Mutation check done on all accepted tasks; mutant fixes; dump filter in proxy

- skip sy-subrc lines and CDS type lengths; CDS literal mutants; mutate helper classes
- proxy: sap_short_dumps shows only dumps of the current run
- 26/26 tasks pass; results in docs/faz1-tasarim.md 11g

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat

harness/proxy.py

@@ -41,6 +41,7 @@ class ToolProxy:
     def __init__(self, mcp, prefix, budget, log_path, tool_schema=None):
         self.mcp = mcp
         self.variant = VARIANTS.get(tool_schema) if tool_schema else None
+        self.started = time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime())  # dump times are UTC
         self.prefix = prefix.upper()
         self.max_calls = budget.get("max_tool_calls", 60)
         self.max_activations = budget.get("max_activations", 15)
@@ -82,6 +83,16 @@ class ToolProxy:
         return bool(RUN_PREFIX.match(n)) and not n.startswith(self.prefix)
 
     def _filter(self, tool, text):
+        if tool == "sap_short_dumps":  # only dumps of this run: other runs (and mutants) also write dumps
+            try:
+                data = json.loads(text)
+            except ValueError:
+                return text
+            if isinstance(data, dict) and isinstance(data.get("dumps"), list):
+                data["dumps"] = [d for d in data["dumps"] if str(d.get("updated", "")) >= self.started]
+                data["count"] = len(data["dumps"])
+                return json.dumps(data)
+            return text
         if tool not in ("sap_search_object", "sap_usage_references"):
             return text
         try: