refactor(db)!: adopt project-routed pooled databases

Reorganize WNDB by responsibility and remove legacy scheme endpoints.\n\nRoute analysis and time-series access through project pools, preserve transactional realtime replacement, and refresh GIS materialized views after writes.\n\nAdd database architecture documentation, live pooling coverage, API contract updates, and executable container verification.\n\nBREAKING CHANGE: legacy scheme APIs and flat app.native.wndb module imports are removed.

app/main.py

@@ -8,10 +8,10 @@ from datetime import datetime
 import app.services.project_info as project_info
 from app.api.problem_details import install_problem_details_handlers
 from app.api.v1.rest_router import api_router
-from app.infra.db.timescaledb.database import db as tsdb
-from app.infra.db.postgresql.database import db as pgdb
 from app.infra.db.dynamic_manager import project_connection_manager
 from app.infra.db.metadb.database import close_metadata_engine
+from app.infra.db.timescaledb.sync_pool import close_all_timescale_pools
+from app.native.wndb.core.connection import close_all_project_pools
 from app.services.tjnetwork import open_project
 from app.core.config import settings
 
@@ -30,26 +30,15 @@ async def lifespan(app: FastAPI):
     logger.info("TJWater CloudService is starting...")
     logger.info("**********************************************************")
 
-    # 初始化数据库连接池
-    tsdb.init_pool()
-    pgdb.init_pool()
-
-    await tsdb.open()
-    await pgdb.open()
-
-    # 将数据库实例存储到 app.state，供依赖项使用
-    app.state.db = pgdb
-    logger.info("Database connection pool initialized and stored in app.state")
-
     if project_info.name:
         print(project_info.name)
         open_project(project_info.name)
 
     yield
     # 清理资源
-    await tsdb.close()
-    await pgdb.close()
     await project_connection_manager.close_all()
+    close_all_timescale_pools()
+    close_all_project_pools()
     await close_metadata_engine()
     logger.info("Database connections closed")