feat(gui): Implement on-demand definition lookup with clickable navigation and collapsing

src/app_controller.py

@@ -46,11 +46,12 @@ def parse_symbols(text: str) -> list[str]:
  """
  return re.findall(r"@([a-zA-Z_][a-zA-Z0-9_]*(?:\.[a-zA-Z_][a-zA-Z0-9_]*)*)", text)
 
-def get_symbol_definition(symbol: str, files: list[str]) -> tuple[str, str] | None:
+def get_symbol_definition(symbol: str, files: list[str]) -> tuple[str, str, int] | None:
  for file_path in files:
-  result = mcp_client.py_get_definition(file_path, symbol)
-  if 'not found' not in result.lower():
-   return (file_path, result)
+  result = mcp_client.py_get_symbol_info(file_path, symbol)
+  if isinstance(result, tuple):
+   source, line = result
+   return (file_path, source, line)
  return None
 
 class GenerateRequest(BaseModel):
@@ -1827,6 +1828,15 @@ class AppController:
     self.last_file_items = file_items
     self._set_status("sending...")
     user_msg = self.ui_ai_input
+    
+    symbols = parse_symbols(user_msg)
+    file_paths = [f['path'] for f in file_items]
+    for symbol in symbols:
+     res = get_symbol_definition(symbol, file_paths)
+     if res:
+      file_path, definition, line = res
+      user_msg += f'\n\n[Definition: {symbol} from {file_path} (line {line})]\n```python\n{definition}\n```'
+
     base_dir = self.ui_files_base_dir
     sys.stderr.write(f"[DEBUG] _do_generate success. Prompt: {user_msg[:50]}...\n")
     sys.stderr.flush()