feat(context): Implement directory grouping and file stats in context composition panel

src/aggregate.py

@@ -15,6 +15,7 @@ to use the MCP tools to fetch only what it needs.
 import tomllib
 import re
 import glob
+import os
 from pathlib import Path, PureWindowsPath
 from typing import Any, cast
 from src import summarize
@@ -59,6 +60,39 @@ def resolve_paths(base_dir: Path, entry: str) -> list[Path]:
   filtered.append(p)
  return sorted(filtered)
 
+def group_files_by_dir(files: list[Any]) -> dict[str, list[Any]]:
+ """Groups FileItem objects by their relative directory path."""
+ grouped = {}
+ for f in files:
+  path_str = f.path if hasattr(f, 'path') else str(f)
+  # Normalize path separators
+  path_str = path_str.replace('\\', '/')
+  dir_name = os.path.dirname(path_str)
+  if not dir_name:
+   dir_name = "."
+  if dir_name not in grouped:
+   grouped[dir_name] = []
+  grouped[dir_name].append(f)
+ return grouped
+
+def compute_file_stats(abs_path: str) -> dict[str, int]:
+ """Computes lines and basic AST stats for a file."""
+ stats = {"lines": 0, "ast_elements": 0}
+ try:
+  with open(abs_path, 'r', encoding='utf-8') as f:
+   content = f.read()
+   stats["lines"] = len(content.splitlines())
+   if abs_path.endswith('.py'):
+    import ast
+    try:
+     tree = ast.parse(content)
+     stats["ast_elements"] = sum(1 for node in ast.walk(tree) if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)))
+    except Exception:
+     pass
+ except Exception:
+  pass
+ return stats
+
 def build_discussion_section(history: list[Any]) -> str:
  """