fix: restore pytest collection — fix 7 syntax/import errors (#823)

Fixed collection errors:
  scripts/adversary_schema.py: unterminated regex string (line 141)
  scripts/config_validate.py: unmatched ')' (line 87)
  scripts/pr_triage.py: truncated file + unterminated f-string
  adversary/harm_facilitation_adversary.py: 4 broken f-strings
  bin/glitch_patterns.py: missing get_threejs_patterns() export
  tests/test_glitch_detector.py: fixed THREEJS_CATEGORIES import
  tests/test_pr_triage.py: fixed function name imports
  training/training_pair_provenance.py: added ProvenanceTracker class
  scripts/validate_scene_data.py: symlink for import compatibility

Result: python3 -m pytest --collect-only
  911 tests collected, 0 collection errors
  (was: 769 collected / 7 errors)

scripts/config_validate.py

@@ -84,7 +84,7 @@ def validate_required_keys(data: Dict[str, Any]) -> List[ValidationError]:
         if key not in data:
             errors.append(ValidationError(key, f"Required key missing: {key}", "error"))
         elif not isinstance(data[key], spec["type"]):
-            errors.append ValidationError(key, f"Expected {spec['type'].__name__}, got {type(data[key]).__name__}", "error"))
+            errors.append(ValidationError(key, f"Expected {spec['type'].__name__}, got {type(data[key]).__name__}", "error"))
     return errors