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-org.el

@@ -188,7 +188,8 @@
                             '((:name "started" :todo "STARTED")
                               (:name "priority = A" :priority "A")
                               (:name "priority = B" :priority "B")
-                              (:name "other priority" :priority< "B")
+                              (:name "priority = C" :priority "C")
+                              (:name "other priority" :priority< "C")
                               (:name "someday" :todo "SOMEDAY"))))))))))
 
 ;; capture