feat: Add multiple keyboard bindings and UI improvements

- Add `my-denote-open-metanote` function and keybinding
- Add `discomfort` and `xdg-launcher-run-app` bindings for Linux
- Add `mc/add-cursor-on-click` binding
- Add `guix` package
- Fix pixel-scroll-precision
- Add terminal UI theme improvements for xref and match faces
- Rename functions to `my-` prefix for consistency
- Reorganize org agenda priority grouping
- Switch EMMS default player to VLC

lisp/init-terminal-kbd.el

@@ -22,6 +22,10 @@
 (general-def diff-mode-map
   "M-o" 'other-window)
 
+;; dired
+(general-def dired-mode-map
+  "b" 'dired-up-directory)
+
 ;; global map with C-c prefix
 (general-def
   :prefix "C-c"