill=\"currentColor\"><path transform=\"translate(68.24 58.00) scale(0.05354 -0.05354)\" d=\"M115 0V494H30V600H115V637Q115 687 132.5 724.0Q150 761 192.0 781.5Q234 802 305 802Q333 802 358 799V695Q344 698 324 698Q287 698 273.5 682.0Q260 666 260 632V600H358V494H260V0Z\"/><path transform=\"translate(87.21 58.00) scale(0.05354 -0.05354)\" d=\"M271 -15Q169 -15 119.0 48.5Q69 112 69 218V600H218V244Q218 179 241.5 143.0Q265 107 316 107Q379 107 413.0 156.0Q447 205 447 276V600H596V0H462V90H438Q423 44 382.5 14.5Q342 -15 271 -15Z\"/><path transform=\"translate(121.45 58.00) scale(0.05354 -0.05354)\" d=\"M76 0V600H211V492H235Q241 521 257.0 547.0Q273 573 307.0 589.5Q341 606 399 606H428V471H387Q301 471 263.0 427.0Q225 383 225 294V0Z\"/><path transform=\"translate(144.17 58.00) scale(0.05354 -0.05354)\" d=\"M162 0Q139 27 125.5 65.0Q112 103 112 179V494H30V600H114V750H259V600H358V494H260V196Q260 116 278.0 74.5Q296 33 321 6V0Z\"/><path transform=\"translate(163.14 58.00) scale(0.05354 -0.05354)\" d=\"M78 0V800H226V366H274L449 600H608V594L397 320L632 6V0H457L274 254H226V0Z\"/><path transform=\"translate(195.88 58.00) scale(0.05354 -0.05354)\" d=\"M280 -13Q198 -13 144.0 27.5Q90 68 63.5 138.5Q37 209 37 301Q37 395 64.0 465.0Q91 535 145.0 574.0Q199 613 280 613Q344 613 384.5 587.5Q425 562 445 522H469V600H606V0H469V78H445Q425 41 385.0 14.0Q345 -13 280 -13ZM317 95Q381 95 419.5 151.0Q458 207 458 300Q458 394 419.5 449.5Q381 505 317 505Q257 505 223.5 453.0Q190 401 190 300Q190 199 223.5 147.0Q257 95 317 95Z\"/></g></svg>",
+ "lockup_s": "<svg class=\"pm\" viewBox=\"0 0 164.20 125.89\" aria-hidden=\"true\" focusable=\"false\"><g transform=\"translate(56.10 0) scale(1.0000) translate(-6 -2)\"><path fill=\"currentColor\" fill-rule=\"evenodd\" d=\"M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z\"/></g><g fill=\"currentColor\"><path transform=\"translate(0.00 111.76) scale(0.05354 -0.05354)\" d=\"M115 0V494H30V600H115V637Q115 687 132.5 724.0Q150 761 192.0 781.5Q234 802 305 802Q333 802 358 799V695Q344 698 324 698Q287 698 273.5 682.0Q260 666 260 632V600H358V494H260V0Z\"/><path transform=\"translate(18.97 111.76) scale(0.05354 -0.05354)\" d=\"M271 -15Q169 -15 119.0 48.5Q69 112 69 218V600H218V244Q218 179 241.5 143.0Q265 107 316 107Q379 107 413.0 156.0Q447 205 447 276V600H596V0H462V90H438Q423 44 382.5 14.5Q342 -15 271 -15Z\"/><path transform=\"translate(53.21 111.76) scale(0.05354 -0.05354)\" d=\"M76 0V600H211V492H235Q241 521 257.0 547.0Q273 573 307.0 589.5Q341 606 399 606H428V471H387Q301 471 263.0 427.0Q225 383 225 294V0Z\"/><path transform=\"translate(75.93 111.76) scale(0.05354 -0.05354)\" d=\"M162 0Q139 27 125.5 65.0Q112 103 112 179V494H30V600H114V750H259V600H358V494H260V196Q260 116 278.0 74.5Q296 33 321 6V0Z\"/><path transform=\"translate(94.90 111.76) scale(0.05354 -0.05354)\" d=\"M78 0V800H226V366H274L449 600H608V594L397 320L632 6V0H457L274 254H226V0Z\"/><path transform=\"translate(127.64 111.76) scale(0.05354 -0.05354)\" d=\"M280 -13Q198 -13 144.0 27.5Q90 68 63.5 138.5Q37 209 37 301Q37 395 64.0 465.0Q91 535 145.0 574.0Q199 613 280 613Q344 613 384.5 587.5Q425 562 445 522H469V600H606V0H469V78H445Q425 41 385.0 14.0Q345 -13 280 -13ZM317 95Q381 95 419.5 151.0Q458 207 458 300Q458 394 419.5 449.5Q381 505 317 505Q257 505 223.5 453.0Q190 401 190 300Q190 199 223.5 147.0Q257 95 317 95Z\"/></g></svg>",
+ "tab16": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABJklEQVR42sWRvUoDURCFv9msf1hoZyFCGmEjWks2iIkSi9gIIZ2FQWx9BX0Gn0GsrUwjCSmMaB1ICBEsxMJGK8F13bHYmFzWJQQi+HX3zsyZc88VIlyvry7YCf8YZQ9huXfdUeRyEu8s03h4MfvFPFTd1K5FcA4yTzyvIrK/edO6+iVQTa9sWxJUgAmG4wXKztZtu94XqGWT0+JNdUCWGI3H9znfKVS6HzaAeDMlUGNY7hUOc41W05yquc6pwAmQnH2zi8CFFZaCvNHn69dnMTocRYU8gN3buGjUnnN33SeAetpxEdkYDGkG/QkvdBwKKJbxH4Gx5Qj0YLDWcKCSMBzEk220y0A5JoM+FmMy1EE9kyqgrMVlMJKAqpaA2Az+7An/LzA232GMWfyHzvuOAAAAAElFTkSuQmCC",
+ "full16": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABJUlEQVR42sWRz0oCYRTFf3dmkDbSbqCwTQQzPUGkgRriE6TQrnqGwKB1u54jwjbtIxzB0hdIC7fppjb92SQ1t0WMfZlOgUFnd7977uGc8wlj0Mh4yYFK0UaWABDt2ujZ2sXN0yhXzKFawnb7fgVlD0iOcB9BDrKXnUOB8JtAtYTt9vxjYIM4qFSzzc5mJGJF727fr/x4/BGnXE8v735x0Mh4yVeVnmH7NlRr6z7VDsonvEXkYNWvIeSAB03YqXxw9ewADFSKlpFZQ9leb7XPY3zM8hIWgFMHwBI89HN7t9Cp0YJ62ttXZMc4nDfK8AEcAFUS5ndEtlWlgLA4vgtmhgKTkGte583Z6GAIiykR6yBI+0fAyvgOfiGAMjexg7+K8P8CU+Md2cpUHzmzh4cAAAAASUVORK5CYII=",
+ "banner": "           ▄▄▄▄▄▄▄▄\n        ▄████████████▄\n     ▄██████████████████\n    ▄█████████▀▀▀▀▀▀▀████▄\n   ▄██████▀          █████▄\n   ██████▀           ██████\n   ██████     █████████████\n   ██████     ▀▀▀▀▀▀▀██████\n   ██████            ██████\n   ██████     ▄▄▄▄▄▄▄██████\n   ██████     █████████████\n   ██████     █████████████\n   ██████     █████████████\n   ██████     █████████████\n",
+ "color": "#c03a28",
+ "ink": "#0d0d0f"
+}

website/data/logo/r.json

@@ -0,0 +1,12 @@
+{
+ "display": "<svg class=\"pm\" viewBox=\"0 0 104 114\" aria-hidden=\"true\" focusable=\"false\"><defs><clipPath id=\"crd\" clip-rule=\"evenodd\"><path clip-rule=\"evenodd\" d=\"M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z\"/></clipPath><linearGradient id=\"grd\" gradientUnits=\"userSpaceOnUse\" x1=\"0\" y1=\"2\" x2=\"0\" y2=\"112\"><stop offset=\"0\" stop-color=\"#c9803f\"/><stop offset=\".6\" stop-color=\"#af6428\"/><stop offset=\"1\" stop-color=\"#9a561f\"/></linearGradient></defs><g fill=\"none\" stroke=\"url(#grd)\" stroke-width=\"8\" stroke-linejoin=\"round\"><path d=\"M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z\"/><path d=\"M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9\" clip-path=\"url(#crd)\"/><path d=\"M52 22H79M52 37H69\" stroke-linecap=\"round\"/><circle cx=\"52\" cy=\"65\" r=\"15\"/></g></svg>",
+ "flat": "<svg class=\"pm\" viewBox=\"0 0 104 114\" aria-hidden=\"true\" focusable=\"false\"><defs><clipPath id=\"c\" clip-rule=\"evenodd\"><path clip-rule=\"evenodd\" d=\"M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z\"/></clipPath></defs><g fill=\"none\" stroke=\"currentColor\" stroke-width=\"8\" stroke-linejoin=\"round\"><path d=\"M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z\"/><path d=\"M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9\" clip-path=\"url(#c)\"/><path d=\"M52 22H79M52 37H69\" stroke-linecap=\"round\"/><circle cx=\"52\" cy=\"65\" r=\"15\"/></g></svg>",
+ "min": "<svg class=\"pm\" viewBox=\"0 0 104 114\" aria-hidden=\"true\" focusable=\"false\"><g fill=\"none\" stroke=\"currentColor\" stroke-width=\"11\" stroke-linejoin=\"round\"><path d=\"M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z\"/><path d=\"M52 8V106M8 65H96\"/><path d=\"M52 23H78M52 39H68\" stroke-linecap=\"round\"/></g><circle cx=\"52\" cy=\"65\" r=\"19\" fill=\"currentColor\"/></svg>",
+ "lockup_h": "<svg class=\"pm\" viewBox=\"0 -4 233.17 64.00\" aria-hidden=\"true\" focusable=\"false\"><g transform=\"scale(0.5273) translate(-2 -2)\"><defs><clipPath id=\"c\" clip-rule=\"evenodd\"><path clip-rule=\"evenodd\" d=\"M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z\"/></clipPath></defs><g fill=\"none\" stroke=\"currentColor\" stroke-width=\"8\" stroke-linejoin=\"round\"><path d=\"M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z\"/><path d=\"M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9\" clip-path=\"url(#c)\"/><path d=\"M52 22H79M52 37H69\" stroke-linecap=\"round\"/><circle cx=\"52\" cy=\"65\" r=\"15\"/></g></g><g fill=\"currentColor\"><path transform=\"translate(68.97 58.00) scale(0.05354 -0.05354)\" d=\"M115 0V494H30V600H115V637Q115 687 132.5 724.0Q150 761 192.0 781.5Q234 802 305 802Q333 802 358 799V695Q344 698 324 698Q287 698 273.5 682.0Q260 666 260 632V600H358V494H260V0Z\"/><path transform=\"translate(87.94 58.00) scale(0.05354 -0.05354)\" d=\"M271 -15Q169 -15 119.0 48.5Q69 112 69 218V600H218V244Q218 179 241.5 143.0Q265 107 316 107Q379 107 413.0 156.0Q447 205 447 276V600H596V0H462V90H438Q423 44 382.5 14.5Q342 -15 271 -15Z\"/><path transform=\"translate(122.17 58.00) scale(0.05354 -0.05354)\" d=\"M76 0V600H211V492H235Q241 521 257.0 547.0Q273 573 307.0 589.5Q341 606 399 606H428V471H387Q301 471 263.0 427.0Q225 383 225 294V0Z\"/><path transform=\"translate(144.90 58.00) scale(0.05354 -0.05354)\" d=\"M162 0Q139 27 125.5 65.0Q112 103 112 179V494H30V600H114V750H259V600H358V494H260V196Q260 116 278.0 74.5Q296 33 321 6V0Z\"/><path transform=\"translate(163.87 58.00) scale(0.05354 -0.05354)\" d=\"M78 0V800H226V366H274L449 600H608V594L397 320L632 6V0H457L274 254H226V0Z\"/><path transform=\"translate(196.60 58.00) scale(0.05354 -0.05354)\" d=\"M280 -13Q198 -13 144.0 27.5Q90 68 63.5 138.5Q37 209 37 301Q37 395 64.0 465.0Q91 535 145.0 574.0Q199 613 280 613Q344 613 384.5 587.5Q425 562 445 522H469V600H606V0H469V78H445Q425 41 385.0 14.0Q345 -13 280 -13ZM317 95Q381 95 419.5 151.0Q458 207 458 300Q458 394 419.5 449.5Q381 505 317 505Q257 505 223.5 453.0Q190 401 190 300Q190 199 223.5 147.0Q257 95 317 95Z\"/></g></svg>",
+ "lockup_s": "<svg class=\"pm\" viewBox=\"0 0 164.20 125.89\" aria-hidden=\"true\" focusable=\"false\"><g transform=\"translate(55.74 0) scale(0.5273) translate(-2 -2)\"><defs><clipPath id=\"c\" clip-rule=\"evenodd\"><path clip-rule=\"evenodd\" d=\"M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z\"/></clipPath></defs><g fill=\"none\" stroke=\"currentColor\" stroke-width=\"8\" stroke-linejoin=\"round\"><path d=\"M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z\"/><path d=\"M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9\" clip-path=\"url(#c)\"/><path d=\"M52 22H79M52 37H69\" stroke-linecap=\"round\"/><circle cx=\"52\" cy=\"65\" r=\"15\"/></g></g><g fill=\"currentColor\"><path transform=\"translate(0.00 111.76) scale(0.05354 -0.05354)\" d=\"M115 0V494H30V600H115V637Q115 687 132.5 724.0Q150 761 192.0 781.5Q234 802 305 802Q333 802 358 799V695Q344 698 324 698Q287 698 273.5 682.0Q260 666 260 632V600H358V494H260V0Z\"/><path transform=\"translate(18.97 111.76) scale(0.05354 -0.05354)\" d=\"M271 -15Q169 -15 119.0 48.5Q69 112 69 218V600H218V244Q218 179 241.5 143.0Q265 107 316 107Q379 107 413.0 156.0Q447 205 447 276V600H596V0H462V90H438Q423 44 382.5 14.5Q342 -15 271 -15Z\"/><path transform=\"translate(53.21 111.76) scale(0.05354 -0.05354)\" d=\"M76 0V600H211V492H235Q241 521 257.0 547.0Q273 573 307.0 589.5Q341 606 399 606H428V471H387Q301 471 263.0 427.0Q225 383 225 294V0Z\"/><path transform=\"translate(75.93 111.76) scale(0.05354 -0.05354)\" d=\"M162 0Q139 27 125.5 65.0Q112 103 112 179V494H30V600H114V750H259V600H358V494H260V196Q260 116 278.0 74.5Q296 33 321 6V0Z\"/><path transform=\"translate(94.90 111.76) scale(0.05354 -0.05354)\" d=\"M78 0V800H226V366H274L449 600H608V594L397 320L632 6V0H457L274 254H226V0Z\"/><path transform=\"translate(127.64 111.76) scale(0.05354 -0.05354)\" d=\"M280 -13Q198 -13 144.0 27.5Q90 68 63.5 138.5Q37 209 37 301Q37 395 64.0 465.0Q91 535 145.0 574.0Q199 613 280 613Q344 613 384.5 587.5Q425 562 445 522H469V600H606V0H469V78H445Q425 41 385.0 14.0Q345 -13 280 -13ZM317 95Q381 95 419.5 151.0Q458 207 458 300Q458 394 419.5 449.5Q381 505 317 505Q257 505 223.5 453.0Q190 401 190 300Q190 199 223.5 147.0Q257 95 317 95Z\"/></g></svg>",
+ "tab16": "data:image/png;base64,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",
+ "full16": "data:image/png;base64,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",
+ "banner": "         ▄▄▄▄▄▄▄▄▄▄▄▄\n     ▄▄████▀▀████▀▀████▄▄\n   ▄██▀▀      ██      ▀▀██▄\n  ██▀         ██████████ ▀██\n ███          ██          ▀██\n ████▄        ███████      ██\n ██▀▀██▄▄     ██           ██\n ██   ▀▀██▄▄██████▄        ██\n ██      ▀██▀▀  ▀▀██       ██\n ███████████      ███████████\n ██      ▀██▄    ▄██▀      ██\n ██    ▄██████████████▄    ██\n ██ ▄▄██▀▀   ▀██▀   ▀▀██▄▄ ██\n ████▀▀       ██       ▀▀████\n ██▀          ██          ▀██\n ██▄▄▄▄▄▄▄▄▄▄████▄▄▄▄▄▄▄▄▄▄██\n ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀",
+ "color": "#af6428",
+ "ink": "#151515"
+}

website/deploy-ci.sh

@@ -11,6 +11,13 @@ HERE="$(cd "$(dirname "$0")" && pwd)"
 SRCROOT="${FURTKA_SRCROOT:-/srv/furtka-site}"
 WEBROOT="${FURTKA_WEBROOT:-/var/www/furtka.org}"
 
+# The runner job runs as root inside the container; hand the trees back
+# to the VM user no matter how this script ends, so the manual deploy.sh
+# path keeps working even after a failed build.
+if [ "$(id -u)" = 0 ]; then
+  trap 'chown -R "${FURTKA_OWNER:-1000:1000}" "$SRCROOT" "$WEBROOT"' EXIT
+fi
+
 echo "==> rsync website/ → $SRCROOT"
 rsync -az --delete \
   --exclude='.hugo_build.lock' \

website/hugo.toml

@@ -6,7 +6,7 @@ enableRobotsTXT = true
 
 [params]
   description = "Open-source home server OS — simple enough for everyone."
-  version = "26.16-alpha"
+  version = "26.20-alpha"
   contactEmail = "hallo@furtka.org"
 
 [markup.goldmark.renderer]

website/layouts/index.html

@@ -12,6 +12,9 @@
         <span aria-hidden="true">→</span>
       </a>
     </p>
+    {{ with .Params.poll_link }}
+    <p class="reveal"><a class="home-poll" href="{{ . }}">{{ partial "mark-m.html" (dict "class" "" "id" "hm") }}{{ partial "mark-r.html" (dict "class" "" "id" "hr") }}<span>{{ $.Params.poll_text }} →</span></a></p>
+    {{ end }}
   </header>
 
   {{ with .Params.intro }}

website/layouts/partials/head.html

@@ -1,7 +1,11 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <script>document.documentElement.classList.replace('no-js','js');</script>
-<title>{{ if .IsHome }}{{ site.Title }} — {{ site.Params.description }}{{ else }}{{ .Title }} · {{ site.Title }}{{ end }}</title>
+{{ if eq .Type "poll" }}{{/* Coin-flip which mark sits left/first, so neither side collects the
+   "first thing on the page" votes. Decided before first paint (no reflow), applied by CSS `order`,
+   and kept for the tab session so a reload or a vote doesn't shuffle the page under the visitor. */}}
+<script>(function(){var k='furtka-logo-order',o=null;try{o=sessionStorage.getItem(k)}catch(e){}if(o!=='mr'&&o!=='rm'){o=Math.random()<0.5?'mr':'rm';try{sessionStorage.setItem(k,o)}catch(e){}}document.documentElement.setAttribute('data-logo-order',o)})();</script>
+{{ end }}<title>{{ if .IsHome }}{{ site.Title }} — {{ site.Params.description }}{{ else }}{{ .Title }} · {{ site.Title }}{{ end }}</title>
 <meta name="description" content="{{ with .Params.description }}{{ . }}{{ else }}{{ site.Params.description }}{{ end }}">
 <meta name="theme-color" content="#f7f6f3" media="(prefers-color-scheme: light)">
 <meta name="theme-color" content="#0d0d0f" media="(prefers-color-scheme: dark)">
@@ -11,6 +15,10 @@
 <meta property="og:description" content="{{ with .Params.description }}{{ . }}{{ else }}{{ site.Params.description }}{{ end }}">
 <meta property="og:type" content="{{ if .IsPage }}article{{ else }}website{{ end }}">
 <meta property="og:url" content="{{ .Permalink }}">
+{{ with .Params.image }}<meta property="og:image" content="{{ . | absURL }}">
+<meta property="og:image:width" content="1200">
+<meta property="og:image:height" content="630">
+<meta name="twitter:card" content="summary_large_image">{{ end }}
 {{ $parts := split .Site.Language.LanguageCode "-" }}<meta property="og:locale" content="{{ index $parts 0 }}{{ if gt (len $parts) 1 }}_{{ upper (index $parts 1) }}{{ end }}">
 {{ range .AllTranslations }}
 <link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}">

website/layouts/partials/mark-m.html

@@ -0,0 +1,2 @@
+{{- /* Mark M — lowercase f cut out of a gate. 64-unit grid, even-odd knockout. */ -}}
+<svg class="pm {{ .class }}" viewBox="0 0 64 64" aria-hidden="true" focusable="false"><path fill="currentColor" fill-rule="evenodd" d="M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z"/></svg>

website/layouts/partials/mark-r.html

@@ -0,0 +1,2 @@
+{{- /* Mark R — window, wheel and F. 104x114 grid, stroke 8, hub knocked out. */ -}}
+<svg class="pm {{ .class }}" viewBox="0 0 104 114" aria-hidden="true" focusable="false"><defs><clipPath id="pm-rc-{{ .id }}" clip-rule="evenodd"><path clip-rule="evenodd" d="M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z"/></clipPath></defs><g fill="none" stroke="currentColor" stroke-width="8" stroke-linejoin="round"><path d="M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z"/><path d="M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9" clip-path="url(#pm-rc-{{ .id }})"/><path d="M52 22H79M52 37H69" stroke-linecap="round"/><circle cx="52" cy="65" r="15"/></g></svg>

website/layouts/poll/single.html

@@ -0,0 +1,168 @@
+{{ define "main" }}
+{{- $p := .Params -}}
+{{/* Display order of the two marks; flip via `order: [r, m]` in front matter so neither
+    side gets the "first thing on the page" advantage for the whole poll. */}}
+{{- $order := $p.order | default (slice "m" "r") -}}
+{{- $s := $p.show -}}
+<article class="poll" data-poll="{{ $p.poll }}" data-api="/api/poll/{{ $p.poll }}">
+  <header class="page-header">
+    <h1>{{ .Title }}</h1>
+    {{ with $p.description }}<p class="lede">{{ . }}</p>{{ end }}
+  </header>
+  <div class="prose">{{ .Content }}</div>
+
+  {{/* ── Quick vote ─────────────────────────────────────────── */}}
+  <div class="poll-grid" id="vote">
+    {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+    {{ $c := index $p $k }}
+    <section class="poll-card" data-choice="{{ $k }}" aria-labelledby="poll-{{ $k }}-title">
+      <div class="poll-art poll-art--{{ $k }}">{{ $d.display | safeHTML }}</div>
+      <h2 id="poll-{{ $k }}-title">{{ $c.title }}</h2>
+      <p class="poll-desc">{{ $c.text }}</p>
+      <button type="button" class="poll-btn" data-vote="{{ $k }}">{{ $p.labels.vote }}</button>
+      <div class="poll-bar" aria-hidden="true"><i></i></div>
+      <p class="poll-count" data-count="{{ $k }}"></p>
+    </section>
+    {{ end }}
+  </div>
+  <p class="poll-status" role="status" aria-live="polite"
+     data-t-voted="{{ $p.labels.voted }}"
+     data-t-total="{{ $p.labels.total }}"
+     data-t-error="{{ $p.labels.error }}"
+     data-t-change="{{ $p.labels.change }}">{{ $p.labels.nojs }}</p>
+
+  {{/* ── Showcase ───────────────────────────────────────────── */}}
+  <div class="show">
+    <p class="section-eyebrow show-intro">{{ $s.intro }}</p>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.sizes }}</h2>
+      <p class="show-p">{{ $s.sizes_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <div class="sizes">
+            <figure><span class="sz sz-96">{{ $d.flat | safeHTML }}</span><figcaption>96</figcaption></figure>
+            <figure><span class="sz sz-48">{{ $d.flat | safeHTML }}</span><figcaption>48</figcaption></figure>
+            <figure><span class="sz sz-32">{{ $d.min | safeHTML }}</span><figcaption>32</figcaption></figure>
+            <figure><span class="sz sz-24">{{ $d.min | safeHTML }}</span><figcaption>24</figcaption></figure>
+            <figure><img class="px" src="{{ $d.tab16 | safeURL }}" width="16" height="16" alt=""><figcaption>16</figcaption></figure>
+          </div>
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.name }}</h2>
+      <p class="show-p">{{ $s.name_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <div class="lock lock-h">{{ $d.lockup_h | safeHTML }}</div>
+          <div class="lock lock-s">{{ $d.lockup_s | safeHTML }}</div>
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.browser }}</h2>
+      <p class="show-p">{{ $s.browser_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <div class="mock">
+            <div class="tabbar"><span class="tab"><img class="px" src="{{ $d.tab16 | safeURL }}" width="16" height="16" alt="">Furtka</span></div>
+            <div class="urlbar">https://furtka.org</div>
+            <div class="uihead"><span class="uihead-mark">{{ $d.flat | safeHTML }}</span><span class="uihead-name">Furtka</span><span class="uihead-nav"><span>{{ $s.nav1 }}</span><span>{{ $s.nav2 }}</span></span></div>
+            <div class="uibody"><i></i><i class="s"></i></div>
+          </div>
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.phone }}</h2>
+      <p class="show-p">{{ $s.phone_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <div class="tiles"><img src="/img/logo/{{ $k }}/tile.png" width="96" height="96" alt=""><img src="/img/logo/{{ $k }}/tile-round.png" width="96" height="96" alt=""></div>
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.box }}</h2>
+      <p class="show-p">{{ $s.box_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <pre class="term"><i>{{ $d.banner }}</i>
+
+  <b>Furtka is ready.</b>  Open http://furtka.local</pre>
+          <img class="shot" src="/img/logo/{{ $k }}/splash.png" width="960" height="540" alt="">
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.shared }}</h2>
+      <p class="show-p">{{ $s.shared_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <img class="shot" src="/img/logo/{{ $k }}/social.png" width="600" height="315" alt="">
+        </div>
+        {{ end }}
+      </div>
+    </section>
+
+    <section class="show-row">
+      <h2 class="show-h">{{ $s.colour }}</h2>
+      <p class="show-p">{{ $s.colour_text }}</p>
+      <div class="show-pair">
+        {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+        <div class="show-cell show-cell--{{ $k }}">
+          <span class="show-tag">{{ index $p $k "short" }}</span>
+          <div class="grounds">
+            <span class="ground" style="background:#f7f6f3;color:{{ $d.color }}">{{ $d.flat | safeHTML }}</span>
+            <span class="ground" style="background:{{ $d.ink }};color:{{ $d.color }}">{{ $d.flat | safeHTML }}</span>
+            <span class="ground" style="background:{{ $d.color }};color:#f7f6f3">{{ $d.flat | safeHTML }}</span>
+            <span class="ground ground--fg">{{ $d.flat | safeHTML }}</span>
+          </div>
+        </div>
+        {{ end }}
+      </div>
+    </section>
+  </div>
+
+  {{/* ── Vote again at the end ─────────────────────────────── */}}
+  <section class="poll-final">
+    <h2 class="show-h">{{ $s.final }}</h2>
+    <div class="poll-final-row">
+      {{ range $k := $order }}{{ $d := index site.Data.logo $k }}
+      <div class="poll-final-card" data-choice="{{ $k }}">
+        <span class="poll-final-mark show-cell--{{ $k }}">{{ $d.flat | safeHTML }}</span>
+        <button type="button" class="poll-btn" data-vote="{{ $k }}">{{ $p.labels.vote }} — {{ index $p $k "short" }}</button>
+        <div class="poll-bar" aria-hidden="true"><i></i></div>
+        <p class="poll-count" data-count="{{ $k }}"></p>
+      </div>
+      {{ end }}
+    </div>
+  </section>
+  <p class="poll-note">{{ $p.labels.note | safeHTML }}</p>
+</article>
+{{ $js := resources.Get "js/poll.js" | minify | fingerprint }}
+<script defer src="{{ $js.RelPermalink }}" integrity="{{ $js.Data.Integrity }}"></script>
+{{ end }}

website/tools/FONT-PROVENANCE.md

@@ -0,0 +1,9 @@
+# Build-time font
+
+`FamiljenGrotesk-SemiBold.ttf` — Familjen Grotesk, weight 600, fetched from
+Google Fonts (fonts.gstatic.com, family `Familjen+Grotesk:wght@600`) on
+2026-08-26. Licence: SIL Open Font License 1.1.
+
+It is used **only** by `tools/logo-assets.py` to outline the wordmark into
+SVG paths and to render the splash / social-card PNGs. The site itself ships
+no webfonts.

website/tools/logo-assets.py

@@ -0,0 +1,291 @@
+#!/usr/bin/env python3
+"""Generate the logo-poll showcase assets for /logo/ from one geometry source.
+
+    python3 website/tools/logo-assets.py
+
+Writes website/static/img/logo/{m,r}/*.png and website/data/logo/{m,r}.json.
+Needs: cairosvg, Pillow, fontTools (pip). Run it on the dev box and commit
+the output — the site build itself needs nothing beyond Hugo.
+
+Mark M: lowercase f knocked out of a gate, 64-unit grid (even-odd fill).
+Mark R: window, wheel and F, 104x114 grid, stroke 8 (from Robert's sketch).
+"""
+import base64
+import io
+import json
+import os
+import sys
+
+import cairosvg
+from fontTools.pens.svgPathPen import SVGPathPen
+from fontTools.ttLib import TTFont
+from PIL import Image, ImageDraw
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+SITE = os.path.dirname(HERE)
+FONT = os.path.join(HERE, "FamiljenGrotesk-SemiBold.ttf")
+XMLNS = 'xmlns="http://www.w3.org/2000/svg"'
+
+# ---------------------------------------------------------------- geometry
+M_FLAT = (
+    "M6 60V28a26 26 0 0 1 52 0v32Z M20.0 60V26.5A10.5 10.5 0 0 1 30.5 16H45.0v8.6"
+    "H32.5a3.5 3.5 0 0 0-3.5 3.5V32h16v8.6H29.0V60Z"
+)
+M_MIN = (
+    "M5 60V27a27 27 0 0 1 54 0v33Z M19.5 60V26A10 10 0 0 1 29.5 16H46v10H32"
+    "a2.5 2.5 0 0 0-2.5 2.5V32H46v10H29.5v18Z"
+)
+R_FRAME = "M6 108V42A36 36 0 0 1 42 6H62A36 36 0 0 1 98 42V108Z"
+R_OUTER = "M2 112V42A40 40 0 0 1 42 2H62A40 40 0 0 1 102 42V112Z"
+R_HOLE = "M63 65a11 11 0 1 0-22 0a11 11 0 1 0 22 0Z"
+R_SPOKES = "M52 8V106 M8 65H96 M52 65L4 31.1 M52 65L4 98.9 M52 65L100 98.9"
+R_ARMS = "M52 22H79M52 37H69"
+
+MARKS = {
+    "m": {
+        "vb": (0, 0, 64, 64),
+        "box": (6, 2, 52, 58),  # x, y, w, h of the drawn mark inside the viewBox
+        "color": "#c03a28",
+        "ink": "#0d0d0f",
+        "grad": ("#d95a45", "#c03a28", "#8a2618"),
+    },
+    "r": {
+        "vb": (0, 0, 104, 114),
+        "box": (2, 2, 100, 110),
+        "color": "#af6428",
+        "ink": "#151515",
+        "grad": ("#c9803f", "#af6428", "#9a561f"),
+    },
+}
+
+
+def body(k, tier, color="currentColor", uid=""):
+    """SVG inner markup for mark k at tier display | flat | min."""
+    if k == "m":
+        if tier == "display":
+            g = MARKS["m"]["grad"]
+            return (
+                f'<defs><linearGradient id="g{uid}" x1=".15" y1="0" x2=".7" y2="1">'
+                f'<stop offset="0" stop-color="{g[0]}"/><stop offset=".55" stop-color="{g[1]}"/>'
+                f'<stop offset="1" stop-color="{g[2]}"/></linearGradient>'
+                f'<clipPath id="c{uid}" clip-rule="evenodd"><path d="{M_FLAT}"/></clipPath></defs>'
+                f'<path fill="url(#g{uid})" fill-rule="evenodd" d="{M_FLAT}"/>'
+                f'<g clip-path="url(#c{uid})"><path fill="#fff" opacity=".14" '
+                f'd="M6 28a26 26 0 0 1 52 0v4.5a26 26 0 0 0-52 0Z"/></g>'
+            )
+        path = M_MIN if tier == "min" else M_FLAT
+        return f'<path fill="{color}" fill-rule="evenodd" d="{path}"/>'
+    if tier == "min":
+        return (
+            f'<g fill="none" stroke="{color}" stroke-width="11" stroke-linejoin="round">'
+            f'<path d="{R_FRAME}"/><path d="M52 8V106M8 65H96"/>'
+            f'<path d="M52 23H78M52 39H68" stroke-linecap="round"/></g>'
+            f'<circle cx="52" cy="65" r="19" fill="{color}"/>'
+        )
+    defs = (
+        f'<clipPath id="c{uid}" clip-rule="evenodd"><path clip-rule="evenodd" '
+        f'd="{R_OUTER} {R_HOLE}"/></clipPath>'
+    )
+    if tier == "display":
+        g = MARKS["r"]["grad"]
+        defs += (
+            f'<linearGradient id="g{uid}" gradientUnits="userSpaceOnUse" x1="0" y1="2" x2="0" y2="112">'
+            f'<stop offset="0" stop-color="{g[0]}"/><stop offset=".6" stop-color="{g[1]}"/>'
+            f'<stop offset="1" stop-color="{g[2]}"/></linearGradient>'
+        )
+        color = f"url(#g{uid})"
+    return (
+        f"<defs>{defs}</defs>"
+        f'<g fill="none" stroke="{color}" stroke-width="8" stroke-linejoin="round">'
+        f'<path d="{R_FRAME}"/><path d="{R_SPOKES}" clip-path="url(#c{uid})"/>'
+        f'<path d="{R_ARMS}" stroke-linecap="round"/><circle cx="52" cy="65" r="15"/></g>'
+    )
+
+
+def svg(k, tier, color="currentColor", uid="", cls="pm", standalone=False):
+    x, y, w, h = MARKS[k]["vb"]
+    ns = f" {XMLNS}" if standalone else ""
+    return (
+        f'<svg class="{cls}"{ns} viewBox="{x} {y} {w} {h}" aria-hidden="true" focusable="false">'
+        f"{body(k, tier, color, uid)}</svg>"
+    )
+
+
+# ---------------------------------------------------------------- raster
+def raster(svgtxt, w, h):
+    png = cairosvg.svg2png(bytestring=svgtxt.encode(), output_width=w, output_height=h)
+    return Image.open(io.BytesIO(png)).convert("RGBA")
+
+
+def mark_png(k, tier, height, color=None):
+    _, _, w, h = MARKS[k]["vb"]
+    return raster(svg(k, tier, color or MARKS[k]["color"], standalone=True), round(height * w / h), height)
+
+
+# ---------------------------------------------------------------- wordmark
+_font = TTFont(FONT)
+_upm = _font["head"].unitsPerEm
+_cap = _font["OS/2"].sCapHeight or int(_upm * 0.7)
+_glyphs = _font.getGlyphSet()
+_cmap = _font.getBestCmap()
+
+
+def wordmark(text, size, x0=0.0, baseline=0.0, tracking=-0.028):
+    """Outline text as one SVG path; returns (path_d, advance_width)."""
+    s = size / _upm
+    parts, x = [], x0
+    for ch in text:
+        name = _cmap[ord(ch)]
+        pen = SVGPathPen(_glyphs)
+        g = _glyphs[name]
+        g.draw(pen)
+        d = pen.getCommands()
+        if d:
+            parts.append(f'<path transform="translate({x:.2f} {baseline:.2f}) scale({s:.5f} {-s:.5f})" d="{d}"/>')
+        x += g.width * s + tracking * size
+    return "".join(parts), x - x0 - tracking * size
+
+
+def lockup(k, stacked=False):
+    """Mark + 'furtka', outlined, currentColor. Returns an inline SVG string."""
+    bx, by, bw, bh = MARKS[k]["box"]
+    H = 58.0  # mark height in lockup units
+    sc = H / bh
+    mw = bw * sc
+    size = H * 0.72 * _upm / _cap  # cap height = 72 % of the mark height
+    if stacked:
+        paths, tw = wordmark("furtka", size)
+        gap = 12
+        total_w = max(mw, tw)
+        total_h = H + gap + size * _cap / _upm + size * 0.22
+        mx = (total_w - mw) / 2
+        tx = (total_w - tw) / 2
+        base = H + gap + size * _cap / _upm
+        paths, _ = wordmark("furtka", size, x0=tx, baseline=base)
+        inner = (
+            f'<g transform="translate({mx:.2f} 0) scale({sc:.4f}) translate({-bx} {-by})">{body(k, "flat")}</g>'
+            f'<g fill="currentColor">{paths}</g>'
+        )
+        return f'<svg class="pm" viewBox="0 0 {total_w:.2f} {total_h:.2f}" aria-hidden="true" focusable="false">{inner}</svg>'
+    gap = H * 0.28
+    paths, tw = wordmark("furtka", size, x0=mw + gap, baseline=H)
+    total_w = mw + gap + tw
+    inner = (
+        f'<g transform="scale({sc:.4f}) translate({-bx} {-by})">{body(k, "flat")}</g>'
+        f'<g fill="currentColor">{paths}</g>'
+    )
+    return f'<svg class="pm" viewBox="0 -4 {total_w:.2f} {H + 6:.2f}" aria-hidden="true" focusable="false">{inner}</svg>'
+
+
+def lockup_png(k, W, Hpx, stacked, mark_h):
+    """Rasterise the lockup on the mark's ink ground (splash / social card)."""
+    ink = MARKS[k]["ink"]
+    col = MARKS[k]["color"]
+    inner = lockup(k, stacked).replace("currentColor", col)
+    inner = inner.replace('<svg class="pm"', f"<svg {XMLNS}")
+    vb = inner.split('viewBox="')[1].split('"')[0].split()
+    vw, vh = float(vb[2]), float(vb[3])
+    scale = mark_h / 58.0
+    w, h = round(vw * scale), round(vh * scale)
+    im = Image.new("RGBA", (W, Hpx), ink)
+    im.alpha_composite(raster(inner, w, h), ((W - w) // 2, (Hpx - h) // 2))
+    return im
+
+
+# ---------------------------------------------------------------- tiles etc.
+def tile(k, size, pad=0.18, radius=None):
+    im = Image.new("RGBA", (size, size), MARKS[k]["ink"])
+    m = mark_png(k, "flat", int(size * (1 - 2 * pad)))
+    im.alpha_composite(m, ((size - m.width) // 2, (size - m.height) // 2))
+    if radius:
+        mask = Image.new("L", (size, size), 0)
+        ImageDraw.Draw(mask).rounded_rectangle([0, 0, size - 1, size - 1], radius, fill=255)
+        im.putalpha(mask)
+    return im
+
+
+def banner(k, cols=30):
+    """Half-block console art (~30 columns) from the interface tier.
+
+    Sampled by coverage: the mark is rendered 4x and box-averaged down to
+    one sample per half-character, then thresholded at 50 %.
+    """
+    _, _, w, h = MARKS[k]["vb"]
+    rows = round(cols * h / w)
+    rows += rows % 2
+    a = raster(svg(k, "flat", "#000", standalone=True), cols * 4, rows * 4).split()[3]
+    a = a.resize((cols, rows), Image.BOX)
+    lines = []
+    for y in range(0, rows, 2):
+        s = ""
+        for x in range(cols):
+            t = a.getpixel((x, y)) > 128
+            b = a.getpixel((x, y + 1)) > 128
+            s += "█" if t and b else "▀" if t else "▄" if b else " "
+        lines.append(s.rstrip())
+    return "\n".join(lines)
+
+
+def b64png(im):
+    buf = io.BytesIO()
+    im.save(buf, "PNG", optimize=True)
+    return "data:image/png;base64," + base64.b64encode(buf.getvalue()).decode()
+
+
+def vote_card(path):
+    """1200x630 share card for /logo/: M on cream, R on ink, side by side."""
+    W, H = 1200, 630
+    im = Image.new("RGBA", (W, H), "#f7f6f3")
+    ImageDraw.Draw(im).rectangle([W // 2, 0, W, H], fill=MARKS["r"]["ink"])
+    for k, cx in (("m", W // 4), ("r", 3 * W // 4)):
+        m = mark_png(k, "flat", 330)
+        im.alpha_composite(m, (cx - m.width // 2, 110 - (m.height - 330) // 2))
+    size = 46
+    d = ImageDraw.Draw(im)
+    for text, cx, col in (("M", W // 4, "#6b6b6f"), ("R", 3 * W // 4, "#8a8a90")):
+        paths, tw = wordmark(text, size)
+        # letters via the same outlines: rasterise a tiny SVG for crisp text
+        svgtxt = (f'<svg {XMLNS} viewBox="0 -{size} {tw:.0f} {size * 1.3:.0f}">'
+                  f'<g fill="{col}">{paths}</g></svg>')
+        t = raster(svgtxt, round(tw), round(size * 1.3))
+        im.alpha_composite(t, (cx - t.width // 2, 500))
+    # url line, centred on the seam
+    paths, tw = wordmark("furtka.org/logo", 40)
+    svgtxt = (f'<svg {XMLNS} viewBox="0 -40 {tw:.0f} 52"><g fill="#c03a28">{paths}</g></svg>')
+    t = raster(svgtxt, round(tw), 52)
+    pad = 18
+    box = Image.new("RGBA", (t.width + 2 * pad, t.height + 2 * pad), "#f7f6f3")
+    ImageDraw.Draw(box).rounded_rectangle([0, 0, box.width - 1, box.height - 1], 14, outline="#e4e3dc")
+    box.alpha_composite(t, (pad, pad))
+    im.alpha_composite(box, (W // 2 - box.width // 2, 40))
+    im.convert("RGB").save(path, optimize=True)
+
+
+def main():
+    vote_card(os.path.join(SITE, "static", "img", "logo", "vote-card.png"))
+    for k in MARKS:
+        out = os.path.join(SITE, "static", "img", "logo", k)
+        os.makedirs(out, exist_ok=True)
+        tile(k, 192, radius=42).save(os.path.join(out, "tile.png"), optimize=True)
+        tile(k, 192, radius=96).save(os.path.join(out, "tile-round.png"), optimize=True)
+        lockup_png(k, 960, 540, True, 190).save(os.path.join(out, "splash.png"), optimize=True)
+        lockup_png(k, 600, 315, False, 130).save(os.path.join(out, "social.png"), optimize=True)
+        data = {
+            "display": svg(k, "display", uid=f"{k}d"),
+            "flat": svg(k, "flat"),
+            "min": svg(k, "min"),
+            "lockup_h": lockup(k),
+            "lockup_s": lockup(k, stacked=True),
+            "tab16": b64png(mark_png(k, "min", 16)),
+            "full16": b64png(mark_png(k, "flat", 16)),
+            "banner": banner(k),
+            "color": MARKS[k]["color"],
+            "ink": MARKS[k]["ink"],
+        }
+        with open(os.path.join(SITE, "data", "logo", f"{k}.json"), "w") as f:
+            json.dump(data, f, indent=1, ensure_ascii=False)
+        print(k, "ok")
+
+
+if __name__ == "__main__":
+    sys.exit(main())