refactor: migrate to monorepo structure with Docker, PocketBase, and e2e tests

- Reorganize into apps/, packages/, docs/, e2e/, pocketbase/ directories
- Add Dockerfiles for web, worker, and PocketBase services
- Add docker-compose.yml for local orchestration
- Add turbo.json for monorepo task management
- Add Playwright e2e test infrastructure
- Add PocketBase backend with migrations
- Remove Vite/Next.js/ESLint/PostCSS config files
- Update package.json with workspace dependencies
- Add .env.example and .dockerignore

apps/web/app/api/time-summary/route.ts

@@ -0,0 +1,55 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { withAuth } from '@/lib/auth';
+import { createPocketBaseClient } from '@/lib/pocketbase';
+
+// GET /api/time-summary — Aggregated time by domain/project/tag
+export const GET = withAuth(async (request: NextRequest, _user) => {
+  const { searchParams } = new URL(request.url);
+  const startDate = searchParams.get('start') || new Date(Date.now() - 30 * 24 * 60 * 60 * 1000).toISOString();
+  const endDate = searchParams.get('end') || new Date().toISOString();
+
+  const pb = createPocketBaseClient();
+
+  const entries = await pb.collection('task_time_entries').getFullList({
+    filter: `started_at >= "${startDate}" && started_at <= "${endDate}"`,
+  });
+
+  const byDomain: Record<string, number> = {};
+  const byProject: Record<string, number> = {};
+  const byTag: Record<string, number> = {};
+  let totalMinutes = 0;
+
+  for (const entry of entries) {
+    const duration = (entry.duration_minutes as number) || 0;
+    totalMinutes += duration;
+
+    // Get task for domain/project/tags
+    const task = await pb.collection('tasks').getOne(entry.task_id as string);
+
+    const domain = task.domain as string;
+    byDomain[domain] = (byDomain[domain] || 0) + duration;
+
+    const projectId = task.project_id as string | undefined;
+    if (projectId) {
+      byProject[projectId] = (byProject[projectId] || 0) + duration;
+    }
+
+    const tags = (task.tags as string[]) || [];
+    for (const tag of tags) {
+      byTag[tag] = (byTag[tag] || 0) + duration;
+    }
+  }
+
+  return NextResponse.json({
+    totalMinutes,
+    byDomain,
+    byProject,
+    byTag,
+    startDate,
+    endDate,
+  }, {
+    headers: {
+      'Cache-Control': 'private, max-age=300, stale-while-revalidate=600',
+    },
+  });
+});