fix(core): reconnect stale agent pools on JDBC errors

apps/desktop/src/lib/connection/__tests__/connectionHealth.spec.ts

@@ -0,0 +1,15 @@
+import { describe, expect, it } from "vitest";
+import { shouldMarkDisconnected } from "@/lib/connection/connectionHealth";
+
+describe("connectionHealth", () => {
+  it("marks localized and JDBC communication errors as disconnected", () => {
+    expect(shouldMarkDisconnected("Agent RPC error (-1): dm.jdbc.driver.DMException: 网络通信异常")).toBe(true);
+    expect(shouldMarkDisconnected("Agent RPC error (-1): com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure")).toBe(true);
+    expect(shouldMarkDisconnected("Agent RPC error (-1): java.sql.SQLRecoverableException: IO 错误: Got minus one from a read call")).toBe(true);
+  });
+
+  it("does not mark ordinary SQL or authentication errors as disconnected", () => {
+    expect(shouldMarkDisconnected("syntax error at or near SELECT")).toBe(false);
+    expect(shouldMarkDisconnected("Access denied for user root")).toBe(false);
+  });
+});

apps/desktop/src/lib/connection/connectionHealth.ts

@@ -24,6 +24,12 @@ const CONNECTION_ERROR_PATTERNS = [
   "input/output error",
   "关闭的连接",
   "连接已关闭",
+  "网络通信异常",
+  "通信异常",
+  "communications link failure",
+  "sqlrecoverableexception",
+  "sqlnontransientconnectionexception",
+  "sqltransientconnectionexception",
   "i/o error",
   "no route to host",
 ];