v0.331.0: a removal deletes the volumes still labelled with the app's project that its definition no longer declares (R-1117)

compose down --volumes removes only the current definition's volumes; a volume a template dropped (or an older restore
re-created) survived 'remove with data' on 9202 (nextcloud_nextcloud_redis_data). Red-proofed.

CHANGELOG.md

@@ -1,4 +1,4 @@
-## v0.331.0 — OnlyOffice opens and SAVES from FileBrowser and Nextcloud; FileBrowser is back at once after a restart (R-1018) (2026-10-18)
+## v0.331.0 — OnlyOffice opens and SAVES from FileBrowser and Nextcloud; FileBrowser is back at once after a restart (R-1018); a removal deletes a volume the definition dropped (R-1117) (2026-10-18)
 
 **MinAgent: 0.158.1** — the floor's, carried (not above the vouched agent 0.159.2). Nothing here calls a new agent route.
 No golden (`09` §3 decision 250). Task: the evening brief of 2026-10-18 (felhom.eu `REPORT-evening-2026-10-18.md`).
@@ -21,6 +21,12 @@ box's public names; felhom.eu `audits/onlyoffice-2026-10-18/`).
   FileBrowser, and a re-created FileBrowser starts off traefik-public — R-1126 — until the next base-stack round;
   measured 4 min 8 s and 3 min 38 s). `RestartStack("filebrowser")` now runs the gate at once, in the background, like
   the mounts sync. `TestRestartStack_R1018_FileBrowserPublishedAgainAtOnce`.
+- **A removal left a volume the definition no longer declares** (R-1117, found while measuring the Redis template
+  change on 9202): `compose down --volumes` removes only the CURRENT definition's volumes, so a volume a template dropped
+  — or one a restore re-created from an older unit — kept the app's project label and survived „remove with data"
+  (`nextcloud_nextcloud_redis_data`, measured). `RemoveStack` now removes, by name, every volume still labelled with the
+  app's project after the down. `TestR1117_RemoveDeletesALabelledVolumeTheDefinitionNoLongerDeclares` (another
+  project's volume is never touched); red-proof felhom.eu `audits/redis-volumes-2026-10-18/redproof-leftover-volume.txt`.
 - Red-proofs: each fix removed → its test fails with the wrong value (felhom.eu `audits/onlyoffice-2026-10-18/redproof-fix{1,2,3}.txt`).
 - No page changed; every fixture byte-identical.