feat(monitors): main external display, Samsung ultrawide support

monitors.lua picks the main external (Studio Display, else the Samsung
S34CG50 ultrawide, matched on EDID) and reloads the config when it changes.
Workspaces 1-4, the Wacom mapping, and its active-area aspect follow it.
eDP-1 uses auto-right so it sits beside whichever external is connected.

Also unbinds SUPER+RETURN / SUPER+SHIFT+RETURN (terminal and browser live
on SUPER+CTRL+ALT+J/K) and pins the Fastmail/Beeper scratch workspaces'
comments to eDP-1.

bindings.lua

@@ -7,8 +7,9 @@
 
 -- ─── Window management ──────────────────────────────────────────────────────
 
--- Spawn Terminal 
--- hl.unbind("SUPER + RETURN") -- was: toggle window transparency
+-- Terminal and browser live on SUPER + CTRL + ALT + J / K (Applications, below).
+hl.unbind("SUPER + RETURN") -- was: launch terminal
+hl.unbind("SUPER + SHIFT + RETURN") -- was: launch browser
 
 -- Mod+Q -> close. Omarchy already binds this, so it is only made explicit.
 hl.unbind("SUPER + Q")
@@ -141,7 +142,7 @@ o.bind("SUPER + A", "Toggle scratch workspace", "omarchy-toggle-scratch scratchp
 o.bind("SUPER + CTRL + ALT + H", "Toggle Tern scratch workspace", "omarchy-toggle-scratch scratchpad")
 o.bind("SUPER + CTRL + ALT + L", "Toggle Claude scratch workspace", "omarchy-toggle-scratch claude")
 
--- Workspaces 1 to 4 (Studio Display) on Q W E R and 5 to 8 (laptop panel) on
+-- Workspaces 1 to 4 (main external display) on Q W E R and 5 to 8 (laptop panel) on
 -- Y U I O: ALT to focus, ALT + SHIFT to send the window there. The pinning
 -- lives in hypr/hyprland.lua, so focusing a workspace also moves to its
 -- monitor. No Omarchy default uses ALT with a letter, so nothing is unbound.
@@ -242,9 +243,10 @@ o.bind("SUPER + CTRL + ALT + G", "Ghostty", "omarchy-cycle ghostty")
 o.bind("SUPER + CTRL + ALT + O", "Obsidian", "omarchy-cycle obsidian")
 o.bind("SUPER + CTRL + ALT + F", "File manager", "omarchy-launch-or-focus nautilus \"gtk-launch org.gnome.Nautilus\"")
 -- Fastmail, Beeper, Google Home and LM Studio each live on their own scratch
--- workspace (window rules in hypr/hyprland.lua); the toggle reveals it on the
--- focused monitor and starts the app only when no window of it exists -- the
--- web-app launcher would otherwise open a second window every time.
+-- workspace (window rules in hypr/hyprland.lua); the toggle reveals it (on
+-- eDP-1 for Fastmail and Beeper, else the focused monitor) and starts the app
+-- only when no window of it exists -- the web-app launcher would otherwise
+-- open a second window every time.
 o.bind("SUPER + CTRL + ALT + E", "Fastmail", "omarchy-toggle-scratch fastmail")
 o.bind("SUPER + CTRL + ALT + M", "Beeper", "omarchy-toggle-scratch beeper")
 o.bind("SUPER + CTRL + H", "Google Home", "omarchy-toggle-scratch home")
@@ -306,8 +308,8 @@ hl.unbind("SUPER + SPACE") -- was: pseudo window
 -- o.bind("ALT + SPACE", "Toggle Launcher", "omarchy-menu toggle launcher")
 
 -- Mod+Shift+Return was the vicinae window switcher. ScrollOverview on
--- ALT + TAB below takes that job, so SUPER + SHIFT + RETURN keeps its default
--- job of opening the browser.
+-- ALT + TAB below takes that job; SUPER + SHIFT + RETURN is unbound
+-- (Window management, above).
 --
 -- flea --default: begin. Written by `flea --default`; `flea --default off` removes the block whole.
 hl.unbind("SUPER + SHIFT + F")