1) Brain Search page (dashboard/pages/brain-search.js): mirrors Agent
Insights; queries /api/brain-index/search with source filter + live
index stats; nav entry + PAGE_TITLES added.
2) Scheduled auto-ingest: scheduler gains endpoint-style jobs
(run_endpoint_via_api) so non-skill maintenance tasks can be cron'd;
new job brain-index-ingest-job.json re-indexes every 30 min.
3) Agents auto-upsert learnings: run_skill wrap-up now calls
record_brain_learning() so each skill run is immediately searchable
in the unified index (best-effort, never breaks the run).
Fixed a regression where AGENT_STATS_FILE def was dropped during the
brain-learning helper insertion (would have broken all skill runs).
Verified live: brain search returns ranked results; run_skill wrap-up
upserts a searchable doc; scheduler imports + job validates.
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