fix(tester): route mobile checks by platform binding

skills/tester/tests/test_mobile_bundle.py

@@ -50,6 +50,72 @@ class MobileBundleTests(unittest.TestCase):
         with self.assertRaises(bundle.ArtifactFailure):
             bundle.parse_artifacts(["android=/tmp/a.apk", "android=/tmp/b.apk"])
 
+    def test_parse_bindings_keeps_platforms_separate(self):
+        self.assertEqual(
+            bundle.parse_bindings(["android=tester.android", "ios=tester.ios"], ["android", "ios"]),
+            {"android": "tester.android", "ios": "tester.ios"},
+        )
+        self.assertEqual(
+            bundle.parse_bindings([], ["android"]),
+            {"android": "tester.android"},
+        )
+        with self.assertRaises(bundle.ArtifactFailure):
+            bundle.parse_bindings(["android=tester.test", "ios=tester.test"], ["android", "ios"])
+
+    def test_preflight_matrix_rejects_remote_platform_using_local_runner(self):
+        with tempfile.TemporaryDirectory() as temp:
+            root = Path(temp)
+            agent_dir = root / ".pouch"
+            agent_dir.mkdir()
+            (agent_dir / "agent.yaml").write_text(
+                """
+schemaVersion: 1
+locations:
+  local-app:
+    environment: local
+    host: local
+    project: test
+    path: /tmp/test
+  remote-ios:
+    environment: macmini
+    host: runtime:12345678-1234-1234-1234-123456789012
+    project: test
+    path: /tmp/test-ios
+profiles:
+  test-agent:
+    role: test
+    cli: codex
+    tier: standard
+    model: gpt-5
+    reasoningEffort: medium
+    permissionMode: workspace-write
+bindings:
+  tester.android: {adapter: tester, location: local-app, profile: test-agent}
+  tester.ios: {adapter: tester, location: remote-ios, profile: test-agent}
+""".strip()
+                + "\n",
+                encoding="utf-8",
+            )
+            config = root / "matrix.yaml"
+            config.write_text(
+                """
+matrix:
+  - platform: android
+    tester: {binding: tester.android, node: local, runner: {kind: local}}
+  - platform: ios
+    tester: {binding: tester.ios, node: local, runner: {kind: local}}
+""".strip()
+                + "\n",
+                encoding="utf-8",
+            )
+            with self.assertRaisesRegex(bundle.EnvironmentFailure, "ios.*contract runner"):
+                bundle.validate_preflight_matrix(
+                    root,
+                    config,
+                    {"android": "tester.android", "ios": "tester.ios"},
+                    ["android", "ios"],
+                )
+
     def test_new_worktree_each_run(self):
         with tempfile.TemporaryDirectory() as temp:
             repo, worktrees = Path(temp) / "repo", Path(temp) / "worktrees"