fix(display): docked idle wake + dump without SSH (#127)

Recover from DPMS/lock blackout without a second machine: undock/enable
always issue dpms on; hypridle on-resume and after_sleep run
nomarchy-display-wake (zero-output undock rescue + auto-dump).
nomarchy-display-dump writes ~/nomarchy-display-dump-*.txt (SUPER+SHIFT+D
or Ctrl+Alt+F3 TTY). HARDWARE-QUEUE #127 no longer requires SSH.

V1: nix flake check --no-build. V3: docked idle on AMD box still open.

modules/home/display-tools.nix

@@ -0,0 +1,103 @@
+# Shared display recovery helpers (#127). Used by hyprland.nix (PATH +
+# undock dump) and idle.nix (hypridle on-resume / after_sleep absolute paths).
+#
+# dump  — evidence to ~/nomarchy-display-dump-*.txt without SSH
+# wake  — dpms on + zero-output undock rescue + dump if still dark
+# Pass displayTransition so wake pins the same binary hyprland ships.
+# Call once with only pkgs to get dump (transition not ready yet), then
+# again with displayTransition for wake.
+{ pkgs, displayTransition ? null }:
+
+let
+  dump = pkgs.writeShellScriptBin "nomarchy-display-dump" ''
+    set -u
+    reason="''${1:-manual}"
+    stamp=$(date +%Y%m%d-%H%M%S)
+    out="''${HOME:-/tmp}/nomarchy-display-dump-''${stamp}.txt"
+    {
+      echo "=== nomarchy-display-dump reason=$reason ==="
+      echo "date: $(date -Is 2>/dev/null || date)"
+      echo "user: $(id -un 2>/dev/null || echo ?)"
+      echo "HYPRLAND_INSTANCE_SIGNATURE=''${HYPRLAND_INSTANCE_SIGNATURE:-}"
+      echo
+      echo "=== hyprctl monitors (enabled) ==="
+      hyprctl monitors -j 2>&1 || true
+      echo
+      echo "=== hyprctl monitors all ==="
+      hyprctl monitors all -j 2>&1 || true
+      echo
+      echo "=== hyprctl workspaces ==="
+      hyprctl workspaces -j 2>&1 || true
+      echo
+      echo "=== hyprctl devices (keyboards) ==="
+      hyprctl devices -j 2>/dev/null | ${pkgs.jq}/bin/jq '.keyboards // .' 2>&1 || true
+      echo
+      echo "=== systemd-inhibit --list ==="
+      ${pkgs.systemd}/bin/systemd-inhibit --list 2>&1 || true
+      echo
+      echo "=== DRM connector status ==="
+      for s in /sys/class/drm/*/status; do
+        [ -r "$s" ] || continue
+        echo "$s: $(cat "$s" 2>/dev/null)"
+      done
+      echo
+      echo "=== journal user display/idle (last 100) ==="
+      journalctl --user -t nomarchy-display-watch -t nomarchy-display-transition \
+        -t nomarchy-display-wake -t hypridle -t hyprlock -n 100 --no-pager 2>&1 || true
+      echo
+      echo "=== journal -b suspend/sleep/dpms (last 80 matching) ==="
+      journalctl -b --no-pager 2>/dev/null \
+        | ${pkgs.gnugrep}/bin/grep -iE 'Suspending|PM: suspend|PM: hibernate|dpms|sleep\.target|systemd-sleep' \
+        | ${pkgs.coreutils}/bin/tail -n 80 || true
+    } >"$out" 2>&1
+    ${pkgs.util-linux}/bin/logger -t nomarchy-display-dump -- "reason=$reason wrote $out"
+    command -v notify-send >/dev/null 2>&1 \
+      && notify-send "Display dump" "$out" 2>/dev/null || true
+    printf '%s\n' "$out"
+  '';
+
+  wake =
+    if displayTransition == null then null
+    else pkgs.writeShellScriptBin "nomarchy-display-wake" ''
+      set -u
+      LOGGER=${pkgs.util-linux}/bin/logger
+      log() { "$LOGGER" -t nomarchy-display-wake -- "$*"; }
+      TRANSITION=${displayTransition}/bin/nomarchy-display-transition
+      DUMP=${dump}/bin/nomarchy-display-dump
+      hyprctl dispatch dpms on >/dev/null 2>&1 || true
+      enabled=$(hyprctl monitors -j 2>/dev/null | ${pkgs.jq}/bin/jq 'length' 2>/dev/null || echo 0)
+      case "$enabled" in *[!0-9]*|"") enabled=0 ;; esac
+      if [ "$enabled" -eq 0 ]; then
+        log "zero-enabled-outputs: attempting internal enable"
+        internal=$(hyprctl monitors all -j 2>/dev/null \
+          | ${pkgs.jq}/bin/jq -r '.[] | select(.name | test("^(eDP|LVDS|DSI)")) | .name' 2>/dev/null \
+          | ${pkgs.coreutils}/bin/head -n1)
+        if [ -n "$internal" ]; then
+          if "$TRANSITION" undock "$internal" 2>/dev/null; then
+            log "rescued via undock internal=$internal"
+          elif "$TRANSITION" enable "$internal" 2>/dev/null; then
+            log "rescued via enable internal=$internal"
+          else
+            log "rescue failed internal=$internal"
+          fi
+        else
+          log "no internal output in monitors all"
+        fi
+        hyprctl dispatch dpms on >/dev/null 2>&1 || true
+        enabled=$(hyprctl monitors -j 2>/dev/null | ${pkgs.jq}/bin/jq 'length' 2>/dev/null || echo 0)
+        case "$enabled" in *[!0-9]*|"") enabled=0 ;; esac
+        if [ "$enabled" -eq 0 ]; then
+          log "still zero-enabled: dumping"
+          "$DUMP" auto-zero-after-wake >/dev/null 2>&1 || true
+        fi
+      fi
+      first=$(hyprctl monitors -j 2>/dev/null \
+        | ${pkgs.jq}/bin/jq -r '.[0].name // empty' 2>/dev/null || true)
+      [ -n "$first" ] && hyprctl dispatch focusmonitor "$first" >/dev/null 2>&1 || true
+      log "done enabled=$enabled first=''${first:-none}"
+    '';
+in
+{
+  displayDumpTool = dump;
+  displayWakeTool = wake;
+}