Update flakes to use new locked versions

dotfiles/.nix-channels

@@ -1 +1 @@
-https://nixos.org/channels/nixos-unstable nixos
+https://nixos.org/channels/nixos-25.05 nixos

nixos/flake.lock

@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "zen-browser",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1743604125,
+        "narHash": "sha256-ZD61DNbsBt1mQbinAaaEqKaJk2RFo9R/j+eYWeGMx7A=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "180fd43eea296e62ae68e079fcf56aba268b9a1a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 0,
@@ -14,11 +35,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1735471104,
-        "narHash": "sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs=",
+        "lastModified": 1743448293,
+        "narHash": "sha256-bmEPmSjJakAp/JojZRrUvNcDX2R5/nuX6bm+seVaGhs=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "88195a94f390381c6afcdaa933c2f6ff93959cb4",
+        "rev": "77b584d61ff80b4cef9245829a6f1dfad5afdfa3",
         "type": "github"
       },
       "original": {
@@ -36,14 +57,15 @@
     },
     "zen-browser": {
       "inputs": {
+        "home-manager": "home-manager",
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1739161281,
-        "narHash": "sha256-cMM5E5EzEnfQFdBurCVqCi9mhsmRCeaEJB4iskPsQ1o=",
+        "lastModified": 1748060564,
+        "narHash": "sha256-KTceiwnQm5MFAjtQtSp2/lkodwSd2jub/wCYfVGIFKI=",
         "owner": "0xc000022070",
         "repo": "zen-browser-flake",
-        "rev": "0e962f036e6e2a9dde28f37d80104c7ea477a801",
+        "rev": "1963b92737b62652fa85e1dfc57d5f4c6d28aea4",
         "type": "github"
       },
       "original": {

nixos/users.nix

@@ -21,6 +21,7 @@
       logseq
       element-desktop
       cinny-desktop
+      signal-desktop
       go-task
       opentofu
       python3