feat: 0.11.7 — Stale data cleanup + FileBrowser sync after migration + deploy title fix

- Detect stale data on non-active storage paths after migration; show on
  deploy/settings page with size info and two-step delete confirmation
- Add POST /api/storage/stale-cleanup handler with safety checks (active
  path protection, registered-path validation, ProtectedHDDPaths guard)
- Export ProtectedHDDPaths() from stacks package for reuse in web handlers
- Sync FileBrowser mounts after successful app data migration
- Deploy page title/h2 now shows "Beállítások" for already-deployed apps
  instead of always showing "Telepítés"
- Also add delete-old-data button on migration-done card in migrate.html

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,13 @@
 ## Changelog
 
+### What was just completed (2026-02-17 session 34)
+- **v0.11.7 — Stale Data Cleanup + FileBrowser Sync + UI Title Fix:**
+  - **Feature: Stale data cleanup** — After app data migration, the deploy/settings page now shows leftover data on previous storage paths with size info and a delete button. Two-step confirmation required before deletion. Protected paths (storage root, media, Dokumentumok, appdata) cannot be deleted. Also available immediately after migration on the migration-done page.
+  - **Fix: FileBrowser sync after migration** — `syncFileBrowserMounts()` now called after successful data migration, ensuring FileBrowser mounts reflect the current storage layout.
+  - **Fix: Deploy page title** — Already-deployed apps now show "Beállítások" (Settings) instead of "Telepítés" (Deploy) in both the browser page title and the `<h2>` heading.
+  - **Internal: Exported `ProtectedHDDPaths()`** from stacks package for reuse in web handlers.
+  - **Files modified (7):** `internal/stacks/delete.go`, `internal/web/handlers.go`, `internal/web/storage_handlers.go`, `internal/web/templates/deploy.html`, `internal/web/templates/migrate.html`, `internal/web/templates/style.css`
+
 ### What was just completed (2026-02-17 session 33)
 - **v0.11.6 — FileBrowser Auto-Mount Sync + UI Polish (3 fixes):**
   - **Feature: FileBrowser auto-mount sync** — Added `syncFileBrowserMounts()` and `generateFileBrowserCompose()` to `handlers.go`. After a storage path is added (via storage init wizard) or removed, the controller regenerates `/opt/docker/stacks/filebrowser/docker-compose.yml` with volume mounts for all registered paths (`/mnt/hdd_1:/srv/hdd_1` etc.), then recreates the FileBrowser container. Domain is read from FileBrowser's `.env`. If FileBrowser isn't deployed, the function silently returns. The generated compose is self-contained (no env vars).

controller/internal/stacks/delete.go

@@ -33,8 +33,8 @@ type HDDPath struct {
 	Exists    bool   `json:"exists"`
 }
 
-// protectedHDDPaths returns the set of top-level HDD directories that must never be deleted.
+// ProtectedHDDPaths returns the set of top-level HDD directories that must never be deleted.
-func protectedHDDPaths(hddPath string) map[string]bool {
+func ProtectedHDDPaths(hddPath string) map[string]bool {
 	if hddPath == "" {
 		return nil
 	}
@@ -100,7 +100,7 @@ func (m *Manager) DeleteStack(name string, removeHDDData bool) (*DeleteResponse,
 	}
 
 	// Step 4: Handle HDD data
-	protected := protectedHDDPaths(hddPath)
+	protected := ProtectedHDDPaths(hddPath)
 	for _, mount := range hddMounts {
 		// Safety: never delete protected top-level dirs
 		cleanPath := filepath.Clean(mount)
@@ -165,7 +165,7 @@ func (m *Manager) GetStackHDDData(name string) (*HDDDataResponse, error) {
 	}
 
 	mounts := ParseComposeHDDMounts(stack.ComposePath, hddPath)
-	protected := protectedHDDPaths(hddPath)
+	protected := ProtectedHDDPaths(hddPath)
 
 	for _, mount := range mounts {
 		cleanPath := filepath.Clean(mount)

controller/internal/web/handlers.go

@@ -164,7 +164,11 @@ func (s *Server) deployHandler(w http.ResponseWriter, r *http.Request, name stri
 	stack, _ := s.stackMgr.GetStack(name)
 	alreadyDeployed := appCfg != nil && appCfg.Deployed
 
-	data := s.baseData("deploy", meta.DisplayName+" — Telepítés")
+	pageTitle := meta.DisplayName + " — Telepítés"
+	if alreadyDeployed {
+		pageTitle = meta.DisplayName + " — Beállítások"
+	}
+	data := s.baseData("deploy", pageTitle)
 	data["Stack"] = stack
 	data["Meta"] = meta
 	data["AppConfig"] = appCfg
@@ -195,6 +199,11 @@ func (s *Server) deployHandler(w http.ResponseWriter, r *http.Request, name stri
 			data["StorageInfo"] = storageInfo
 			data["OtherStoragePaths"] = s.otherStoragePathsForStack(name)
 		}
+		// Stale data from previous migrations (only for deployed apps with HDD data)
+		staleData := s.findStaleStorageData(name)
+		if len(staleData) > 0 {
+			data["StaleData"] = staleData
+		}
 	}
 
 	// Memory info for deploy page (only for non-deployed apps)

controller/internal/web/storage_handlers.go

@@ -140,6 +140,8 @@ func (s *Server) storageAPIHandler(w http.ResponseWriter, r *http.Request) {
 		s.storageMigrateAPIHandler(w, r)
 	case path == "/api/storage/migrate/status" && r.Method == http.MethodGet:
 		s.storageMigrateStatusAPIHandler(w, r)
+	case path == "/api/storage/stale-cleanup" && r.Method == http.MethodPost:
+		s.staleDataCleanupHandler(w, r)
 	default:
 		http.NotFound(w, r)
 	}
@@ -452,6 +454,8 @@ func (s *Server) storageMigrateAPIHandler(w http.ResponseWriter, r *http.Request
 			s.logger.Printf("[ERROR] Migration failed: stack=%s: %v", req.StackName, err)
 		} else {
 			s.logger.Printf("[INFO] Migration complete: stack=%s → %s", req.StackName, req.TargetPath)
+			// Sync FileBrowser mounts (storage paths may now have new app data)
+			go s.syncFileBrowserMounts()
 		}
 		close(progressCh)
 	}()
@@ -619,3 +623,189 @@ func (s *Server) storageLabelForPath(path string) string {
 	}
 	return strings.TrimPrefix(path, "/mnt/")
 }
+
+// StaleStorageData describes leftover data on a non-active storage path.
+type StaleStorageData struct {
+	Path      string   // e.g., "/mnt/hdd_placeholder"
+	Label     string   // e.g., "Külső tárhely (hdd_placeholder)"
+	Mounts    []string // host-side paths with data
+	SizeHuman string   // e.g., "48 MB"
+	SizeBytes int64
+}
+
+// findStaleStorageData detects leftover app data on non-active storage paths.
+// This happens after migration: the old data stays on the previous storage path.
+func (s *Server) findStaleStorageData(stackName string) []StaleStorageData {
+	appCfg := s.stackMgr.LoadAppConfigByName(stackName)
+	if appCfg == nil {
+		return nil
+	}
+	currentHDDPath := appCfg.Env["HDD_PATH"]
+	if currentHDDPath == "" {
+		return nil
+	}
+
+	stack, ok := s.stackMgr.GetStack(stackName)
+	if !ok {
+		return nil
+	}
+
+	var result []StaleStorageData
+
+	// Check all registered storage paths except the current one
+	for _, sp := range s.settings.GetStoragePaths() {
+		if sp.Path == currentHDDPath {
+			continue
+		}
+
+		// Use ParseComposeHDDMounts to find what dirs WOULD exist on this path
+		mounts := stacks.ParseComposeHDDMounts(stack.ComposePath, sp.Path)
+		if len(mounts) == 0 {
+			continue
+		}
+
+		// Check which mounts actually have data
+		var existingMounts []string
+		var totalSize int64
+		for _, m := range mounts {
+			info, err := os.Stat(m)
+			if err != nil || !info.IsDir() {
+				continue
+			}
+			size := dirSizeInt64(m)
+			if size > 0 {
+				existingMounts = append(existingMounts, m)
+				totalSize += size
+			}
+		}
+
+		if len(existingMounts) == 0 {
+			continue
+		}
+
+		label := sp.Label
+		if label == "" {
+			label = settings.InferStorageLabel(sp.Path)
+		}
+
+		result = append(result, StaleStorageData{
+			Path:      sp.Path,
+			Label:     label,
+			Mounts:    existingMounts,
+			SizeHuman: dirSizeBytesHuman(totalSize),
+			SizeBytes: totalSize,
+		})
+	}
+
+	return result
+}
+
+// staleDataCleanupHandler handles POST /api/storage/stale-cleanup.
+// Deletes leftover app data from a previous storage path after migration.
+func (s *Server) staleDataCleanupHandler(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		StackName string `json:"stack_name"`
+		StalePath string `json:"stale_path"` // the old storage root, e.g., "/mnt/hdd_placeholder"
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		jsonError(w, "Érvénytelen kérés", http.StatusBadRequest)
+		return
+	}
+
+	if req.StackName == "" || req.StalePath == "" {
+		jsonError(w, "Hiányos paraméterek", http.StatusBadRequest)
+		return
+	}
+
+	// Verify the app exists and is deployed
+	stack, ok := s.stackMgr.GetStack(req.StackName)
+	if !ok {
+		jsonError(w, "Alkalmazás nem található: "+req.StackName, http.StatusNotFound)
+		return
+	}
+
+	appCfg := s.stackMgr.LoadAppConfigByName(req.StackName)
+	if appCfg == nil || !appCfg.Deployed {
+		jsonError(w, "Az alkalmazás nincs telepítve", http.StatusBadRequest)
+		return
+	}
+
+	currentHDDPath := appCfg.Env["HDD_PATH"]
+	if currentHDDPath == "" {
+		jsonError(w, "Az alkalmazásnak nincs HDD_PATH beállítva", http.StatusBadRequest)
+		return
+	}
+
+	// SAFETY: StalePath must NOT be the current HDD_PATH
+	if req.StalePath == currentHDDPath {
+		jsonError(w, "Az aktív tárhely adatai nem törölhetők! Ez az alkalmazás aktuális adattárolója.", http.StatusForbidden)
+		return
+	}
+
+	// SAFETY: StalePath must be a registered storage path
+	found := false
+	for _, sp := range s.settings.GetStoragePaths() {
+		if sp.Path == req.StalePath {
+			found = true
+			break
+		}
+	}
+	if !found {
+		jsonError(w, "A megadott útvonal nem regisztrált adattároló", http.StatusBadRequest)
+		return
+	}
+
+	// Find mounts to delete
+	mounts := stacks.ParseComposeHDDMounts(stack.ComposePath, req.StalePath)
+	if len(mounts) == 0 {
+		jsonError(w, "Nem találhatók törlendő adatok", http.StatusNotFound)
+		return
+	}
+
+	// Protected paths check
+	protected := stacks.ProtectedHDDPaths(req.StalePath)
+
+	var deleted []string
+	var errors []string
+	var totalFreed int64
+
+	for _, mountPath := range mounts {
+		cleanPath := filepath.Clean(mountPath)
+
+		// Safety: never delete protected top-level dirs
+		if protected != nil && protected[cleanPath] {
+			s.logger.Printf("[WARN] Refusing to delete protected HDD path: %s", cleanPath)
+			errors = append(errors, fmt.Sprintf("Védett útvonal, nem törölhető: %s", cleanPath))
+			continue
+		}
+
+		// Verify it actually exists and has data
+		info, err := os.Stat(cleanPath)
+		if err != nil || !info.IsDir() {
+			continue
+		}
+
+		size := dirSizeInt64(cleanPath)
+
+		if err := os.RemoveAll(cleanPath); err != nil {
+			s.logger.Printf("[ERROR] Failed to remove stale data %s: %v", cleanPath, err)
+			errors = append(errors, fmt.Sprintf("Törlés sikertelen: %s — %v", cleanPath, err))
+		} else {
+			s.logger.Printf("[INFO] Removed stale data: %s (%s) for stack %s", cleanPath, dirSizeBytesHuman(size), req.StackName)
+			deleted = append(deleted, cleanPath)
+			totalFreed += size
+		}
+	}
+
+	if len(deleted) == 0 && len(errors) > 0 {
+		jsonError(w, "Törlés sikertelen: "+strings.Join(errors, "; "), http.StatusInternalServerError)
+		return
+	}
+
+	jsonResponse(w, map[string]interface{}{
+		"ok":          true,
+		"deleted":     deleted,
+		"freed_human": dirSizeBytesHuman(totalFreed),
+		"errors":      errors,
+	})
+}

controller/internal/web/templates/deploy.html

@@ -4,7 +4,7 @@
 <div class="page-header">
     <div style="display:flex;align-items:center;gap:.5rem">
         <a href="/stacks" class="btn btn-sm btn-outline">← Vissza</a>
-        <h2>{{.Meta.DisplayName}} — Telepítés</h2>
+        <h2>{{.Meta.DisplayName}} — {{if .AlreadyDeployed}}Beállítások{{else}}Telepítés{{end}}</h2>
     </div>
     <a href="/apps/{{.Meta.Slug}}" class="btn btn-sm btn-outline">ℹ️ Részletek</a>
 </div>
@@ -58,6 +58,36 @@
         {{end}}
     </div>
     {{end}}
+    {{if .StaleData}}
+    <div class="deploy-stale-data">
+        <h4>🗑️ Korábbi adatok</h4>
+        <p class="form-hint" style="margin-bottom:1rem">
+            Az alkalmazás adatainak másolata megtalálható egy másik tárolón is.
+            Ez általában áthelyezés után marad hátra.
+        </p>
+        {{range .StaleData}}
+        <div class="stale-data-item">
+            <div class="settings-grid" style="margin-bottom:.75rem">
+                <div class="settings-row">
+                    <span class="settings-label">Tárhely</span>
+                    <span class="settings-value">{{.Label}} <span class="mono" style="color:var(--text-secondary)">({{.Path}})</span></span>
+                </div>
+                <div class="settings-row">
+                    <span class="settings-label">Méret</span>
+                    <span class="settings-value mono">{{.SizeHuman}}</span>
+                </div>
+                <div class="settings-row">
+                    <span class="settings-label">Mappák</span>
+                    <span class="settings-value mono" style="font-size:.85rem">{{range .Mounts}}{{.}}<br>{{end}}</span>
+                </div>
+            </div>
+            <button class="btn btn-sm btn-danger" onclick="deleteStaleData('{{$.Meta.Slug}}', '{{.Path}}', this)">
+                🗑️ Korábbi adatok törlése
+            </button>
+        </div>
+        {{end}}
+    </div>
+    {{end}}
     {{end}}
 
     {{if and (not .AlreadyDeployed) .MemoryInfo}}
@@ -236,6 +266,52 @@ function generatePassword(fieldId) {
     document.getElementById(fieldId).value = pass;
 }
 
+function deleteStaleData(stackName, stalePath, btn) {
+    if (!confirm('Biztosan törölni szeretnéd a korábbi adatokat?\n\nTárhely: ' + stalePath + '\n\n⚠️ Ez a művelet visszavonhatatlan!\nElőtte győződj meg róla, hogy az alkalmazás az új tárolóról megfelelően működik.')) {
+        return;
+    }
+    // Second confirmation
+    if (!confirm('UTOLSÓ FIGYELMEZTETÉS!\n\nA törlés visszavonhatatlan. Biztosan folytatod?')) {
+        return;
+    }
+
+    btn.disabled = true;
+    btn.textContent = 'Törlés folyamatban...';
+
+    fetch('/api/storage/stale-cleanup', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({stack_name: stackName, stale_path: stalePath})
+    })
+    .then(function(r) { return r.json(); })
+    .then(function(data) {
+        if (!data.ok) {
+            alert('Hiba: ' + (data.error || 'Ismeretlen hiba'));
+            btn.disabled = false;
+            btn.textContent = '🗑️ Korábbi adatok törlése';
+            return;
+        }
+        var msg = '✅ Korábbi adatok törölve!\n\nFelszabadított hely: ' + (data.freed_human || '?');
+        if (data.errors && data.errors.length > 0) {
+            msg += '\n\n⚠️ Néhány hiba történt:\n' + data.errors.join('\n');
+        }
+        alert(msg);
+        // Remove the stale data card from DOM
+        var item = btn.closest('.stale-data-item');
+        if (item) item.remove();
+        // If no more stale items, remove the whole section
+        var container = document.querySelector('.deploy-stale-data');
+        if (container && container.querySelectorAll('.stale-data-item').length === 0) {
+            container.remove();
+        }
+    })
+    .catch(function(e) {
+        alert('Hálózati hiba: ' + e.message);
+        btn.disabled = false;
+        btn.textContent = '🗑️ Korábbi adatok törlése';
+    });
+}
+
 document.getElementById('deploy-form').addEventListener('submit', async function(e) {
     e.preventDefault();
 

controller/internal/web/templates/migrate.html

@@ -79,8 +79,19 @@
         Az alkalmazás az új tárolóról fut.<br>
         A régi adatok a korábbi helyen megmaradtak biztonsági másolatként.
     </p>
-    <div style="margin-top:1.5rem;display:flex;gap:.75rem">
+    <div class="alert alert-warning" style="margin-top:1rem">
-        <a href="/stacks" class="btn btn-primary">Alkalmazások megtekintése</a>
+        <strong>Javasolt lépések:</strong>
+        <ol style="margin:.5rem 0 0 1rem;padding:0">
+            <li>Ellenőrizd, hogy az alkalmazás megfelelően működik</li>
+            <li>Győződj meg róla, hogy minden adat megtalálható</li>
+            <li>Ha minden rendben, törölheted a korábbi adatokat</li>
+        </ol>
+    </div>
+    <div style="margin-top:1.5rem;display:flex;gap:.75rem;flex-wrap:wrap">
+        <a href="/stacks/{{.Meta.Slug}}/deploy" class="btn btn-primary">Alkalmazások megtekintése</a>
+        <button id="migrate-delete-old-btn" class="btn btn-outline btn-danger" onclick="deleteOldMigrationData()" style="display:none">
+            🗑️ Korábbi adatok törlése
+        </button>
         <a href="/settings" class="btn btn-outline">Beállítások</a>
     </div>
 </div>
@@ -183,6 +194,46 @@ function showMigDone() {
     document.getElementById('migrate-progress-card').style.display = 'none';
     document.getElementById('migrate-done-card').style.display = 'block';
     document.getElementById('migrate-done-card').scrollIntoView({behavior:'smooth'});
+    // Show the delete button (old data is at the source path)
+    document.getElementById('migrate-delete-old-btn').style.display = '';
+}
+
+function deleteOldMigrationData() {
+    var oldPath = '{{.CurrentHDDPath}}';
+    if (!confirm('Biztosan törölni szeretnéd a korábbi adatokat?\n\nTárhely: ' + oldPath + '\n\n⚠️ Ez a művelet visszavonhatatlan!\nElőtte győződj meg róla, hogy az alkalmazás az új tárolóról megfelelően működik.')) {
+        return;
+    }
+    if (!confirm('UTOLSÓ FIGYELMEZTETÉS!\n\nA törlés visszavonhatatlan. Biztosan folytatod?')) {
+        return;
+    }
+
+    var btn = document.getElementById('migrate-delete-old-btn');
+    btn.disabled = true;
+    btn.textContent = 'Törlés folyamatban...';
+
+    fetch('/api/storage/stale-cleanup', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({stack_name: stackName, stale_path: oldPath})
+    })
+    .then(function(r) { return r.json(); })
+    .then(function(data) {
+        if (!data.ok) {
+            alert('Hiba: ' + (data.error || 'Ismeretlen hiba'));
+            btn.disabled = false;
+            btn.textContent = '🗑️ Korábbi adatok törlése';
+            return;
+        }
+        btn.textContent = '✅ Korábbi adatok törölve (' + (data.freed_human || '') + ')';
+        btn.classList.remove('btn-danger');
+        btn.classList.add('btn-outline');
+        btn.onclick = null;
+    })
+    .catch(function(e) {
+        alert('Hálózati hiba: ' + e.message);
+        btn.disabled = false;
+        btn.textContent = '🗑️ Korábbi adatok törlése';
+    });
 }
 </script>
 

controller/internal/web/templates/style.css

@@ -2231,3 +2231,37 @@ a.stat-card:hover {
 .storage-app-link:hover {
     text-decoration: underline;
 }
+/* Stale data cleanup */
+.deploy-stale-data {
+    background: var(--card-bg);
+    border: 1px solid var(--orange);
+    border-radius: var(--radius);
+    padding: 1.5rem;
+    margin-top: 1rem;
+}
+
+.deploy-stale-data h4 {
+    margin: 0 0 0.5rem 0;
+    color: var(--orange);
+}
+
+.stale-data-item {
+    padding: 1rem;
+    background: rgba(255, 165, 0, 0.05);
+    border-radius: var(--radius);
+    margin-bottom: 0.75rem;
+}
+
+.stale-data-item:last-child {
+    margin-bottom: 0;
+}
+
+.btn-danger {
+    background: var(--red);
+    color: white;
+    border-color: var(--red);
+}
+
+.btn-danger:hover {
+    opacity: 0.85;
+}