feat: Replace DB component tools with filesystem-based user-components/

Components are now .vue files in user-components/<folder>/ parsed at runtime.
Replaces 6 DB MCP tools with 2 (list_fs_components, load_fs_component).
Adds vue-parser, fs-components API, and file watcher for live reload.

server/services/handlers/components-handler.ts

@@ -0,0 +1,67 @@
+/**
+ * Components Handler
+ * Watches user-components/ for .vue and .json file changes
+ * and broadcasts notifications via the sync server.
+ */
+
+import { watch, mkdirSync, existsSync, type FSWatcher } from 'fs'
+import { join } from 'path'
+import { USER_COMPONENTS_DIR } from '../../config'
+
+let componentsWatcher: FSWatcher | null = null
+let debounceTimer: ReturnType<typeof setTimeout> | null = null
+const DEBOUNCE_MS = 400
+
+export function setupComponentsWatcher(workingDir: string, broadcast: (message: string, filter?: (ws: any) => boolean) => void) {
+  const componentsDir = join(workingDir, USER_COMPONENTS_DIR)
+
+  // Auto-create directory if it doesn't exist
+  if (!existsSync(componentsDir)) {
+    try {
+      mkdirSync(componentsDir, { recursive: true })
+    } catch (e: any) {
+      console.error(`[Components] Failed to create ${componentsDir}: ${e.message}`)
+      return
+    }
+  }
+
+  try {
+    componentsWatcher = watch(componentsDir, { recursive: true }, (_, filename) => {
+      if (!filename) return
+
+      // Only watch .vue and .json files
+      if (!filename.endsWith('.vue') && !filename.endsWith('.json')) return
+
+      // Debounce
+      if (debounceTimer) clearTimeout(debounceTimer)
+      debounceTimer = setTimeout(() => {
+        // Extract folder name from path (first segment)
+        const folder = filename.split(/[/\\]/)[0] || ''
+        const file = filename.split(/[/\\]/).pop() || filename
+
+        console.log(`[Components] Change: ${filename}`)
+        broadcast(JSON.stringify({
+          type: 'component-change',
+          folder,
+          file,
+          timestamp: Date.now()
+        }))
+      }, DEBOUNCE_MS)
+    })
+
+    console.log(`[Components] Watching ${componentsDir}`)
+  } catch (e: any) {
+    console.error(`[Components] Watch failed: ${e.message}`)
+  }
+}
+
+export function cleanupComponentsWatcher() {
+  if (componentsWatcher) {
+    componentsWatcher.close()
+    componentsWatcher = null
+  }
+  if (debounceTimer) {
+    clearTimeout(debounceTimer)
+    debounceTimer = null
+  }
+}