v0.244.0: the backup page stops promising what it does not hold (R-537/R-538/R-536)

R-537 — the contents label is now PER TIER. One string computed from the app's
shape was rendered on all three tier rows; a Tier-1 unit has no file-copy step, so
for the four class-A apps it was claiming „Adatok" for files it does not hold.

R-538 — a unit restore REFUSES before anything is touched when the unit cannot
return the app's drive-side files, and names the route that can. It runs before the
stack is stopped because the measured harm included the app's own wastebasket going
unreachable, which still held every byte.

R-536 — „Alkalmazás telepítve" moved from the deploy's acceptance to its completion,
with app_deploy_started and app_deploy_failed as the honest pair.

Each fix red-proofed: seen failing with its own sentence, passing when restored.
Requires hub v0.116.0 for the two new event types. MinAgent unchanged (0.131.0).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/stacks/manager.go

@@ -205,6 +205,11 @@ type Manager struct {
 	sysDataPath   string
 	backupRunning func() bool         // mutual exclusion with the backup orchestrator (Change 3)
 	migDoneHook   func(*MigrationJob) // fired on successful completion (decommission policy lives in caller)
+	// deployDoneHook (R-536) fires when an ASYNC deploy reaches its end — ok=true with the observed
+	// state, or ok=false with the reason. The hub event that says „Alkalmazás telepítve" hangs off
+	// this and nothing else: it used to be sent beside the 202 that merely accepted the request, so
+	// an install interrupted five seconds later stayed on the timeline as a completed one.
+	deployDoneHook func(name string, ok bool, detail string)
 	testSeams     *migSeams           // nil in production; tests inject fakes
 	// R-51: docker restart policies for DOWN members of mixed stacks. Keyed by
 	// containerName+"|"+state so a transitioned or recreated container re-reads rather than