The OpenCode installer was writing to ~/.opencode but OpenCode expects
global configuration at ~/.config/opencode per XDG Base Directory spec.
Fixes:
- src/commands/install.ts: Change default output from ~/.opencode to
~/.config/opencode
- src/targets/opencode.ts: Recognize "opencode" basename (not just
".opencode") for direct writes without nesting
Closes#114🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude <noreply@anthropic.com>