chore: update to new unified zen browser flake

Flake lock file updates:

• Updated input 'zen-browser':
    'github:youwen5/zen-browser-flake/29ef2755b4ba40f3c0c00cf89b7a8c9c62b977b2' (2024-11-06)
  → 'github:youwen5/zen-browser-flake/5b37eb79b4f909506492f12f5ad0c231023159f6' (2024-11-12)
• Added input 'zen-browser/zen-browser-source':
    'github:youwen5/zen-browser-source-flake/4d151693f8fdf58bdcdc63ea51d1420b5779577c' (2024-11-12)
• Added input 'zen-browser/zen-browser-source/flake-parts':
    'github:hercules-ci/flake-parts/506278e768c2a08bec68eb62932193e341f55c90' (2024-11-01)
• Added input 'zen-browser/zen-browser-source/flake-parts/nixpkgs-lib':
    'cc2f280002.tar.gz?narHash=sha256-lXvH/vOfb4aGYyvFmZK/HlsNsr/0CVWlwYvo2rxJk3s%3D' (2024-11-01)
• Added input 'zen-browser/zen-browser-source/nixpkgs':
    'github:NixOS/nixpkgs/76612b17c0ce71689921ca12d9ffdc9c23ce40b2' (2024-11-09)

flake.lock

@@ -853,8 +853,7 @@
         "vesktop-bin": "vesktop-bin",
         "viminal": "viminal",
         "wallpapers": "wallpapers",
-        "zen-browser": "zen-browser",
-        "zen-browser-source": "zen-browser-source"
+        "zen-browser": "zen-browser"
       }
     },
     "rust-analyzer-src": {
@@ -1157,15 +1156,18 @@
     "zen-browser": {
       "inputs": {
         "nixpkgs": [
+          "zen-browser",
+          "zen-browser-source",
           "nixpkgs"
-        ]
+        ],
+        "zen-browser-source": "zen-browser-source"
       },
       "locked": {
-        "lastModified": 1730925960,
-        "narHash": "sha256-S5zn2So/kwgZcW+2ICsXS1E+yJPBAFx1fQXyC2DfIZM=",
+        "lastModified": 1731397745,
+        "narHash": "sha256-Dcgf1mW46TVEOc0BxsaGcpnxxWOQLRglguFoRTYy/1c=",
         "owner": "youwen5",
         "repo": "zen-browser-flake",
-        "rev": "29ef2755b4ba40f3c0c00cf89b7a8c9c62b977b2",
+        "rev": "5b37eb79b4f909506492f12f5ad0c231023159f6",
         "type": "github"
       },
       "original": {
@@ -1182,11 +1184,11 @@
         "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1731292739,
-        "narHash": "sha256-c0ED1Yu1AamD3RXsH1kLvvP8gdhGp/HB8AJfzJw7Ph0=",
+        "lastModified": 1731377913,
+        "narHash": "sha256-U/NKOKRChr15VE2zT583iOJ/uBpAARBKfiAeNB+XNq4=",
         "owner": "youwen5",
         "repo": "zen-browser-source-flake",
-        "rev": "dc72f9d9456cd732ad9eb78f8e3d676aa807d554",
+        "rev": "4d151693f8fdf58bdcdc63ea51d1420b5779577c",
         "type": "github"
       },
       "original": {

flake.nix

@@ -91,11 +91,8 @@
 
     zen-browser = {
       url = "github:youwen5/zen-browser-flake";
-      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.zen-browser-source.inputs.flake-parts.follows = "flake-parts";
     };
-
-    zen-browser-source.url = "github:youwen5/zen-browser-source-flake";
-    zen-browser-source.inputs.flake-parts.follows = "flake-parts";
   };
 
   outputs =

overlays/default.nix

@@ -12,13 +12,7 @@ in
 {
   nixpkgs.overlays = [
     (self: super: {
-      zen-browser =
-        if system == "x86_64-linux" then
-          inputs.zen-browser.packages.${system}.default
-        else if system == "aarch64-linux" then
-          inputs.zen-browser-source.packages.${system}.default
-        else
-          null;
+      zen-browser = inputs.zen-browser.packages.${system}.default;
     })
   ];
 }