redesign config subsystem

Author: Agent-Hellboy

mcp_fuzzer/config/__init__.py

@@ -33,6 +33,7 @@
 
 # Import loader functions
 from .loader import (
+    ConfigLoader,
     find_config_file,
     load_config_file,
     apply_config_file,
@@ -67,10 +68,11 @@
     "DEFAULT_FORCE_KILL_TIMEOUT",
     # Manager
     "config",
-    # Loader functions
+    # Loader helpers
+    "ConfigLoader",
     "find_config_file",
     "load_config_file",
     "apply_config_file",
     "get_config_schema",
     "load_custom_transports",
-]
+]

mcp_fuzzer/config/discovery.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""Helpers for locating configuration files."""
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+
+def find_config_file(
+    config_path: str | None = None,
+    search_paths: list[str] | None = None,
+    file_names: list[str] | None = None,
+) -> str | None:
+    """Find a configuration file in the given paths.
+
+    Args:
+        config_path: Explicit path to config file, takes precedence if provided
+        search_paths: List of directories to search for config files
+        file_names: List of file names to search for
+
+    Returns:
+        Path to the found config file or None if not found
+    """
+    if config_path and os.path.isfile(config_path):
+        return config_path
+
+    if search_paths is None:
+        search_paths = [
+            os.getcwd(),
+            str(Path.home() / ".config" / "mcp-fuzzer"),
+        ]
+
+    if file_names is None:
+        file_names = ["mcp-fuzzer.yml", "mcp-fuzzer.yaml"]
+
+    for path in search_paths:
+        if not os.path.isdir(path):
+            continue
+        for name in file_names:
+            file_path = os.path.join(path, name)
+            if os.path.isfile(file_path):
+                return file_path
+
+    return None