Update tests for tag removal

- Remove Tag/TagHistory model tests from unit tests
- Update CacheSettings tests to remove allow_public_internet field
- Replace tag= with version= in upload_test_file calls
- Update test assertions to use versions instead of tags
- Remove tests for tag: prefix downloads (now uses version:)
- Update dependency tests for version-only schema

backend/tests/test_upstream_caching.py

@@ -192,7 +192,6 @@ class TestCacheSettingsModel:
 
         settings = CacheSettings()
         assert hasattr(settings, 'id')
-        assert hasattr(settings, 'allow_public_internet')
         assert hasattr(settings, 'auto_create_system_projects')
 
     def test_model_with_values(self):
@@ -201,11 +200,9 @@ class TestCacheSettingsModel:
 
         settings = CacheSettings(
             id=1,
-            allow_public_internet=False,
             auto_create_system_projects=True,
         )
         assert settings.id == 1
-        assert settings.allow_public_internet is False
         assert settings.auto_create_system_projects is True
 
 
@@ -365,16 +362,14 @@ class TestCacheSettingsSchemas:
         from app.schemas import CacheSettingsUpdate
 
         update = CacheSettingsUpdate()
-        assert update.allow_public_internet is None
         assert update.auto_create_system_projects is None
 
     def test_update_schema_partial(self):
         """Test CacheSettingsUpdate with partial fields."""
         from app.schemas import CacheSettingsUpdate
 
-        update = CacheSettingsUpdate(allow_public_internet=False)
-        assert update.allow_public_internet is False
-        assert update.auto_create_system_projects is None
+        update = CacheSettingsUpdate(auto_create_system_projects=True)
+        assert update.auto_create_system_projects is True
 
 
 class TestCacheRequestSchemas:
@@ -388,7 +383,7 @@ class TestCacheRequestSchemas:
             url="https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
             source_type="npm",
             package_name="lodash",
-            tag="4.17.21",
+            version="4.17.21",
         )
         assert request.url == "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz"
         assert request.source_type == "npm"