feat(web): add Ops page and proxy control on :8600

Vite listens on 8500 and proxies /ops to the control plane. Admin Ops UI
covers pause/resume, scale, drain/force restart, and restart-needed banner.

Co-authored-by: Nasyarobby Putra <nasyarobby@gmail.com>

packages/server/ecosystem.dev.cjs

@@ -0,0 +1,38 @@
+/**
+ * Dev ecosystem for `pnpm dev:pm2`.
+ * Prefer starting children via control.js (desired state) rather than this file.
+ * Kept as a reference / fallback: `pm2 start packages/server/ecosystem.dev.cjs`
+ */
+const path = require("path");
+
+const root = path.resolve(__dirname, "../..");
+
+module.exports = {
+  apps: [
+    {
+      name: "jflow-http",
+      script: path.join(__dirname, "server.js"),
+      cwd: root,
+      instances: 1,
+      exec_mode: "fork",
+      env: {
+        JFLOW_ROLE: "api",
+        PORT: "8700",
+        JFLOW_CORS_ORIGIN: "http://localhost:8500",
+        JFLOW_CONFIG_GENERATION: "1",
+      },
+    },
+    {
+      name: "jflow-worker",
+      script: path.join(__dirname, "worker.js"),
+      cwd: root,
+      instances: 1,
+      exec_mode: "fork",
+      env: {
+        JFLOW_ROLE: "worker",
+        JFLOW_CORS_ORIGIN: "http://localhost:8500",
+        JFLOW_CONFIG_GENERATION: "1",
+      },
+    },
+  ],
+};