feat: Feature 1.2 (NBA stats FastAPI service) + Feature 1.4 (database schema)

Feature 1.2: Python FastAPI microservice wrapping nba_api
- GET /stats/season-avg, /stats/last-n, /stats/splits, /players/search
- Redis caching (24hr/1hr/6hr/7day), 0.6s rate limiting, PRA derived stat
- 27 Python tests passing

Feature 1.4: Complete Supabase database schema
- 6 tables: users, picks, scan_sessions, bets, outcomes, performance
- RLS enabled on all tables with auth.uid() policies
- 3 triggers: auto-create user, updated_at, scan count reset
- 37 schema validation tests passing
- Migration SQL ready, pending manual apply (WSL2 DNS blocker)

Total: 92 tests (65 Node.js + 27 Python), all passing

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

nba-service/app/config.py

@@ -0,0 +1,17 @@
+import os
+
+REDIS_URL = os.getenv("REDIS_URL", "redis://127.0.0.1:6379")
+
+# Cache TTLs in seconds
+SEASON_AVG_TTL = 86400    # 24 hours
+LAST_N_TTL = 3600         # 1 hour
+SPLITS_TTL = 21600        # 6 hours
+PLAYER_SEARCH_TTL = 604800  # 7 days
+
+# nba_api rate limiting
+NBA_API_DELAY = 0.6  # seconds between calls
+NBA_API_RETRY_DELAY = 2.0
+NBA_API_TIMEOUT = 30
+
+# Service
+PORT = int(os.getenv("NBA_SERVICE_PORT", "8000"))