feat(frontend): agent activity dropdown (#10416)

## Changes 🏗️


https://github.com/user-attachments/assets/42e1c896-5f3b-447c-aee9-4f5963c217d9

There is now a 🔔 icon on the Navigation bar that shows previous agent
runs and displays real-time agent running status.

If you run an agent, the bell will show on a badge how many agents are
running. If you hover over it, a hint appears. If you click on it, it
opens a dropdown and displays the executions with their status ( _which
should match what we have in library functionality, not design-wise_ ).

I leveraged the existing APIs for this purpose. Most of the run logic is
[encapsulated on this
hook](https://github.com/Significant-Gravitas/AutoGPT/compare/dev...feat/agent-notifications?expand=1#diff-a9e7f2904d6283b094aca19b64c7168e8c66be1d5e0bb454be8978cb98526617)
and is also an independent `<AgentActivityDropdown />` component.

Clicking on an agent run opens that run in the library page.

This new functionality is covered by E2E tests 💆🏽 ✔️ 

## Checklist 📋

### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] The navigation bar layout looks good when logged out
  - [x] The navigation bar layout looks good when logged in
  - [x] Open an agent in the library and click `Run`
- [x] See the real-time activity of the agent running on the navigation
bar bell icon

### For configuration changes:

_No configuration changes needed._

.github/workflows/platform-frontend-ci.yml

@@ -151,7 +151,7 @@ jobs:
           exitOnceUploaded: true
 
   test:
-    runs-on: ubuntu-latest
+    runs-on: big-boi
     needs: setup
     strategy:
       fail-fast: false
@@ -170,12 +170,6 @@ jobs:
       - name: Enable corepack
         run: corepack enable
 
-      - name: Free Disk Space (Ubuntu)
-        uses: jlumbroso/free-disk-space@main
-        with:
-          large-packages: false # slow
-          docker-images: false # limited benefit
-
       - name: Copy default supabase .env
         run: |
           cp ../.env.example ../.env
@@ -184,9 +178,24 @@ jobs:
         run: |
           cp ../backend/.env.example ../backend/.env
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Cache Docker layers
+        uses: actions/cache@v4
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-frontend-test-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-frontend-test-
+
       - name: Run docker compose
         run: |
           docker compose -f ../docker-compose.yml up -d
+        env:
+          DOCKER_BUILDKIT: 1
+          BUILDX_CACHE_FROM: type=local,src=/tmp/.buildx-cache
+          BUILDX_CACHE_TO: type=local,dest=/tmp/.buildx-cache-new,mode=max
 
       - name: Restore dependencies cache
         uses: actions/cache@v4
@@ -205,6 +214,8 @@ jobs:
       - name: Build frontend
         run: pnpm build --turbo
         # uses Turbopack, much faster and safe enough for a test pipeline
+        env:
+          NEXT_PUBLIC_PW_TEST: true
 
       - name: Install Browser 'chromium'
         run: pnpm playwright install --with-deps chromium
@@ -212,13 +223,13 @@ jobs:
       - name: Run Playwright tests
         run: pnpm test:no-build
 
+      - name: Upload Playwright artifacts
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: playwright-report
+
       - name: Print Final Docker Compose logs
         if: always()
         run: docker compose -f ../docker-compose.yml logs
-
-      - uses: actions/upload-artifact@v4
-        if: ${{ !cancelled() }}
-        with:
-          name: playwright-report-${{ matrix.browser }}
-          path: playwright-report/
-          retention-days: 30