refactor: update search tool parameters and documentation for clarity

- Changed the target parameter from "content" and "files" to "grep" and "find" to better represent their functionality.
- Revised descriptions in the tool definitions and execution code schema to enhance understanding of search modes and output formats.
- Ensured consistency in the handling of search operations across the codebase.

tools/code_execution_tool.py

@@ -90,8 +90,8 @@ _TOOL_STUBS = {
     ),
     "search_files": (
         "search_files",
-        'pattern: str, target: str = "content", path: str = ".", file_glob: str = None, limit: int = 50',
-        '"""Search file contents (target="content") or find files (target="files"). Returns dict with "matches"."""',
+        'pattern: str, target: str = "grep", path: str = ".", file_glob: str = None, limit: int = 50',
+        '"""Search file contents (target="grep") or find files by name (target="find"). Returns dict with "matches"."""',
         '{"pattern": pattern, "target": target, "path": path, "file_glob": file_glob, "limit": limit}',
     ),
     "patch": (
@@ -553,8 +553,8 @@ EXECUTE_CODE_SCHEMA = {
         "    Lines are 1-indexed. Returns {\"content\": \"...\", \"total_lines\": N}\n"
         "  write_file(path: str, content: str) -> dict\n"
         "    Always overwrites the entire file.\n"
-        "  search_files(pattern: str, target=\"content\", path=\".\", file_glob=None, limit=50) -> dict\n"
-        "    target: \"content\" (grep) or \"files\" (find). Returns {\"matches\": [...]}\n"
+        "  search_files(pattern: str, target=\"grep\", path=\".\", file_glob=None, limit=50) -> dict\n"
+        "    target: \"grep\" (search inside files) or \"find\" (find files by name). Returns {\"matches\": [...]}\n"
         "  patch(path: str, old_string: str, new_string: str, replace_all: bool = False) -> dict\n"
         "    Replaces old_string with new_string in the file.\n"
         "  terminal(command: str, timeout=None, workdir=None) -> dict\n"