Fix Advoware timestamp parsing bug causing sync loops

- Change .replace(tzinfo=BERLIN_TZ) to BERLIN_TZ.localize() for correct pytz TZ handling
- Update Phase 4 to use proper TZ localization for adv_ts
- Add documentation section on correct Advoware timestamp handling
- Add .gitignore, GOOGLE_SETUP_README.md, and check_db.py utility

bitbylaw/check_db.py

@@ -0,0 +1,19 @@
+import asyncio
+import asyncpg
+from config import Config
+
+async def check_db():
+    conn = await asyncpg.connect(
+        host=Config.POSTGRES_HOST or 'localhost',
+        user=Config.POSTGRES_USER,
+        password=Config.POSTGRES_PASSWORD,
+        database=Config.POSTGRES_DB_NAME,
+        timeout=10
+    )
+    try:
+        row = await conn.fetchrow('SELECT * FROM calendar_sync WHERE sync_id = $1', '1329fa1f-9de5-49dc-95c6-a13525f315c5')
+        print('DB Row:', dict(row) if row else 'No row found')
+    finally:
+        await conn.close()
+
+asyncio.run(check_db())