v0.11.0 — Phase C: Storage Init Wizard, Data Migration & Startup Fix

- Startup ping: fire heartbeat + health + hub report immediately on boot
  (5s delay after scheduler start, instead of waiting 5-15 min for first tick)

- Storage init wizard: new internal/storage/ package with disk scanning
  (lsblk -J), format+mount pipeline (sfdisk → mkfs.ext4 → blkid → fstab →
  mount → chown), safety guards (system disk detection, confirmation "FORMÁZÁS"),
  progress channel, auto-register in settings.json

- Data migration: MigrateAppData() with rsync --info=progress2 progress parsing,
  stop/rsync/update-config/start flow, rollback on failure, old data preserved

- New pages: /settings/storage/init (wizard), /stacks/{name}/migrate (migration)
- New API routes: /api/storage/{scan,init,init/status,migrate,migrate/status}
- Deploy page: storage info section for deployed apps (path, size, free, migrate link)
- Settings page: "Mozgatás" button per app in storage path details
- Container: privileged: true, /dev:/dev, /etc/fstab:/host-fstab, /run/udev:/run/udev:ro
- Dockerfile: add util-linux, e2fsprogs, rsync, parted for disk ops

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CONTEXT.md

@@ -7,7 +7,7 @@
 >
 > Ask Claude Code: "Please update CONTEXT.md with what we did today"
 
-Last updated: 2026-02-17 (session 27)
+Last updated: 2026-02-17 (session 28)
 
 ---
 
@@ -20,7 +20,7 @@ Last updated: 2026-02-17 (session 27)
 - Customer deployments use Docker Compose (not Kubernetes) for simplicity
 
 ### felhom-controller (this repo)
-- **Version:** v0.10.0
+- **Version:** v0.11.0
 - **Phase 1:** ✅ COMPLETE — Stack Manager + Deploy Flow
 - **Phase 2:** ✅ COMPLETE — Monitoring & Health (scheduler, CPU/temp, healthchecks.io pings)
 - **Phase 3:** ✅ COMPLETE — Backups (DB dumps, restic integration, manual trigger, **dedicated backup page**)
@@ -30,6 +30,7 @@ Last updated: 2026-02-17 (session 27)
 - **Phase 7:** ✅ COMPLETE — Storage Overview, Per-App Backup Toggles & Limited Restore
 - **Phase A:** ✅ COMPLETE — Storage Paths Foundation (registry, auto-discovery, per-app HDD_PATH, deploy dropdown, health monitoring)
 - **Phase B:** ✅ COMPLETE — Storage Management UI Polish & Health Severity Fix (flash messages, label editing, app details, FS info, deploy free space, backup context)
+- **Phase C:** ✅ COMPLETE — Storage Init Wizard, Data Migration & Startup Fix (disk scan/format/mount wizard, rsync-based migration, startup pings)
 - **First app deployed:** Paperless-ngx on demo-felhom.eu (2026-02-13)
 - **Running on:** demo-felhom (N100 mini PC) at 192.168.0.162:8080
 - **All Phase 1-5 features working:** deploy, start/stop/restart/update, logs, health-aware states, auth, monitoring, backups, backup detail page, system monitoring page, settings page