GRM-53: refactor: enforce script separation and document import rules

tests/unit/test_platforms.py

@@ -0,0 +1,25 @@
+"""Unit tests for scripts/ci/platforms.py."""
+
+from scripts.ci.platforms import PLATFORMS
+
+
+class TestPlatforms:
+    def test_platforms_not_empty(self) -> None:
+        assert len(PLATFORMS) >= 4
+
+    def test_each_platform_has_required_keys(self) -> None:
+        for p in PLATFORMS:
+            assert "name" in p
+            assert "image" in p
+            assert "command" in p
+
+    def test_platform_names_unique(self) -> None:
+        names = [p["name"] for p in PLATFORMS]
+        assert len(names) == len(set(names))
+
+    def test_known_platforms_present(self) -> None:
+        names = {p["name"] for p in PLATFORMS}
+        assert "ubuntu-2204" in names
+        assert "ubuntu-2404" in names
+        assert "debian-12" in names
+        assert "archlinux" in names