feat(assistant): optimize MCP and custom widget authoring (#6743)

* feat(assistant): optimize MCP and custom widget authoring

* fix(assistant): isolate server-safe JSX analyzer

* refactor(assistant): generate MCP tool staging

* fix(assistant): preserve widget placement follow-up

* fix(ci): allow fast gate to finish

* fix(custom-widgets): address review findings

* fix(custom-widgets): split preview evidence module

* style: format assistant custom widget files

* fix(custom-widgets): sync formatted skill schema

.github/workflows/ci.yml

@@ -51,7 +51,7 @@ jobs:
     name: Fast gate
     if: github.event_name != 'pull_request_target' && (github.event_name != 'workflow_dispatch' || inputs.operation != 'cleanup')
     runs-on: ubuntu-latest
-    timeout-minutes: 15
+    timeout-minutes: 20
     env:
       TURBO_API: ${{ secrets.TURBO_API }}
       TURBO_TEAM: ${{ secrets.TURBO_TEAM }}