fix(idle): skip DPMS-off when docked (#127 mitigation)

Blanking the only live output in dock mode led to a brick where wake and
even VT switch failed. Skip hypridle's 10m dpms off when any laptop
internal (eDP/LVDS/DSI) is present but not enabled; lock at 5m remains.
Undocked still blanks. Document LATER revisit for intentional
DPMS-when-docked once wake is proven.

V1: nix flake check --no-build. V3: docked idle stays lit under lock.

agent/HARDWARE-QUEUE.md

@@ -49,35 +49,20 @@ Everything else below stays open; order is convenience, not a gate.
       restores **only** the radios that were on before. If Wi-Fi was already
       off, it must stay off after disengage. Glyph must **not** appear when
       airplane is off.
-- [ ] **#127 docked idle blackout (AMD dev box, 2026-07-15)** —
-      **Incident (FAILED, unsolicited):** laptop docked, idle a few minutes,
-      screens went black ("sleep"). External keyboard/mouse did not restore
-      any display; unplugging the external did not re-enable the laptop
-      panel; Caps Lock LED still toggled (machine alive). Forced recovery
-      was needed; a long Grok session died with the brick.
-      **Important distinction:** on AC, hypridle is *not* supposed to
-      suspend — only lock (5m) + `dpms off` (10m). Confirm next time with
-      dump file or journal for `Suspending|PM: suspend` vs hypridle lines
-      so we know DPMS-stuck vs real S3.
-      **No SSH required** (post-#127 tooling): Caps Lock alive ⇒ machine is
-      up. Prefer **local TTY** over SSH:
-      1. `Ctrl+Alt+F3` → log in on the text console.
-      2. `nomarchy-display-wake` — try recovery (dpms on + undock rescue).
-      3. `nomarchy-display-dump` — writes `~/nomarchy-display-dump-*.txt`
-         (monitors, journals, DRM status). Open that file after the seat
-         is usable; no second machine needed.
-      4. Optional while unlocked: `SUPER+SHIFT+D` runs the same dump.
-      Auto: undock enable-fail and zero-output wake also dump under `~/`.
-      **Repro (after `nomarchy-home` + relogin so hypridle/watcher pick up):**
-      1. Dock, confirm dock mode (eDP disabled).
-      2. Idle past 10 min **or** force: `loginctl lock-session` then
-         `hyprctl dispatch dpms off`.
-      3. External KB/mouse — external should wake (`nomarchy-display-wake`
-         path). If not: TTY → dump → note.
-      4. Unplug external while black — eDP should return (undock + `dpms on`).
-      **Pass:** input wakes external while docked; undock while black restores
-      eDP without reboot; dump files only appear on real failures.
-      Related: docking recovery round 8 (awake undock) and BACKLOG #127.
+- [ ] **#127 docked idle — mitigation check (AMD dev box)** —
+      **Context:** original brick = docked idle → black, no input wake, undock
+      no eDP, Caps Lock alive; Ctrl+Alt+F3 gave no usable TTY. **Shipped
+      mitigation:** skip DPMS-off while docked (internal present-but-disabled);
+      lock at 5m still. Full DPMS-when-docked deferred (BACKLOG LATER).
+      **After `nomarchy-home` + relogin:**
+      1. Dock (eDP disabled in `hyprctl monitors all -j` / not in `monitors`).
+      2. Idle past 10+ min (or wait for hypridle).
+      3. **Pass mitigation:** external still shows hyprlock (not black power-save);
+         `journalctl --user -t nomarchy-idle --since '-20 min'` has
+         `dpms-off skipped: docked`.
+      4. Undocked control: eDP only → at 10 min screen *does* blank; input wakes.
+      Optional: `nomarchy-display-dump` / SUPER+SHIFT+D for other display faults.
+      Related: docking round 8; LATER “DPMS when docked”.
 - [ ] **#96 battery-limit row on threshold-less firmware (Acer M5-481T)** —
       on the Acer (live or installed session with the commit carrying this
       entry): open System (`SUPER+CTRL+I`). **Pass:** a "Battery limit" row