Mutation in generator; category H (stop) scoring and judge; category K variants and tool schema variant; evalset plan

- mutation.py: negation mutants, skip WHILE/DO blocks (endless loop blocked RFC ~8 min)
- generator: accept only after mutation check; survivors go back as repair feedback
- runner/judge.py: stop tasks scored 100/30/0; gap by keywords, else judge model
- proxy: tool schema variant generic_v0 (draft); generator make_k_variant
- evalset.py: 88 slots for step F (A-I, H, K)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

harness/pilot.py

@@ -40,7 +40,7 @@ def main():
         try:
             log = generate(tid, "eval", otype, cat, 2, "deepseek-v4.1-flash:cloud",
                            os.environ.get("LLM_BASE_URL", "http://127.0.0.1:11434/v1"),
-                           run_base + 10 * k, topic)
+                           run_base + 40 * k, topic)
         except BudgetExceeded as e:
             print("BUDGET", e, flush=True)
             break