phase 17: fix Polygon article_url and published_utc field mapping in metadata persistence

.kiro/specs/stonks-oracle/tasks.md

@@ -182,7 +182,7 @@
   - Verify companies and sources appear in the dashboard and via `curl https://stonks-registry.celestium.life/companies`
   - _Requirements: 1.1, 1.2, 1.3, 2.1_
 
-- [-] 17.2 Wire the scheduler to enqueue ingestion jobs for active sources
+- [x] 17.2 Wire the scheduler to enqueue ingestion jobs for active sources
   - Verify the scheduler service reads active companies and sources from PostgreSQL
   - Verify it enqueues Redis jobs for each source on its polling interval
   - Check scheduler logs: `kubectl logs -n stonks-oracle deployment/scheduler --tail=50`
@@ -190,7 +190,7 @@
   - Fix any issues with the scheduler → source → Redis queue flow
   - _Requirements: 3.1, 3.2_
 
-- [ ] 17.3 Validate ingestion workers pull data from Polygon and persist to MinIO/PostgreSQL
+- [x] 17.3 Validate ingestion workers pull data from Polygon and persist to MinIO/PostgreSQL
   - Check ingestion worker logs for successful API calls to Polygon
   - Verify raw market data artifacts land in MinIO `stonks-raw-market` bucket
   - Verify document metadata rows appear in PostgreSQL `documents` table
@@ -198,7 +198,7 @@
   - Debug and fix any adapter errors (auth, rate limits, response parsing)
   - _Requirements: 4.1, 4.2, 4.3_
 
-- [ ] 17.4 Validate parser normalizes documents and extractor produces intelligence
+- [-] 17.4 Validate parser normalizes documents and extractor produces intelligence
   - Check parser worker logs for document processing
   - Verify normalized text appears in MinIO `stonks-normalized` bucket
   - Verify `parse_quality_score` and `parse_confidence` are set on documents