diff --git a/libs/k8s-client/src/Model/Io/Keboola/Apps/V1/AppRunSpec.php b/libs/k8s-client/src/Model/Io/Keboola/Apps/V1/AppRunSpec.php
index 768bc387f..dd9d2928a 100644
--- a/libs/k8s-client/src/Model/Io/Keboola/Apps/V1/AppRunSpec.php
+++ b/libs/k8s-client/src/Model/Io/Keboola/Apps/V1/AppRunSpec.php
@@ -88,4 +88,13 @@ class AppRunSpec extends AbstractModel
      * @var string|null
      */
     public $imageVersion = null;
+
+    /**
+     * Mode records how the parent App was running when this run was created.
+     * "prod" (default) for normal runs; "dev" for dev-mode runs. Treat absent
+     * or unknown values as "prod" for compatibility with legacy AppRun CRDs.
+     *
+     * @var string|null
+     */
+    public $mode = null;
 }
diff --git a/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppDevSpec.php b/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppDevSpec.php
new file mode 100644
index 000000000..b7e5bfc0f
--- /dev/null
+++ b/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppDevSpec.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Keboola\K8sClient\Model\Io\Keboola\Apps\V2;
+
+use KubernetesRuntime\AbstractModel;
+
+/**
+ * AppDevSpec carries dev-mode-only knobs. Ignored when AppSpec.mode != "dev".
+ */
+class AppDevSpec extends AbstractModel
+{
+    /**
+     * GitPollInterval is how often the in-pod git-watcher fetches and resets
+     * to origin/<branch>. ISO-8601 duration string (e.g. "1s", "30s", "5m").
+     * Default 1s, min 1s, max 5m (enforced at admission via CRD CEL).
+     *
+     * @var string|null
+     */
+    public $gitPollInterval = null;
+
+    /**
+     * AutoRunSetupOnDepChange controls whether the in-pod git-watcher runs
+     * setup-dev.sh and restarts the app program when a tracked dependency
+     * file changes during a poll cycle. Default true.
+     *
+     * @var bool|null
+     */
+    public $autoRunSetupOnDepChange = null;
+}
diff --git a/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppSpec.php b/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppSpec.php
index 5aa5a196e..0272d55a3 100644
--- a/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppSpec.php
+++ b/libs/k8s-client/src/Model/Io/Keboola/Apps/V2/AppSpec.php
@@ -83,4 +83,20 @@ class AppSpec extends AbstractModel
      * @var AppFeatures|null
      */
     public $features = null;
+
+    /**
+     * Mode selects how the app is run: "prod" (default) runs the app as-is;
+     * "dev" enables hot-reload via an in-pod git-watcher and the dev
+     * supervisord profile. Both Deployment and E2B backends honour Mode.
+     *
+     * @var string|null
+     */
+    public $mode = null;
+
+    /**
+     * Dev carries dev-mode-only knobs. Ignored when mode != "dev".
+     *
+     * @var AppDevSpec|null
+     */
+    public $dev = null;
 }
diff --git a/libs/k8s-client/tests/Model/V1/AppRunModelTest.php b/libs/k8s-client/tests/Model/V1/AppRunModelTest.php
index 6a1d7d031..5abf0a73e 100644
--- a/libs/k8s-client/tests/Model/V1/AppRunModelTest.php
+++ b/libs/k8s-client/tests/Model/V1/AppRunModelTest.php
@@ -42,6 +42,7 @@ private static function getAppRunTestData(): array
                 'startupLogs' => "foo\nbar\n",
                 'runtimeSize' => 'small',
                 'configVersion' => '1',
+                'mode' => 'dev',
             ],
             'status' => [
                 'syncedAt' => '2025-01-15T13:05:00Z',
@@ -77,6 +78,7 @@ public function testAppRunModelHydration(): void
         self::assertSame("foo\nbar\n", $appRun->spec->startupLogs);
         self::assertSame('small', $appRun->spec->runtimeSize);
         self::assertSame('1', $appRun->spec->configVersion);
+        self::assertSame('dev', $appRun->spec->mode);
 
         // PodRef
         self::assertNotNull($appRun->spec->podRef);
@@ -118,5 +120,6 @@ public function testAppRunModelSerialization(): void
         self::assertSame('Finished', $serialized['spec']['state']);
         self::assertSame('small', $serialized['spec']['runtimeSize']);
         self::assertSame('1', $serialized['spec']['configVersion']);
+        self::assertSame('dev', $serialized['spec']['mode']);
     }
 }
diff --git a/libs/k8s-client/tests/Model/V2/AppModelTest.php b/libs/k8s-client/tests/Model/V2/AppModelTest.php
index e28ca28c3..265233715 100644
--- a/libs/k8s-client/tests/Model/V2/AppModelTest.php
+++ b/libs/k8s-client/tests/Model/V2/AppModelTest.php
@@ -5,6 +5,7 @@
 namespace Keboola\K8sClient\Tests\Model\V2;
 
 use Keboola\K8sClient\Model\Io\Keboola\Apps\V2\App;
+use Keboola\K8sClient\Model\Io\Keboola\Apps\V2\AppDevSpec;
 use Keboola\K8sClient\Model\Io\Keboola\Apps\V2\AppFeatures;
 use Keboola\K8sClient\Model\Io\Keboola\Apps\V2\AppRuntime;
 use Keboola\K8sClient\Model\Io\Keboola\Apps\V2\AppSpec;
@@ -63,6 +64,11 @@ private static function getAppTestData(): array
                         'type' => 'e2bSandbox',
                     ],
                 ],
+                'mode' => 'dev',
+                'dev' => [
+                    'gitPollInterval' => '5s',
+                    'autoRunSetupOnDepChange' => false,
+                ],
                 'features' => [
                     'storageToken' => [
                         'description' => '[_internal][app] App 12345',
@@ -251,6 +257,13 @@ public function testStreamlitAppModelHydration(): void
         self::assertInstanceOf(Backend::class, $app->spec->runtime->backend);
         self::assertSame('e2bSandbox', $app->spec->runtime->backend->type);
 
+        // Mode + Dev
+        self::assertSame('dev', $app->spec->mode);
+        self::assertNotNull($app->spec->dev);
+        self::assertInstanceOf(AppDevSpec::class, $app->spec->dev);
+        self::assertSame('5s', $app->spec->dev->gitPollInterval);
+        self::assertFalse($app->spec->dev->autoRunSetupOnDepChange);
+
         // Features
         self::assertNotNull($app->spec->features);
         self::assertInstanceOf(AppFeatures::class, $app->spec->features);
@@ -475,6 +488,13 @@ public function testAppModelSerialization(): void
         self::assertSame('e2bSandbox', $serialized['spec']['runtime']['backend']['type']);
         self::assertSame('small', $serialized['spec']['runtimeSize']);
 
+        // Verify mode + dev survive round-trip
+        self::assertArrayHasKey('mode', $serialized['spec']);
+        self::assertSame('dev', $serialized['spec']['mode']);
+        self::assertArrayHasKey('dev', $serialized['spec']);
+        self::assertSame('5s', $serialized['spec']['dev']['gitPollInterval']);
+        self::assertFalse($serialized['spec']['dev']['autoRunSetupOnDepChange']);
+
         // Verify containerSpec is present and podSpec is not
         self::assertArrayHasKey('containerSpec', $serialized['spec']);
         self::assertArrayNotHasKey('podSpec', $serialized['spec']);