docs: Update inventories for PostgreSQL data migration

- DATABASE_INVENTORY: Added data_status section with 469K+ bars loaded
- ML_INVENTORY: Documented MySQL deprecation and PostgreSQL migration
- 6 tickers loaded with 365 days of 5-minute data from Polygon API

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/90-transversal/inventarios/DATABASE_INVENTORY.yml

@@ -2,15 +2,43 @@
 # DATABASE_INVENTORY.yml - Trading Platform Trading Platform
 # ============================================================================
 # Proposito: Inventario consolidado de todos los objetos de base de datos
-# Ultima actualizacion: 2025-12-05
-# Version: 2.0.0
+# Ultima actualizacion: 2026-01-25
+# Version: 2.1.0
 # ============================================================================
 
-version: "2.0.0"
+version: "2.1.0"
 project: "Trading Platform"
 database: "trading_platform"
 engine: "PostgreSQL 16"
-last_updated: "2025-12-05"
+last_updated: "2026-01-25"
+
+# ============================================================================
+# DATA STATUS (2026-01-25)
+# ============================================================================
+data_status:
+  polygon_api_key: "Configured in apps/data-service/.env"
+  data_source: "Polygon.io"
+  last_sync: "2026-01-25"
+  tickers_loaded:
+    - symbol: XAUUSD
+      bars: 70071
+      range: "2025-01-26 to 2026-01-23"
+    - symbol: EURUSD
+      bars: 73783
+      range: "2025-01-26 to 2026-01-23"
+    - symbol: BTCUSD
+      bars: 105107
+      range: "2025-01-24 to 2026-01-24"
+    - symbol: GBPUSD
+      bars: 73493
+      range: "2025-01-26 to 2026-01-23"
+    - symbol: USDJPY
+      bars: 73587
+      range: "2025-01-26 to 2026-01-23"
+    - symbol: AUDUSD
+      bars: 73176
+      range: "2025-01-26 to 2026-01-23"
+  total_bars: 469217
 
 # ============================================================================
 # RESUMEN EJECUTIVO

docs/90-transversal/inventarios/ML_INVENTORY.yml

@@ -1,13 +1,21 @@
 # ML_INVENTORY.yml - Inventario de Componentes ML Engine
 # Trading Platform Trading Platform
-# Ultima actualizacion: 2026-01-07
+# Ultima actualizacion: 2026-01-25
 
 metadata:
-  version: "2.1.0"
-  last_updated: "2026-01-07"
+  version: "2.2.0"
+  last_updated: "2026-01-25"
   epic: "OQI-006"
   description: "Inventario de modelos, features y servicios del ML Engine"
   changelog:
+    - version: "2.2.0"
+      date: "2026-01-25"
+      changes:
+        - "Database migration: MySQL deprecated, now using PostgreSQL exclusively"
+        - "Added src/data/database.py module for PostgreSQL access"
+        - "Created .env with PostgreSQL credentials"
+        - "Updated config/database.yaml to mark MySQL as deprecated"
+        - "Data loaded from Polygon API into local PostgreSQL (6 tickers, 365 days)"
     - version: "2.1.0"
       date: "2026-01-07"
       changes: