feat(v0.11.6): FileBrowser auto-mount sync + UI polish

- Add syncFileBrowserMounts() and generateFileBrowserCompose() to handlers.go
- Call syncFileBrowserMounts() after storage path add (storage init) and remove
- settings.html: red 'Nincs csatolva!' badge → yellow 'Rendszermeghajtón' (badge-warn)
- settings.html: 'Alapértelmezett' button → 'Legyen alapértelmezett' (action clarity)
- storage_init.html: replace disk-usage zone gradient bar with clean progress-bar-task
- style.css: add .badge-warn and .progress-bar-task CSS classes

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

controller/internal/web/handlers.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"os/exec"
 	"path/filepath"
 	"strings"
 	"time"
@@ -795,6 +796,8 @@ func (s *Server) settingsStorageRemoveHandler(w http.ResponseWriter, r *http.Req
 	}
 
 	s.logger.Printf("[INFO] Storage path removed: %s", path)
+	// Sync FileBrowser mounts after storage path removal
+	go s.syncFileBrowserMounts()
 	http.Redirect(w, r, "/settings?storage_msg=success&storage_detail="+url.QueryEscape("Adattároló eltávolítva: "+path), http.StatusFound)
 }
 
@@ -846,3 +849,112 @@ func (s *Server) settingsStorageLabelHandler(w http.ResponseWriter, r *http.Requ
 	s.logger.Printf("[INFO] Storage label updated: %s → %q", path, label)
 	http.Redirect(w, r, "/settings?storage_msg=success&storage_detail="+url.QueryEscape("Megnevezés módosítva: "+label), http.StatusFound)
 }
+
+// syncFileBrowserMounts regenerates FileBrowser's docker-compose.yml
+// with volume mounts for all registered storage paths, then recreates the container.
+func (s *Server) syncFileBrowserMounts() {
+	composePath := "/opt/docker/stacks/filebrowser/docker-compose.yml"
+
+	// Check if FileBrowser stack exists
+	if _, err := os.Stat(composePath); os.IsNotExist(err) {
+		s.logger.Printf("[WARN] FileBrowser stack not found at %s — skipping mount sync", composePath)
+		return
+	}
+
+	// Get all active storage paths
+	paths := s.settings.GetStoragePaths()
+
+	// Read domain from .env
+	envPath := "/opt/docker/stacks/filebrowser/.env"
+	domain := ""
+	if data, err := os.ReadFile(envPath); err == nil {
+		for _, line := range strings.Split(string(data), "\n") {
+			if strings.HasPrefix(line, "DOMAIN=") {
+				domain = strings.TrimPrefix(line, "DOMAIN=")
+				break
+			}
+		}
+	}
+	if domain == "" {
+		s.logger.Printf("[WARN] Cannot read DOMAIN from FileBrowser .env — skipping mount sync")
+		return
+	}
+
+	// Build volume mount lines
+	var storageMounts []string
+	for _, sp := range paths {
+		mountName := filepath.Base(sp.Path) // "/mnt/hdd_1" → "hdd_1"
+		line := fmt.Sprintf("      - %s:/srv/%s", sp.Path, mountName)
+		storageMounts = append(storageMounts, line)
+	}
+
+	// Generate compose from template
+	compose := generateFileBrowserCompose(domain, storageMounts)
+
+	// Write compose
+	if err := os.WriteFile(composePath, []byte(compose), 0644); err != nil {
+		s.logger.Printf("[ERROR] Failed to write FileBrowser compose: %v", err)
+		return
+	}
+
+	// Recreate container
+	cmd := exec.Command("docker", "compose", "up", "-d", "--remove-orphans")
+	cmd.Dir = filepath.Dir(composePath)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		s.logger.Printf("[ERROR] Failed to recreate FileBrowser: %s — %v", string(out), err)
+	} else {
+		s.logger.Printf("[INFO] FileBrowser mounts synced — %d storage path(s)", len(paths))
+	}
+}
+
+// generateFileBrowserCompose returns a FileBrowser docker-compose.yml string
+// with the given domain and storage volume mount lines.
+func generateFileBrowserCompose(domain string, storageMounts []string) string {
+	storageSection := ""
+	if len(storageMounts) > 0 {
+		storageSection = "\n      # Storage paths (auto-generated by felhom-controller)\n" +
+			strings.Join(storageMounts, "\n")
+	}
+
+	return fmt.Sprintf(`# FileBrowser Quantum — Infrastructure file manager
+# Domain: files.%s
+# Deployed by docker-setup.sh — managed by felhom-controller
+# WARNING: Volume mounts are auto-generated. Manual edits will be overwritten.
+
+services:
+  filebrowser:
+    image: gtstef/filebrowser:latest
+    container_name: filebrowser
+    restart: unless-stopped
+    environment:
+      - TZ=Europe/Budapest
+    volumes:
+      - filebrowser_data:/home/filebrowser/data%s
+    networks:
+      - traefik-public
+    deploy:
+      resources:
+        limits:
+          memory: 256M
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:80/"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 15s
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.filebrowser.rule=Host(`+"`"+`files.%s`+"`"+`)"
+      - "traefik.http.routers.filebrowser.entrypoints=websecure"
+      - "traefik.http.routers.filebrowser.tls=true"
+      - "traefik.http.services.filebrowser.loadbalancer.server.port=80"
+      - "traefik.docker.network=traefik-public"
+
+volumes:
+  filebrowser_data:
+
+networks:
+  traefik-public:
+    external: true
+`, domain, storageSection, domain)
+}