fix: runtime fixes for WSL deployment and integration testing

- Fix RunnableConfig type annotations (dict -> RunnableConfig) for LangGraph compat
- Fix AzDo PR URL parsing (_links.web.href fallback + remoteUrl construction)
- Fix AzDo diff endpoint (use iterations/changes instead of non-existent diffs API)
- Fix _format_diff to read changeEntries field (not changes)
- Fix URL encoding for project names with spaces (Billo App Platform)
- Fix subprocess.run for Windows (replace asyncio.create_subprocess_exec with thread pool)
- Fix SlackClient to handle empty webhook URL gracefully
- Fix notify_request_changes to catch all exceptions (not just ReleaseAgentError)
- Fix JSON parsing to strip whitespace before json.loads
- Add CLAUDE_CMD config field for cross-platform CLI path
- Add run.py for Windows SelectorEventLoop workaround
- Add db port mapping in docker-compose for local dev
- Add comprehensive README sections: WSL setup, known issues, TODO list

docker-compose.yml

@@ -35,6 +35,8 @@ services:
       POSTGRES_USER: agent
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD must be set}
       POSTGRES_DB: agent
+    ports:
+      - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck: