chore(tests): skip special-app tests on staging; guard import

- Remove SPECIAL_APPLICATION_ID/VERSION from staging constants entirely
- Guard the import in e2e_test.py with try/except so staging doesn't NameError
- Add skipif(SPECIAL_APPLICATION_ID is None) to both special-app tests
  so they are silently skipped on staging but still run on production (0.99.0)

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

Author: ari-nz

tests/aignostics/platform/e2e_test.py

@@ -36,8 +36,6 @@
     PIPELINE_GPU_TYPE,
     PIPELINE_MAX_GPUS_PER_SLIDE,
     PIPELINE_NODE_ACQUISITION_TIMEOUT_MINUTES,
-    SPECIAL_APPLICATION_ID,
-    SPECIAL_APPLICATION_VERSION,
     SPOT_0_CRC32C,
     SPOT_0_GS_URL,
     SPOT_0_HEIGHT,
@@ -62,6 +60,12 @@
     TEST_APPLICATION_VERSION,
 )
 
+try:
+    from tests.constants_test import SPECIAL_APPLICATION_ID, SPECIAL_APPLICATION_VERSION
+except ImportError:
+    SPECIAL_APPLICATION_ID = None  # type: ignore[assignment]
+    SPECIAL_APPLICATION_VERSION = None  # type: ignore[assignment]
+
 TEST_APPLICATION_SUBMIT_AND_WAIT_DEADLINE_SECONDS = 60 * 45  # 45 minutes
 TEST_APPLICATION_SUBMIT_AND_WAIT_DUE_DATE_SECONDS = 60 * 10  # 10 minutes
 TEST_APPLICATION_SUBMIT_AND_WAIT_TIMEOUT_SECONDS = (
@@ -610,6 +614,7 @@ def test_platform_heta_app_submit() -> None:
 @pytest.mark.e2e
 @pytest.mark.stress_only
 @pytest.mark.long_running
+@pytest.mark.skipif(SPECIAL_APPLICATION_ID is None, reason="Special application not configured for this environment")
 @pytest.mark.timeout(timeout=SPECIAL_APPLICATION_SUBMIT_AND_FIND_SUBMIT_TIMEOUT_SECONDS)
 def test_platform_special_app_submit() -> None:
     """Test application runs with the special application.
@@ -678,6 +683,7 @@ def test_platform_special_app_submit() -> None:
 @pytest.mark.stress_only
 @pytest.mark.long_running
 @pytest.mark.scheduled_only
+@pytest.mark.skipif(SPECIAL_APPLICATION_ID is None, reason="Special application not configured for this environment")
 @pytest.mark.timeout(timeout=SPECIAL_APPLICATION_FIND_AND_VALIDATE_TIMEOUT_SECONDS)
 def test_platform_special_app_find_and_validate() -> None:
     """Test application runs with the special application.

tests/constants_test.py

@@ -108,9 +108,6 @@
         PIPELINE_CPU_PROVISIONING_MODE = "SPOT"
         PIPELINE_NODE_ACQUISITION_TIMEOUT_MINUTES = 30
 
-        SPECIAL_APPLICATION_ID = "test-app"
-        SPECIAL_APPLICATION_VERSION = "1.0.0"
-
         SPOT_0_EXPECTED_RESULT_FILES = [
             ("tissue_qc_segmentation_map_image.tiff", 1642856, 10),
             ("tissue_qc_geojson_polygons.json", 259955, 10),