diff --git a/packages/plugins/plugin-dev/package.json b/packages/plugins/plugin-dev/package.json
index 8009333ff2..c074672364 100644
--- a/packages/plugins/plugin-dev/package.json
+++ b/packages/plugins/plugin-dev/package.json
@@ -26,6 +26,7 @@
     "@objectstack/plugin-auth": "workspace:^",
     "@objectstack/plugin-hono-server": "workspace:^",
     "@objectstack/plugin-security": "workspace:^",
+    "@objectstack/plugin-setup": "workspace:^",
     "@objectstack/rest": "workspace:^",
     "@objectstack/runtime": "workspace:^",
     "@objectstack/service-i18n": "workspace:^"
@@ -49,6 +50,9 @@
     "@objectstack/plugin-security": {
       "optional": true
     },
+    "@objectstack/plugin-setup": {
+      "optional": true
+    },
     "@objectstack/rest": {
       "optional": true
     },
@@ -62,6 +66,7 @@
     "@objectstack/plugin-auth": "workspace:*",
     "@objectstack/plugin-hono-server": "workspace:*",
     "@objectstack/plugin-security": "workspace:*",
+    "@objectstack/plugin-setup": "workspace:*",
     "@objectstack/rest": "workspace:*",
     "@objectstack/runtime": "workspace:*",
     "@objectstack/service-i18n": "workspace:*",
diff --git a/packages/plugins/plugin-dev/src/dev-plugin.test.ts b/packages/plugins/plugin-dev/src/dev-plugin.test.ts
index 481c6f667c..6fd4b410d4 100644
--- a/packages/plugins/plugin-dev/src/dev-plugin.test.ts
+++ b/packages/plugins/plugin-dev/src/dev-plugin.test.ts
@@ -75,6 +75,7 @@ describe('DevPlugin', () => {
         objectql: false,
         driver: false,
         auth: false,
+        setup: false,
         security: false,
         server: false,
         rest: false,
@@ -225,6 +226,7 @@ describe('DevPlugin', () => {
         objectql: false,
         driver: false,
         auth: false,
+        setup: false,
         server: false,
         rest: false,
         dispatcher: false,
diff --git a/packages/plugins/plugin-dev/src/dev-plugin.ts b/packages/plugins/plugin-dev/src/dev-plugin.ts
index e4d185dfd7..7de34a8a45 100644
--- a/packages/plugins/plugin-dev/src/dev-plugin.ts
+++ b/packages/plugins/plugin-dev/src/dev-plugin.ts
@@ -339,7 +339,7 @@ export interface DevPluginOptions {
    * Override which services to enable. By default all core services are enabled.
    * Set a service name to `false` to skip it.
    *
-   * Available services: 'objectql', 'driver', 'auth', 'server', 'rest',
+   * Available services: 'objectql', 'driver', 'auth', 'setup', 'server', 'rest',
    * 'dispatcher', 'security', plus any of the 17 CoreServiceName values
    * (e.g. 'cache', 'queue', 'job', 'ui', 'automation', 'workflow', …).
    */
@@ -405,6 +405,7 @@ export interface DevPluginOptions {
  * | ObjectQL     | `@objectstack/objectql`           | Data engine (query, CRUD, hooks)          |
  * | Driver       | `@objectstack/driver-memory`      | In-memory database (no DB install)        |
  * | Auth         | `@objectstack/plugin-auth`        | Authentication with dev credentials       |
+ * | Setup        | `@objectstack/plugin-setup`       | Platform Setup App (admin UI navigation)  |
  * | Security     | `@objectstack/plugin-security`    | RBAC, RLS, field-level masking            |
  * | HTTP Server  | `@objectstack/plugin-hono-server` | HTTP server on configured port            |
  * | REST API     | `@objectstack/rest`               | Auto-generated CRUD + metadata endpoints  |
@@ -530,6 +531,18 @@ export class DevPlugin implements Plugin {
       }
     }
 
+    // 3c. Setup Plugin — platform Setup App with area-based navigation
+    if (enabled('setup')) {
+      try {
+        const { SetupPlugin } = await import('@objectstack/plugin-setup') as any;
+        const setupPlugin = new SetupPlugin();
+        this.childPlugins.push(setupPlugin);
+        ctx.logger.info('  ✔ Setup plugin enabled (platform Setup App)');
+      } catch {
+        ctx.logger.debug('  ℹ @objectstack/plugin-setup not installed — skipping Setup App');
+      }
+    }
+
     // 4. Auth Plugin
     if (enabled('auth')) {
       try {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2eb4ceca5a..48fc311e40 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -868,6 +868,9 @@ importers:
       '@objectstack/plugin-security':
         specifier: workspace:*
         version: link:../plugin-security
+      '@objectstack/plugin-setup':
+        specifier: workspace:*
+        version: link:../plugin-setup
       '@objectstack/rest':
         specifier: workspace:*
         version: link:../../rest