feat(idle): no double-unlock after an encrypted hibernate resume

hypridle locks hyprlock before every sleep -- right for suspend, but
redundant for hibernate: the LUKS passphrase entered at boot already gates
the resume, so the user typed a password twice. Add a nomarchy-hibernate-
unlock systemd unit (WantedBy hibernate.target, After systemd-hibernate.service
=> runs post-resume) that dismisses hyprlock, gated on the disk being LUKS-
encrypted. Suspend (and the RAM-resume phase of suspend-then-hibernate) keep
locking -- they have no passphrase gate; an unencrypted hibernate keeps its
lock too. idle.nix gains a pointer comment; roadmap item marked done.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -386,11 +386,14 @@ close · `SUPER+1..9` workspaces · `Print` region screenshot.
   logo/lock/bullet → text, entry/progress-box → surface, progress-bar →
   accent. Reads on light and dark; follows the theme as of the last system
   rebuild (like the background tint).
-- **Hibernate double-unlock:** on resume from hibernate the LUKS
+- ✓ **Hibernate double-unlock:** on resume from hibernate the LUKS
   passphrase already gates the machine, but hypridle's `before_sleep_cmd`
-  also locks hyprlock, so the user types a password twice. Lock only on
-  suspend (not hibernate), or skip the hyprlock prompt when resuming from
-  a LUKS-encrypted hibernate — see `modules/home/idle.nix`.
+  also locked hyprlock, so the user typed a password twice. Fixed with a
+  `nomarchy-hibernate-unlock` systemd unit (`modules/nixos/default.nix`)
+  that dismisses hyprlock *after* a hibernate resume (`WantedBy
+  hibernate.target`, `After systemd-hibernate.service` → runs post-resume),
+  gated on the disk being LUKS-encrypted. Suspend (and the RAM-resume phase
+  of suspend-then-hibernate) keep locking — they have no passphrase gate.
 - ✓ **Key agents & pinentry:** ships `modules/home/keys.nix`
   (`nomarchy.keys.enable`): one agent — `services.gpg-agent` with
   `enableSshSupport` fronts SSH, so a single `pinentry-qt` (native-Wayland,

modules/home/idle.nix

@@ -54,6 +54,10 @@ in
       settings = {
         general = {
           lock_cmd = "pidof hyprlock || hyprlock";
+          # Locks before every sleep. For suspend that's exactly right; on an
+          # encrypted hibernate the LUKS resume already gates the machine, so
+          # the system side dismisses this lock post-resume to avoid a double
+          # unlock — see nomarchy-hibernate-unlock in modules/nixos/default.nix.
           before_sleep_cmd = "loginctl lock-session";
           after_sleep_cmd = "hyprctl dispatch dpms on";
         };

modules/nixos/default.nix

@@ -114,6 +114,26 @@ in
     services.upower.enable = lib.mkDefault true;
     networking.networkmanager.enable = lib.mkDefault true;
 
+    # No double-unlock on hibernate. hypridle locks hyprlock before every
+    # sleep (right for suspend), but a hibernate resume is already gated by
+    # the LUKS passphrase entered at boot — so the user would type a password
+    # twice. Once we're back from an *encrypted* hibernate, drop the now-
+    # redundant hyprlock. Ordered After the hibernate service, so it runs
+    # post-resume; pulled in only by hibernate.target (suspend, and the
+    # RAM-resume phase of suspend-then-hibernate, stay locked — they have no
+    # passphrase gate). Gated on LUKS: an unencrypted hibernate keeps its lock.
+    systemd.services.nomarchy-hibernate-unlock =
+      lib.mkIf (builtins.attrNames config.boot.initrd.luks.devices != [ ]) {
+        description = "Dismiss hyprlock after resuming from an encrypted hibernate";
+        after = [ "systemd-hibernate.service" ];
+        wantedBy = [ "hibernate.target" ];
+        serviceConfig = {
+          Type = "oneshot";
+          # `-`: a missing hyprlock (idle disabled, or not locked) isn't a failure.
+          ExecStart = "-${pkgs.procps}/bin/pkill -x hyprlock";
+        };
+      };
+
     # zsh as the default login shell (the desktop's shell experience —
     # starship/bat/eza/zoxide — is configured home-side in shell.nix).
     # programs.zsh.enable wires /etc/zshrc, completion and /etc/shells;