worker: wrap non-dict tool returns as {"result": ...} to match MCP shapes

The MCP server sets structuredContent = result if isinstance(result, dict) else
{"result": result} (zeromcp mcp.py:832), and domain.py parses that exact shape —
e.g. function_of() reads payload["result"] from lookup_funcs, which returns a
bare list. Our worker returned the raw list, so function_of got a non-dict and
returned None: hence "F5 — cursor is not inside a defined function" on Tab.

Replicate the rule in the worker's dispatch: dict passes through, anything else
(list/scalar) is wrapped as {"result": ...}. Fixes function_of and every other
list-returning tool (resolve_names, xref_query, list_funcs) in one shot.

1 files changed, 5 insertions, 1 deletions

diff --git a/idatui/worker.py b/idatui/worker.py
index e1d3c44..8e82af8 100644
--- a/idatui/worker.py
+++ b/idatui/worker.py
@@ -112,7 +112,11 @@ def serve(sockpath: str, binpath: str) -> None:
         fn = tools.get(name)
         if fn is None:
             raise KeyError(f"unknown tool: {name!r}")
-        return fn(**args)
+        result = fn(**args)
+        # Match the MCP server's structuredContent: a dict passes through, any
+        # other return (list/scalar) is wrapped as {"result": ...}. domain.py
+        # parses that exact shape (e.g. lookup_funcs -> payload["result"]).
+        return result if isinstance(result, dict) else {"result": result}
 
     try:
         os.unlink(sockpath)