[BUG] Config and logger ignore XDG base directory environment variables

[NamedIdentity]

Description

The DCP config loader and logger hardcode homedir()/.config/opencode for resolving paths, ignoring the XDG_CONFIG_HOME and XDG_DATA_HOME environment variables. This causes DCP to fail to find its config file and fail to write debug logs for any user running with custom XDG base directories.

Affected Files

• lib/config.ts — GLOBAL_CONFIG_DIR uses join(homedir(), ".config", "opencode") instead of checking XDG_CONFIG_HOME
• lib/logger.ts — logDir uses join(homedir(), ".config", "opencode") instead of checking XDG_DATA_HOME

Expected Behavior

DCP should respect XDG base directory environment variables per the XDG Base Directory Specification:

• XDG_CONFIG_HOME → config files (default: ~/.config)
• XDG_DATA_HOME → data/log files (default: ~/.local/share)

OpenCode itself respects these variables. DCP should too, otherwise its config and logs end up in a different location than the rest of OpenCode when users set custom XDG paths.

Steps to Reproduce

1. Set XDG_CONFIG_HOME to a custom path (e.g., /tmp/test-config)
2. Place dcp.jsonc at $XDG_CONFIG_HOME/opencode/dcp.jsonc with "debug": true
3. Run OpenCode — DCP ignores the config and uses defaults
4. No debug logs appear at $XDG_DATA_HOME/opencode/logs/dcp/

Environment

• OS: Windows 10 (also affects Linux/macOS users with custom XDG paths)
• OpenCode: 1.1.48
• DCP: 1.2.7+

[Tarquinen]

Good find, thanks! i'll check out the PR

[Tarquinen]

actually going to leave this open until its merged to master in case anyone else has this issue