config: Deprecate MySQL and update PostgreSQL credentials

- PostgreSQL credentials updated to trading_user/trading_dev_2026
- MySQL section marked as deprecated (remote server no longer accessible)
- Table mappings updated to use market_data PostgreSQL schema
- Password redacted from deprecated MySQL config

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

config/database.yaml

@@ -1,32 +1,33 @@
 # Database Configuration
 # ======================
+# Updated: 2026-01-25 - Homologated to use local PostgreSQL only
 
 # PostgreSQL - Primary Database (trading_platform)
+# All data now stored locally in PostgreSQL
 postgres:
   host: "${DB_HOST:-localhost}"
   port: "${DB_PORT:-5432}"
   database: "${DB_NAME:-trading_platform}"
-  user: "${DB_USER:-trading}"
-  password: "${DB_PASSWORD:-trading_dev_2025}"
+  user: "${DB_USER:-trading_user}"
+  password: "${DB_PASSWORD:-trading_dev_2026}"
   pool_size: 10
   max_overflow: 20
   pool_timeout: 30
   pool_recycle: 3600
   echo: false
 
-# MySQL - Remote Database (Historical data - READ ONLY)
+# MySQL - DEPRECATED (2026-01-25)
+# Historical data has been migrated to PostgreSQL market_data schema
+# This section is kept for reference only and is NOT used
 mysql:
-  host: "72.60.226.4"
+  _deprecated: true
+  _deprecation_note: "Use PostgreSQL market_data schema instead"
+  _migration_date: "2026-01-25"
+  host: "72.60.226.4"  # Remote server no longer accessible
   port: 3306
   user: "root"
-  password: "AfcItz2391,."
+  password: "[REDACTED]"
   database: "db_trading_meta"
-  pool_size: 5
-  max_overflow: 10
-  pool_timeout: 30
-  pool_recycle: 3600
-  echo: false
-  read_only: true  # Solo lectura de datos historicos
 
 redis:
   host: "localhost"
@@ -42,8 +43,14 @@ data:
   batch_size: 5000
   cache_ttl: 300  # seconds
   
-# Table names
+# Table names (PostgreSQL market_data schema)
 tables:
-  tickers_agg_data: "tickers_agg_data"
-  tickers_agg_ind_data: "tickers_agg_ind_data"
-  tickers_agg_data_predict: "tickers_agg_data_predict"
+  # Primary OHLCV tables
+  ohlcv_5m: "market_data.ohlcv_5m"
+  ohlcv_15m: "market_data.ohlcv_15m"
+  tickers: "market_data.tickers"
+
+  # Legacy mappings (for backward compatibility)
+  tickers_agg_data: "market_data.ohlcv_5m"      # Maps to 5-minute data
+  tickers_agg_ind_data: "market_data.ohlcv_5m"  # Same table, indicators computed at runtime
+  tickers_agg_data_predict: "ml.predictions"    # ML predictions table