fix: real-hardware QA sweep — wifi, fonts, firmware, Hyprland 0.55, offline switching

Roadmap items 1+2 plus the issues found testing on a Latitude 5410:

- Ship the 10 most popular Nerd Fonts by default (iosevka swapped for
  mononoki: 1.1 GB vs 27 MB) and warn from nomarchy-theme-sync when a
  configured fonts.mono/fonts.ui family isn't installed (fc-match) —
  fontconfig substitutes silently otherwise.
- hardware.enableRedistributableFirmware: installed systems shipped NO
  firmware blobs (wifi/SOF audio/BT) — nixos-generate-config only emits
  microcode lines referencing this flag, it never sets it.
- Live ISO wifi: networking.wireless.enable = mkForce false killed
  NetworkManager's supplicant — since 26.05 the NM module drives its
  wifi backend THROUGH networking.wireless (dbusControlled). Devices
  vanished from nmtui with iwlwifi loaded and no rfkill block.
- Hyprland 0.55: launch sessions via start-hyprland (watchdog; bare
  binary warns), add the new gesture keyword (workspace_swipe is gone —
  touchpads had no gestures at all), media keys via wpctl/bindel/bindl
  plus the missing mic/play/next/prev binds.
- Offline theme switching: pin mustache-go + stdenv + the repo's own
  standalone HM generation (incl. home-files inputDerivation) into the
  ISO — stylix re-renders base16 templates per switch and an offline
  `apply` cascaded into building stdenv from source (1107 drvs).
  Verified with tools/vm/gap-analysis.py: 17 config drvs, zero fetches.
- Stylix: track release-26.05 (kills the HM version-skew warning and
  the stale home-manager follows), lock updated.
- Roadmap: swaync (no notification daemon ships today).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

flake.lock

@@ -208,11 +208,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1780281641,
-        "narHash": "sha256-M/+hUKoKbHXpV0xGVfELbN1Ds1aoe3pL5p5/t46YhVo=",
+        "lastModified": 1779766384,
+        "narHash": "sha256-P7Ohnlq8b8b2fU+Sgkrej7LBTM60LBTkHleLuYzmLmU=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "30f9ae2f04174de63ba8bcf3580ca90843b28a01",
+        "rev": "57800b7ab648725ccd33551d01484ee14952ad3f",
         "type": "github"
       },
       "original": {
@@ -249,15 +249,16 @@
         "tinted-zed": "tinted-zed"
       },
       "locked": {
-        "lastModified": 1781018772,
-        "narHash": "sha256-C+cGIUaC6dqfwTbI+BwCd572PbESGA3WYxR1sLTqxkY=",
-        "owner": "danth",
+        "lastModified": 1780702455,
+        "narHash": "sha256-+srjPGNy67nKytYwdlepycL51IG6S34sS4MKRZXK8G0=",
+        "owner": "nix-community",
         "repo": "stylix",
-        "rev": "a378e4c09031fb15a4d65da88aa628f71fc52f6b",
+        "rev": "54fa19702f4f2c7f6a981a92850678933588af9a",
         "type": "github"
       },
       "original": {
-        "owner": "danth",
+        "owner": "nix-community",
+        "ref": "release-26.05",
         "repo": "stylix",
         "type": "github"
       }