DEVX-173: fix(ci): resolve dep-PR container digest via registry v2 API

tests/unit/test_create_dependency_pr.py

@@ -200,23 +200,39 @@ class TestCreateVikunjaTask:
             assert mock_client.create_task.call_args.args[0] == 3
 
 
-class TestResolveContainerDigest:
-    """REQ-1: pre-PR artifact verification via the packages API."""
+def _v2_mocks(digest: str = "sha256:deadbeef") -> list[MagicMock]:
+    """Token + manifest responses for the registry v2 digest lookup."""
+    tok = MagicMock()
+    tok.raise_for_status = MagicMock()
+    tok.json.return_value = {"token": "bearer-tok"}
+    man = MagicMock()
+    man.raise_for_status = MagicMock()
+    man.headers = {"Docker-Content-Digest": digest}
+    return [tok, man]
 
-    def test_returns_digest_from_manifest_blob(self) -> None:
+
+class TestResolveContainerDigest:
+    """REQ-1: existence check via packages API; digest via registry v2."""
+
+    def test_returns_digest_from_registry_v2(self) -> None:
         from devx.ci.create_dependency_pr import resolve_container_digest
 
-        mock_resp = MagicMock()
-        mock_resp.raise_for_status = MagicMock()
-        mock_resp.json.return_value = [
-            {"name": "sha256_layer", "sha256": "abc"},
-            {"name": "manifest.json", "sha256": "deadbeef"},
-        ]
-        with patch("devx.ci.create_dependency_pr.requests.get", return_value=mock_resp):
+        files = MagicMock()
+        files.raise_for_status = MagicMock()
+        files.json.return_value = [{"name": "manifest.json", "sha256": "blob-not-pullable"}]
+        with patch(
+            "devx.ci.create_dependency_pr.requests.get",
+            side_effect=[files, *_v2_mocks()],
+        ) as mock_get:
             digest = resolve_container_digest(
                 "https://git.example.com/api/v1", "oblachno", "sso-bridge", "0.9.1", "tok"
             )
         assert digest == "sha256:deadbeef"
+        man_call = mock_get.call_args_list[2]
+        assert "manifests/0.9.1" in man_call.args[0]
+        assert "oci.image.index" in man_call.kwargs["headers"]["Accept"]
+        tok_call = mock_get.call_args_list[1]
+        assert tok_call.kwargs["params"]["scope"] == "repository:oblachno/sso-bridge:pull"
 
     def test_raises_when_version_missing(self) -> None:
         import requests
@@ -231,14 +247,38 @@ class TestResolveContainerDigest:
             with pytest.raises(click.ClickException, match="unpublished artifact"):
                 resolve_container_digest("https://git.example.com/api/v1", "oblachno", "sso-bridge", "9.9.9", "tok")
 
-    def test_raises_when_no_manifest_blob(self) -> None:
+    def test_raises_when_v2_digest_missing(self) -> None:
         from devx.ci.create_dependency_pr import resolve_container_digest
 
-        mock_resp = MagicMock()
-        mock_resp.raise_for_status = MagicMock()
-        mock_resp.json.return_value = [{"name": "sha256_layer", "sha256": "abc"}]
-        with patch("devx.ci.create_dependency_pr.requests.get", return_value=mock_resp):
-            with pytest.raises(click.ClickException, match="no manifest blob"):
+        files = MagicMock()
+        files.raise_for_status = MagicMock()
+        files.json.return_value = []
+        tok, man = _v2_mocks(digest="")
+        with patch(
+            "devx.ci.create_dependency_pr.requests.get",
+            side_effect=[files, tok, man],
+        ):
+            with pytest.raises(click.ClickException, match="no Docker-Content-Digest"):
+                resolve_container_digest("https://git.example.com/api/v1", "oblachno", "sso-bridge", "0.9.1", "tok")
+
+    def test_raises_when_v2_manifest_request_fails(self) -> None:
+        import requests
+
+        from devx.ci.create_dependency_pr import resolve_container_digest
+
+        files = MagicMock()
+        files.raise_for_status = MagicMock()
+        files.json.return_value = []
+        tok, _ = _v2_mocks()
+        err = requests.HTTPError("500")
+        err.response = MagicMock(status_code=500)
+        man = MagicMock()
+        man.raise_for_status.side_effect = err
+        with patch(
+            "devx.ci.create_dependency_pr.requests.get",
+            side_effect=[files, tok, man],
+        ):
+            with pytest.raises(click.ClickException, match="v2 digest lookup failed"):
                 resolve_container_digest("https://git.example.com/api/v1", "oblachno", "sso-bridge", "0.9.1", "tok")
 
     def test_raises_on_connection_error(self) -> None:
@@ -635,7 +675,7 @@ class TestBranchCreation:
         ok.raise_for_status = MagicMock()
         ok.json.return_value = [{"name": "manifest.json", "sha256": "cafe"}]
         with (
-            patch("devx.ci.create_dependency_pr.requests.get", side_effect=[fail, ok]),
+            patch("devx.ci.create_dependency_pr.requests.get", side_effect=[fail, ok, *_v2_mocks("sha256:cafe")]),
             patch("devx.ci.create_dependency_pr.time.sleep"),
         ):
             digest = resolve_container_digest(