Add embedded Express admin API and unified dev workflow.

Move admin backend into this repo (Express + MySQL on :8085) so npm run dev starts both API and Vite, with updated env defaults and Caddy config for gadm.tkmind.cn.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/dev.mjs

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+import { spawn } from 'node:child_process';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
+
+function spawnChild(command, args, label) {
+  const child = spawn(command, args, {
+    cwd: root,
+    stdio: 'inherit',
+    env: process.env,
+  });
+  child.on('exit', (code, signal) => {
+    if (signal) return;
+    if (code && code !== 0) shutdown(code ?? 1);
+  });
+  return child;
+}
+
+let server;
+let web;
+let stopping = false;
+
+function shutdown(code = 0) {
+  if (stopping) return;
+  stopping = true;
+  server?.kill('SIGTERM');
+  web?.kill('SIGTERM');
+  setTimeout(() => process.exit(code), 200).unref();
+}
+
+process.on('SIGINT', () => shutdown(0));
+process.on('SIGTERM', () => shutdown(0));
+
+console.log('==> 启动 Admin API (memind_adm/server)');
+server = spawnChild('node', ['server/index.mjs'], 'server');
+
+setTimeout(() => {
+  console.log('==> 启动管理端 Vite @ http://localhost:5174');
+  web = spawnChild('npm', ['run', 'dev:web'], 'web');
+}, 800);

scripts/gadm-lb.Caddyfile

@@ -0,0 +1,10 @@
+# gadm.tkmind.cn → 本机管理端 (vite preview :5174，API 反代 :8085)
+:8091 {
+	reverse_proxy 127.0.0.1:5174 {
+		flush_interval -1
+		transport http {
+			read_timeout 0
+			write_timeout 0
+		}
+	}
+}