Initial commit: Egregore db service

PostgreSQL message storage API with asyncpg connection pooling and full-text search.

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

.gitignore

@@ -0,0 +1,45 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+*.egg-info/
+.eggs/
+dist/
+build/
+
+# Environment
+.env
+.env.*
+*.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Secrets - BE PARANOID
+*.pem
+*.key
+*.crt
+*.p12
+credentials*
+secrets*
+tokens*
+*_secret*
+*_token*
+*.credentials
+
+# Logs and data
+*.log
+*.db
+*.sqlite
+*.sqlite3
+*.backup
+chat.db*
+
+# OS
+.DS_Store
+Thumbs.db