fix: Align validator type naming from forbidden_output to forbidden_patterns (Feature AutoForgeAI#141)

Replace all remaining 'forbidden_output' references with 'forbidden_patterns' to
match the validator registry in validators.py and the VALIDATOR_TYPES constant.

- api/dspy_signatures.py: Updated DSPy signature field descriptions
- api/static_spec_adapter.py: Updated create_validator() call
- tests/verify_feature_8.py: Updated test validator type list

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: rudiheydra

api/dspy_signatures.py

@@ -90,7 +90,7 @@ class SpecGenerationSignature(dspy.Signature):
         validators_json: JSON string containing acceptance validators.
             Array of validator objects, each with:
             {
-                "type": "test_pass|file_exists|lint_clean|forbidden_output|custom",
+                "type": "test_pass|file_exists|lint_clean|forbidden_patterns|custom",
                 "config": {...},
                 "weight": 1.0,
                 "required": false
@@ -205,7 +205,7 @@ class SpecGenerationSignature(dspy.Signature):
     validators_json: str = dspy.OutputField(
         desc=(
             "JSON array of acceptance validators. Each validator: "
-            "{\"type\": \"test_pass|file_exists|lint_clean|forbidden_output|custom\", "
+            "{\"type\": \"test_pass|file_exists|lint_clean|forbidden_patterns|custom\", "
             "\"config\": {...}, \"weight\": 1.0, \"required\": false}. "
             "Include at least one validator. test_pass is common for coding tasks."
         )

api/static_spec_adapter.py

@@ -589,7 +589,7 @@ def _create_coding_acceptance_spec(
             ),
             # No console errors during verification
             create_validator(
-                validator_type="forbidden_output",
+                validator_type="forbidden_patterns",
                 config={
                     "patterns": [
                         r"ERROR",

tests/verify_feature_8.py

@@ -92,7 +92,7 @@ def verify_step_1_validator_config():
         print("  [PASS] Rejects invalid validator type")
 
     # Test all valid validator types
-    for vtype in ["test_pass", "file_exists", "lint_clean", "forbidden_output", "custom"]:
+    for vtype in ["test_pass", "file_exists", "lint_clean", "forbidden_patterns", "custom"]:
         v = Validator(type=vtype, config={})
         assert v.type == vtype
     print(f"  [PASS] All validator types work: {list(VALIDATOR_TYPES.__args__)}")