fix: enforce VIP content boundary and PATCH updates

automation/anwarpy/runtime.py

@@ -126,7 +126,7 @@ class AgentApi:
         except HTTPError as error:
             return error.code, error.read(), error.headers.get("content-type", "")
         except (TimeoutError, URLError) as error:
-            if method in ("POST", "PUT"):
+            if method in ("POST", "PATCH"):
                 raise AmbiguousWrite(f"agent API {method} outcome is unknown") from error
             raise
 
@@ -176,7 +176,7 @@ class AgentApi:
         probe = self._probe(body)
         if probe:
             self.body_probes[slug] = probe
-        status, raw, _ = self._request("PUT", f"/api/agent/posts/{quote(slug)}", body)
+        status, raw, _ = self._request("PATCH", f"/api/agent/posts/{quote(slug)}", body)
         if status != 200:
             raise RuntimeError(f"agent API update failed ({status})")
         return self._decode(status, raw)