waybar: show the bar on this machine's primary output

The deployed config pinned "output": "eDP-1", the laptop's internal
display. On the PC waybar started fine but never mapped a layer surface,
so there was no bar and SIGUSR1 had nothing to toggle. Listed both
profiles' primaries instead -- waybar skips names that are not connected,
so the one file works on the laptop and the PC.

Two bugs in the same config that this uncovered:

- bars/main.jsonc included modules/temperature.cpu.jsonc, but the file is
  temperature-cpu.jsonc, so the temperature#cpu module the bar referenced
  was silently absent.
- get_wg_status.sh ran `sudo wg show` with no tty, logging "a terminal is
  required to read the password" on every poll. Now `sudo -n`, which fails
  instantly and falls into the existing "disconnected" branch, and starts
  working as-is if a NOPASSWD rule is ever added.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01StGBghPW9Dm7z7uj2VNWHr

waybar/config.jsonc

@@ -3,7 +3,10 @@
     "include": "~/.config/waybar/bars/main.jsonc",
     "height": 50,
     "layer": "top",
-    "output": "eDP-1",
+    // Primary output of each machine profile (see hypr/configs/profiles):
+    // eDP-1 on the laptop, DP-1 on the PC. Waybar skips names that are
+    // not connected, so one list works on both.
+    "output": ["eDP-1", "DP-1"],
     "mode": "dock",
     "exclusive": true,
     "passtrough": false,