v0.270.0: no update for a current app (R-679); an interrupted install is reported (R-681); a restore brings back the pinned version's health check (R-669); R-674

Five red-proofs. MinAgent 0.131.0 unchanged.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

CHANGELOG.md

@@ -1,3 +1,26 @@
+## v0.270.0 — no update for a current app; an interrupted install is reported; a restore brings back the right health check (2026-09-24, R-679, R-681, R-669, R-674)
+
+**MinAgent: 0.131.0** (unchanged). Needs hub v0.123.0 (unchanged; R-681 rides the existing `app_deploy_failed`).
+New strings: yes (hu + en).
+
+- **R-679:** an Update pressed on an app already at the catalog head is refused BEFORE anything moves —
+  `409 already_current`, „Ez az alkalmazás már a legfrissebb elérhető változatot futtatja — nincs mit
+  frissíteni." / "This app is already running the newest version available — there is nothing to update."
+  "Current" is `CatalogOrder`'s verdict, so a re-tested digest for a floating tag still updates. Measured:
+  navidrome at the head was pressed four times, each a dump, a pull and a restart. (A test comment had called a
+  same-version Update "the repair path"; Restart is that path.)
+- **R-681:** an install cut off by a controller restart is finished through the failure path and REPORTED: an
+  install marker is written before the compose-up and removed when the install ends; a marker found at start →
+  `compose down` (volumes kept), the stale pin records cleared, `app_deploy_failed` with the reason, and the
+  apps page says „A telepítés egy újraindítás miatt félbemaradt…" until the next install. An install that had
+  finished (its record says deployed) only loses the marker.
+- **R-669:** the recovery unit captures the PINNED version's `.felhom.yml` (`applied-meta`), not the stack dir's
+  file the sync may already have replaced with a newer or failing step's; a restore makes the restored file the
+  applied record. Measured 2026-09-24: the undo judged the correct old version with the failed step's probe
+  and held the app.
+- **R-674:** the ladder log says "AT THE HEAD" when the pin equals the newest step, not "older than the ladder".
+- Red-proofs: five (REPORT).
+
 ## v0.269.1 — an installed app keeps the image it runs until an Update moves it (2026-09-24 night, Part B live finding)
 
 **MinAgent: 0.131.0** (unchanged). Needs hub v0.123.0 (as v0.269.0). New strings: none.