chore(deps): update beads digest to 28d6486

- lockFileMaintenance: Saturday 2-4pm (was Monday 5am)
- nix-stable-ecosystem: Saturday 2-4pm
- nix-unstable-ecosystem: Saturday 2-4pm
- Add nixpkgs-qt rule: Saturday 4-6pm (staggered)

This allows CI builds to run overnight Saturday→Sunday, with human
review Saturday evening and builds complete by Sunday morning.

Closes: x-ymkgu

flake.lock

@@ -8,17 +8,17 @@
         ]
       },
       "locked": {
-        "lastModified": 1769840331,
-        "narHash": "sha256-Yp0K4JoXX8EcHp1juH4OZ7dcCmkopDu4VvAgZEOxgL8=",
+        "lastModified": 1770601353,
+        "narHash": "sha256-PalPrOXi2ZkGak4hZzFE8lazfOFnMV/A2cKOCgKA4AY=",
         "owner": "steveyegge",
         "repo": "beads",
-        "rev": "93965b4abeed920a4701e03571d1b6bb75810722",
+        "rev": "28d64861937bb1acd72829828d6f710b1fb53604",
         "type": "github"
       },
       "original": {
         "owner": "steveyegge",
         "repo": "beads",
-        "rev": "93965b4abeed920a4701e03571d1b6bb75810722",
+        "rev": "28d64861937bb1acd72829828d6f710b1fb53604",
         "type": "github"
       }
     },
@@ -258,6 +258,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-qt": {
+      "locked": {
+        "lastModified": 1770464364,
+        "narHash": "sha256-z5NJPSBwsLf/OfD8WTmh79tlSU8XgIbwmk6qB1/TFzY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "23d72dabcb3b12469f57b37170fcbc1789bd7457",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1769170682,
@@ -347,6 +363,7 @@
         "nix-darwin": "nix-darwin",
         "nix-doom-emacs-unstraightened": "nix-doom-emacs-unstraightened",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-qt": "nixpkgs-qt",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "perles": "perles",
         "plasma-manager": "plasma-manager",

flake.nix

@@ -4,6 +4,9 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    # Separate nixpkgs for qt5webengine-dependent packages (jellyfin-media-player, etc.)
+    # Updates on separate Renovate schedule to avoid massive qt rebuilds
+    nixpkgs-qt.url = "github:nixos/nixpkgs/nixos-25.11";
 
     nix-darwin = {
       url = "github:nix-darwin/nix-darwin/nix-darwin-25.11";
@@ -45,7 +48,7 @@
     beads = {
       # v0.49.1 has dolt server mode support (gt-1mf.3)
       # Pinned to 259ddd92 - uses Go 1.24 compatible with nixpkgs
-      url = "github:steveyegge/beads/93965b4abeed920a4701e03571d1b6bb75810722";
+      url = "github:steveyegge/beads/28d64861937bb1acd72829828d6f710b1fb53604";
       inputs.nixpkgs.follows = "nixpkgs-unstable";
     };
 
@@ -76,6 +79,11 @@
         config.allowUnfree = true;
         overlays = unstableOverlays;
       };
+      # Separate nixpkgs for qt5webengine-heavy packages to avoid rebuild churn
+      qt-pinned = import inputs.nixpkgs-qt {
+        system = prev.stdenv.hostPlatform.system;
+        config.allowUnfree = true;
+      };
       custom = prev.callPackage ./packages {};
       # Compatibility: bitwarden renamed to bitwarden-desktop in unstable
       bitwarden-desktop = prev.bitwarden-desktop or prev.bitwarden;