移除对 copilot 的兼容。更新示例和文档，统一使用 session_id 代替 conversationId

dist/server.js

@@ -66,7 +66,7 @@ app.post("/internal/tools/dynamic-http-call", async (req, res) => {
         });
     }
 });
-app.use("/api/v1/copilot/chat", buildChatRouter(sessionBridge, opencodeRuntime));
+app.use("/api/v1/agent/chat", buildChatRouter(sessionBridge, opencodeRuntime));
 const server = app.listen(config.PORT, config.HOST, () => {
     logger.info({ host: config.HOST, port: config.PORT }, "TJWaterAgent listening");
 });