feat: fix tooltip shortcuts and add dev server config dialog

Tooltip fixes (PR #177 follow-up):
- Remove duplicate title attr on Settings button that caused double-tooltip
- Restore keyboard shortcut hints in tooltip text: Settings (,), Reset (R)
- Clean up spurious peer markers in package-lock.json

Dev server config dialog:
- Add DevServerConfigDialog component for custom dev commands
- Open config dialog automatically when start fails with "no dev command"
- Add useDevServerConfig/useUpdateDevServerConfig hooks
- Add updateDevServerConfig API function
- Add config gear button next to dev server start

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

ui/src/hooks/useProjects.ts

@@ -4,7 +4,7 @@
 
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
 import * as api from '../lib/api'
-import type { FeatureCreate, FeatureUpdate, ModelsResponse, ProjectSettingsUpdate, ProvidersResponse, Settings, SettingsUpdate } from '../lib/types'
+import type { DevServerConfig, FeatureCreate, FeatureUpdate, ModelsResponse, ProjectSettingsUpdate, ProvidersResponse, Settings, SettingsUpdate } from '../lib/types'
 
 // ============================================================================
 // Projects
@@ -345,3 +345,36 @@ export function useUpdateSettings() {
     },
   })
 }
+
+// ============================================================================
+// Dev Server Config
+// ============================================================================
+
+// Default config for placeholder (until API responds)
+const DEFAULT_DEV_SERVER_CONFIG: DevServerConfig = {
+  detected_type: null,
+  detected_command: null,
+  custom_command: null,
+  effective_command: null,
+}
+
+export function useDevServerConfig(projectName: string | null) {
+  return useQuery({
+    queryKey: ['dev-server-config', projectName],
+    queryFn: () => api.getDevServerConfig(projectName!),
+    enabled: !!projectName,
+    staleTime: 30_000,
+    placeholderData: DEFAULT_DEV_SERVER_CONFIG,
+  })
+}
+
+export function useUpdateDevServerConfig(projectName: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (customCommand: string | null) =>
+      api.updateDevServerConfig(projectName, customCommand),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['dev-server-config', projectName] })
+    },
+  })
+}