Handle per-skill values that come through as store-path strings, such as fetcher outputs with subdirectories appended. This restores the previously working pattern for packaged skill directories and adds a regression test for both directory and file sources.
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
- Configuration file is now placed in XDG_CONFIG_HOME/codex/config.toml by default for versions >=0.2.0 when preferXdgDirectories is enabled.
- Falls back to ~/.codex/config.yaml for versions <0.2.0 and to ~/.codex/config.toml when preferXdgDirectories is disabled
- Sets CODEX_HOME environment variable to $XDG_CONFIG_HOME/codex when using XDG directories.
- Updated tests to verify XDG directory behavior and environment variable presence.
