feat(topology): add Guanghan base topology API and Docker deployment

- Independent Flask app with snapshot API (GET /api/v1/bases/guanghan/snapshot)
- Temporal database model with PostgreSQL (ksp_wiki_topology)
- Presentation-driven rendering with DB-stored styles
- Docker image for server deployment

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

topology_api/requirements.txt

@@ -0,0 +1,6 @@
+flask>=3.1
+flask-cors>=6.0
+gunicorn>=25.0
+psycopg>=3.3
+psycopg-binary>=3.3
+python-dotenv>=1.2