Summary

• fixes [UX] Overview stat card shows "0 Workers active" with "6 paused" subtitle — confusing for new users #1140 by showing paused workers as the overview headline when every visible worker is paused
• fixes the remaining [Bug] Emily chat returns AI provider error in /app/workers/new (worker creation broken) #1137 symptom where Emily emitted an AI-provider error after a successful Workers tool result by falling back to a deterministic tool-result summary
• adds regression coverage for the overview all-paused state and the chat provider-outage-after-tool path

Issue status

• [Bug] Brain folder creation always fails — "Could not create the folder" toast for all users #1138: already fixed on current main and live OSS; verified by creating and deleting a temporary Brain folder through workers.floom.dev
• [Bug] Emily's Workers tool returns 0 workers even when workspace has existing workers #1139: already fixed on current main and live OSS; verified Emily workers__list_all returned count 101
• [UX] Overview stat card shows "0 Workers active" with "6 paused" subtitle — confusing for new users #1140: fixed in this PR
• [Bug] Emily chat returns AI provider error in /app/workers/new (worker creation broken) #1137: partially fixed in current main for worker-author provider wiring; this PR fixes the observed remaining chat error after successful tool results

Verification

• python3 -m pytest apps/api/tests/test_chat_phase1_backend.py::test_worker_list_fallback_summary_uses_successful_tool_result apps/api/tests/test_chat_phase1_backend.py::test_stream_chat_uses_tool_result_when_provider_fails_after_workers_tool -q
• python3 -m pytest apps/api/tests/test_1137_worker_author_provider.py apps/api/tests/test_1139_emily_workers_admin.py apps/api/tests/test_brain_assistant_visibility_api.py apps/api/tests/test_brain_flat_contract_732.py apps/api/tests/test_worker_count_scoping_consistency.py apps/api/tests/test_1080_example_workers_excluded_from_overview.py -q
• npm test -- tests/overview-worker-metric.test.ts
• npm run lint (0 errors; existing warnings only)
• npm run build
• Browser DOM verification: local /overview with mocked all-paused payload rendered 6 Workers paused 0 active
• Live OSS: POST/DELETE Brain folder via workers.floom.dev succeeded; /workers and /system/overview returned 200; Emily Workers tool returned count 101

Notes

• Cloud live verification was blocked by stale auth cookies; unauthenticated cloud proxy requests return 401.
• Chrome screenshot capture hangs in this host even on trivial pages, so browser verification used DOM text evidence instead of a screenshot artifact.