ADT fallback: Accept headers for FUNC; G0189 accepted; regen2 results

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

harness/adt_client.py

@@ -83,10 +83,11 @@ class AdtClient:
                                             "dataname=com.sap.adt.lock.result"))
         lh = re.search(r"<LOCK_HANDLE>(.*?)</LOCK_HANDLE>", t).group(1)
         try:
+            # FUNC needs an Accept header (PROG does not): "Accept header missing" (G0189)
             self._req("PUT", f"{uri}/source/main?lockHandle={lh}", source,
-                      dict(st, **{"Content-Type": "text/plain; charset=utf-8"}))
+                      dict(st, **{"Content-Type": "text/plain; charset=utf-8", "Accept": "text/plain"}))
         finally:
-            self._req("POST", f"{uri}?_action=UNLOCK&lockHandle={lh}", None, st)
+            self._req("POST", f"{uri}?_action=UNLOCK&lockHandle={lh}", None, dict(st, Accept="*/*"))
         body = ('<?xml version="1.0" encoding="UTF-8"?><adtcore:objectReferences '
                 'xmlns:adtcore="http://www.sap.com/adt/core">'
                 f'<adtcore:objectReference adtcore:uri={quoteattr(uri)} adtcore:name={quoteattr(name)}/>'

harness/proxy.py

@@ -153,7 +153,8 @@ class ToolProxy:
                 self.adt = AdtClient()
             done, msgs = self.adt.write_activate(uri, name.upper(), args.get("source", ""))
         except Exception as e:  # noqa: BLE001  keep the EPOD result when the fallback fails
-            self.fallbacks.append({"object": name, "error": str(e)[:200]})
+            body = e.read().decode(errors="replace")[:600] if hasattr(e, "read") else ""
+            self.fallbacks.append({"object": name, "error": str(e)[:200], "body": body})
             return err, text
         self.fallbacks.append({"object": name, "activated": done})
         out = {"success": done,