docs(changelog): bug-scan fixes under Unreleased

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wq1hzUp4ZmCKHDuLKCnu73

CHANGELOG.md

@@ -7,8 +7,50 @@ This project uses calendar versioning: `YY.N-stage` (e.g. `26.0-alpha` = 2026, r
 
 ## [Unreleased]
 
+### Security
+
+- **App names are validated everywhere.** `POST /api/apps/remove` with
+  `{"name": ".."}` or `"/"` sent `shutil.rmtree` at `/var/lib/furtka` or the
+  root filesystem (and wiping `users.json` reopened first-run admin setup to
+  the LAN). Names from URLs, JSON bodies and manifests must now match
+  `^[a-z][a-z0-9_-]*$`; `installer.remove`/`update_env` check it too.
+- **Settings can't inject into `.env`.** Line breaks are refused; values
+  with `$` are single-quoted so compose doesn't expand them (`pa$word` used
+  to become `pa`). Validation runs before the write, so a rejected `/etc`
+  path is no longer saved anyway.
+- **Damaged `users.json` fails closed.** An empty/corrupt file used to read
+  as "no admin yet" and turned `/login` into an open create-admin form.
+  `/login` now answers 503 with SSH recovery steps; `save_users` fsyncs.
+- **API server hardening:** threaded (state changes still serialised), 1 MiB
+  body cap, 30 s socket timeout, cross-site POSTs refused via
+  `Sec-Fetch-Site`, JSON 500 instead of dropped connections.
+
 ### Fixed
 
+- **Installer disk picker:** SATA SSDs were labelled "HDD" and lost the
+  recommendation to bigger spinning disks; type now comes from lsblk
+  `TRAN`/`ROTA`. zram, eMMC boot/RPMB areas, read-only and 0-byte disks are
+  hidden; disks under 16 GB are greyed out; USB disks rank last; >2 TB disks
+  on BIOS machines get an MBR warning; the boot stick is also found via the
+  archiso kernel args when `bootmnt` is gone. Step 2 only accepts a listed disk.
+- **Installer runs one install at a time** (double-click / second browser
+  started a second archinstall on the same disk), and a crashed archinstall
+  (OOM kill, signal) now shows as an error instead of a progress bar stuck
+  forever. Disk-probe exceptions land in the log instead of a bare 500.
+- **Failed installs can be retried** from the error page without re-entering
+  everything.
+- **No 2-minute boot stall on boards with a second NIC:** the target gets a
+  `systemd-networkd-wait-online --any` drop-in.
+- **Self-update:** symlink flip is atomic; any error after the flip rolls
+  back (and restores the previous Caddyfile); health check survives read
+  timeouts; every failure ends in an `error` stage the settings page shows.
+- **Interrupted app installs no longer block all later installs** — a stale
+  state with no live runner is marked failed after 60 s.
+- **Catalog sync / update checks** no longer strand on socket resets or disk
+  full.
+- **Apps page after an API restart** redirects to `/login` instead of
+  showing an empty app list.
+
 - **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
@@ -19,6 +61,14 @@ This project uses calendar versioning: `YY.N-stage` (e.g. `26.0-alpha` = 2026, r
   (installer-created links use `current`). Now: link via `current`, enable,
   start.
 
+### Changed
+
+- Wizard wording: "Server name" with a live `http://<name>.local` preview,
+  "Pick a disk" with an explicit erase warning, readable confirm table,
+  password hint explains it's also the SSH/console password, names are
+  lowercased instead of rejected, system account names are refused.
+- Live console banner says a network cable with internet is required.
+
 ## [26.20-alpha] - 2026-08-25
 
 First release shaped by a real-hardware install (old laptop mainboard, BIOS boot,