refactor: centralize path handling with XDG Base Directory compliance

- Add src/paths.rs module for all XDG path lookups
- Move scripts from ~/.config to ~/.local/share (XDG data)
- Use $XDG_CONFIG_HOME for browser bookmark paths
- Add dev-logging feature flag for verbose debug output
- Add dev-install profile for testable release builds
- Remove CLAUDE.md from version control

BREAKING: Scripts directory moved from
~/.config/owlry/scripts/ to ~/.local/share/owlry/scripts/

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -1 +1,2 @@
 /target
+CLAUDE.md