Disable Opencode; update flake.lock and librewolf

- Opencode module disabled in desktop, laptop, and default host configs
- Updated flake.lock revisions for firefox‑addons, home‑manager, nixpkgs
  and stylix
- Librewolf now uses pkgs.librewolf (source) instead of the binary
  package

flake.lock

@@ -165,11 +165,11 @@
       },
       "locked": {
         "dir": "pkgs/firefox-addons",
-        "lastModified": 1766203416,
-        "narHash": "sha256-UrIuqnXvM+73owAiq1zjHNtaWrv72wD1yKO6jTowhTQ=",
+        "lastModified": 1766462603,
+        "narHash": "sha256-rLllnfVL2+mUQbWJs4l7ln5kOBuQc62oPhHqDEzbmMk=",
         "owner": "rycee",
         "repo": "nur-expressions",
-        "rev": "8b55bb199045aa79e2965b7482b04ee4773192e3",
+        "rev": "b19da314b14c0056fced72bd2ab24562f74000ea",
         "type": "gitlab"
       },
       "original": {
@@ -369,11 +369,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1766171975,
-        "narHash": "sha256-47Ee0bTidhF/3/sHuYnWRuxcCrrm0mBNDxBkOTd3wWQ=",
+        "lastModified": 1766387499,
+        "narHash": "sha256-AjK3/UKDzeXFeYNLVBaJ3+HLE9he1g5UrlNd4/BM3eA=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "bb35f07cc95a73aacbaf1f7f46bb8a3f40f265b5",
+        "rev": "527ad07e6625302b648ed3b28c34b62a79bd103e",
         "type": "github"
       },
       "original": {
@@ -442,11 +442,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1766070988,
-        "narHash": "sha256-G/WVghka6c4bAzMhTwT2vjLccg/awmHkdKSd2JrycLc=",
+        "lastModified": 1766309749,
+        "narHash": "sha256-3xY8CZ4rSnQ0NqGhMKAy5vgC+2IVK0NoVEzDoOh4DA4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "c6245e83d836d0433170a16eb185cefe0572f8b8",
+        "rev": "a6531044f6d0bef691ea18d4d4ce44d0daa6e816",
         "type": "github"
       },
       "original": {
@@ -611,11 +611,11 @@
         "tinted-zed": "tinted-zed"
       },
       "locked": {
-        "lastModified": 1765897595,
-        "narHash": "sha256-NgTRxiEC5y96zrhdBygnY+mSzk5FWMML39PcRGVJmxg=",
+        "lastModified": 1766440186,
+        "narHash": "sha256-7B/dntEDan+pMB8B/sG6599f3mQaySAJL+c9NhdMP7k=",
         "owner": "danth",
         "repo": "stylix",
-        "rev": "e6829552d4bb659ebab00f08c61d8c62754763f3",
+        "rev": "844294a58ef0badb3067c4f2fe063030537eb624",
         "type": "github"
       },
       "original": {