hypr,waybar: rework workspace numbering to support named workspaces ordering

Renumber regular workspaces to IDs 21-30 with defaultName 1-10, giving
named workspaces IDs 1-6 so they sort before numbered ones in waybar.
Add persistent named workspaces (comms, element, mail, joplin, steam,
spotify) with monitor/layout assignments. Update keybinds to use name:
dispatch. Add spotify as dedicated monocle workspace on DP-2.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dot_config/waybar/config.tmpl

@@ -81,6 +81,7 @@
       "mail": "",
       "joplin": "",
       "steam": "",
+      "spotify": "",
       "default": "",
       "special": ""
     },