Return type standardization

tools/get_text_context.py

@@ -35,7 +35,7 @@ async def handle(args: Dict[str, Any]):
     # Case 1: No pattern and no lines provided -> Dump whole file
     if not pattern and not lines_str:
         output = [f"{i+1}: {line}" for i, line in enumerate(all_lines)]
-        return {"text": "".join(output)}
+        return [{"type": "text", "text": "".join(output)}]
 
     # Determine target line numbers (1-based)
     target_lines: Set[int] = set()
@@ -61,7 +61,7 @@ async def handle(args: Dict[str, Any]):
             raise ToolError(f"Error parsing line indices: {e}")
 
     if not target_lines:
-        return {"text": "No matching lines found."}
+        return [{"type": "text", "text": "No matching lines found."}]
 
     # Expand targets with context
     lines_to_show: Set[int] = set()
@@ -83,4 +83,4 @@ async def handle(args: Dict[str, Any]):
         output.append(f"{ln}: {all_lines[ln-1]}")
         last_line = ln
 
-    return {"text": "".join(output)}
+    return [{"type": "text", "text": "".join(output)}]