feat: casan chat optz

packages/casan-harness/scripts/bash/chat-operator.py

@@ -16,6 +16,8 @@ import tempfile
 import uuid
 from datetime import datetime, timezone
 
+PYTHON_BIN = sys.executable or "/usr/bin/python3"
+
 GENESIS_HASH = "0" * 64
 
 
@@ -137,7 +139,7 @@ def lower(s: str) -> str:
 
 
 def classify(message: str):
-    r = subprocess.run(["python3", ROUTER, "classify", "--message", message], cwd=ROOT, capture_output=True, text=True)
+    r = subprocess.run([PYTHON_BIN, ROUTER, "classify", "--message", message], cwd=ROOT, capture_output=True, text=True)
     if r.returncode != 0:
         return {"mode": "BLOCK", "risk": "high", "reason": "router_failed", "matched_rules": [r.stderr.strip()]}
     try: