feat(config): Improve dired, keybindings, terminal UI and add packages

- Add dired buffer killing and custom dirvish layout toggle
- Replace ido with fido-mode in terminal config
- Add custom terminal color theme with 24-bit color support
- Add new packages: tokei, helpful, gptel-magit
- Refactor project keybindings under C-x p prefix
- Add mwim navigation bindings globally
- Improve ibuffer filter groups and consult buffer filters
- Add diff-mode keybindings and refine magit diff display

lisp/init-gptel.el

@@ -119,6 +119,10 @@ from the last 1500 characters of the buffer."
   (gptel-agent-update))
 
 (use-package gptel-magit
+  :straight
+  (gptel-magit :type git
+	       :host github
+	       :repo "ArthurHeymans/gptel-magit")
   :hook
   (magit-mode . gptel-magit-install)