fix(artifacts): Use PROCESSING_ERROR for unsupported artifact types (EME-422)

Unsupported artifact types are genuine errors, not intentional skips.
Report them with PROCESSING_ERROR instead of SKIPPED so they surface
correctly to users.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: runningcode

src/launchpad/artifact_processor.py

@@ -340,7 +340,15 @@ def _do_distribution(
                 self._sentry_client.upload_installable_app(organization_id, project_id, artifact_id, f)
         else:
             logger.error(f"BUILD_DISTRIBUTION failed for {artifact_id}: unsupported artifact type")
-            self._update_distribution_skip(organization_id, project_id, artifact_id, "unsupported")
+            try:
+                self._sentry_client.update_distribution_error(
+                    org=organization_id,
+                    artifact_id=artifact_id,
+                    error_code=InstallableAppErrorCode.PROCESSING_ERROR.value,
+                    error_message="unsupported artifact type",
+                )
+            except SentryClientError:
+                logger.exception(f"Failed to update distribution error for artifact {artifact_id}")
 
     def _do_size(
         self,

tests/unit/artifacts/test_artifact_processor.py

@@ -140,7 +140,7 @@ def test_processing_error_message_enum_values(self):
         assert ProcessingErrorMessage.SIZE_ANALYSIS_FAILED.value == "Failed to perform size analysis"
         assert ProcessingErrorMessage.UNKNOWN_ERROR.value == "An unknown error occurred"
 
-    def test_do_distribution_unknown_artifact_type_skips(self):
+    def test_do_distribution_unknown_artifact_type_reports_error(self):
         mock_sentry_client = Mock(spec=SentryClient)
         mock_sentry_client.update_distribution_error.return_value = None
         self.processor._sentry_client = mock_sentry_client
@@ -155,8 +155,8 @@ def test_do_distribution_unknown_artifact_type_skips(self):
         mock_sentry_client.update_distribution_error.assert_called_once_with(
             org="test-org-id",
             artifact_id="test-artifact-id",
-            error_code=InstallableAppErrorCode.SKIPPED.value,
-            error_message="unsupported",
+            error_code=InstallableAppErrorCode.PROCESSING_ERROR.value,
+            error_message="unsupported artifact type",
         )
 
     def test_do_distribution_invalid_code_signature_skips(self):