refactor: remove dead code (pollTaskStatus, routeLoadingTimer)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/frontend/src/router/index.ts

@@ -83,14 +83,4 @@ router.beforeEach((to, from, next) => {
   }
 })
 
-// Track route loading state for page transitions
-let routeLoadingTimer: ReturnType<typeof setTimeout> | null = null
-
-router.afterEach(() => {
-  if (routeLoadingTimer) clearTimeout(routeLoadingTimer)
-  routeLoadingTimer = setTimeout(() => {
-    routeLoadingTimer = null
-  }, 300)
-})
-
 export default router

web/frontend/src/stores/processing.ts

@@ -121,10 +121,5 @@ export const useProcessingStore = defineStore('processing', () => {
     return taskId
   }
 
-  async function pollTaskStatus(taskId: string) {
-    const res = await api.get(`/processing/status/${taskId}`)
-    return res.data
-  }
-
-  return { currentTask, tasks, logs, taskSource, connectWebSocket, disconnectWebSocket, startTask, pollTaskStatus }
+  return { currentTask, tasks, logs, taskSource, connectWebSocket, disconnectWebSocket, startTask }
 })