v0.10.0: Phase B — Storage Management UI Polish & Health Severity Fix

- Health severity fix: mount-point check downgraded from issue (FAIL) to warning (WARN)
- All storage health messages translated to Hungarian
- Success flash messages for all storage operations
- Edit storage path labels (inline edit UI + backend)
- App details per storage path on settings page (expandable list with names + sizes)
- Storage badge on stacks page showing which storage each app uses
- Deploy dropdown with free space display and low-space warning (<20%)
- Filesystem & disk info on settings page (ext4/btrfs, device, model via findmnt)
- Backup page storage context with per-app storage label badges

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

controller/internal/monitor/healthcheck.go

@@ -174,21 +174,22 @@ func checkStoragePaths(paths []settings.StoragePath) (issues, warnings []string)
 	for _, sp := range paths {
 		// Path accessible?
 		if _, err := os.Stat(sp.Path); err != nil {
-			warnings = append(warnings, fmt.Sprintf("Storage path not accessible: %s", sp.Path))
+			warnings = append(warnings, fmt.Sprintf("Adattároló nem elérhető: %s", sp.Path))
 			continue
 		}
 
-		// Mount point check
+		// Mount point check — warning, not issue (avoids false FAIL on demo/test environments)
 		if !system.IsMountPoint(sp.Path) {
-			issues = append(issues, fmt.Sprintf("Storage path %s is NOT a mount point — data writes to SSD!", sp.Path))
+			warnings = append(warnings, fmt.Sprintf(
+				"Az adattároló (%s) nem külön meghajtón van — az adatok a rendszermeghajtóra íródnak", sp.Path))
 		}
 
 		// Disk usage
 		if di := system.GetDiskUsage(sp.Path); di != nil {
 			if di.UsedPercent >= 95 {
-				issues = append(issues, fmt.Sprintf("Storage %s nearly full: %.0f%%", sp.Path, di.UsedPercent))
+				issues = append(issues, fmt.Sprintf("Adattároló majdnem megtelt: %s (%.0f%%)", sp.Path, di.UsedPercent))
 			} else if di.UsedPercent >= 90 {
-				warnings = append(warnings, fmt.Sprintf("Storage %s usage high: %.0f%%", sp.Path, di.UsedPercent))
+				warnings = append(warnings, fmt.Sprintf("Adattároló használat magas: %s (%.0f%%)", sp.Path, di.UsedPercent))
 			}
 		}
 	}