feat: add get_default_config_path function

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/zzpyjenkins/config.py

@@ -1,5 +1,6 @@
 """Configuration file handling."""
 
+import os
 from pathlib import Path
 import tomllib
 
@@ -10,6 +11,21 @@ class ConfigError(Exception):
     pass
 
 
+def get_default_config_path() -> Path:
+    """Get the default config file path.
+
+    Returns:
+        Path to ~/.config/zzpyjenkins/config.toml
+    """
+    xdg_config = os.environ.get("XDG_CONFIG_HOME")
+    if xdg_config:
+        config_dir = Path(xdg_config)
+    else:
+        config_dir = Path.home() / ".config"
+
+    return config_dir / "zzpyjenkins" / "config.toml"
+
+
 def load_config(config_path: Path) -> dict:
     """Load and parse TOML config file."""
     if not config_path.exists():

tests/test_config.py

@@ -5,7 +5,12 @@ import tempfile
 import pytest
 from pathlib import Path
 
-from zzpyjenkins.config import load_config, ConfigError, get_server_config
+from zzpyjenkins.config import (
+    load_config,
+    ConfigError,
+    get_server_config,
+    get_default_config_path,
+)
 
 
 def test_load_config_file_not_found():
@@ -68,3 +73,11 @@ def test_get_server_config_missing_field():
     with pytest.raises(ConfigError) as exc_info:
         get_server_config(config, "incomplete")
     assert "password" in str(exc_info.value)
+
+
+def test_get_default_config_path():
+    """Test default config path is correct."""
+    path = get_default_config_path()
+    assert path.name == "config.toml"
+    assert ".config" in str(path)
+    assert "zzpyjenkins" in str(path)