refactor: drop disko, simplify inputs, centralize fuse/rclone, bump state versions

- Remove disko everywhere:
  - Delete hosts/Nixbook/disko.nix and hosts/Nixtest/disko.nix
  - Drop disko input, modules, and disko-install app
  - Update README to remove disko mention
- Simplify flake inputs:
  - Use nixpkgs = nixos-unstable only
  - Home Manager -> master (follows nixpkgs)
  - Remove nixpkgs-unstable and vscode-extensions
  - Pass allowUnfree via specialArgs
- Centralize storage tools:
  - Add fuse3 and rclone to hosts/common/default.nix
  - Remove hosts/common/rclone.nix and screen.nix
  - Add user thiago to "fuse" group
  - Drop per-host rclone packages
- NVIDIA module:
  - Use pkgs.linuxPackages.nvidiaPackages.latest (no unstable import)
  - Keep nvidiaSettings=true, open=false
  - Remove sunshine service block
- Hosts:
  - Nixstation: remove Hyprland block, zramSwap 30% -> 25%
  - Clean hardware-configuration args
- Versions:
  - system.stateVersion: 24.05 -> 25.11 (Nixstation)
  - home.stateVersion: 24.05 -> 25.11
- README: adjust Nixbook and common modules descriptions

flake.nix

@@ -2,57 +2,43 @@
   description = "my NixOS Config";
 
   inputs = {
-    disko.url = "github:nix-community/disko";
-    disko.inputs.nixpkgs.follows = "nixpkgs";
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
-    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
     home-manager = {
       inputs.nixpkgs.follows = "nixpkgs";
-      url = "github:nix-community/home-manager/release-25.05";
+      url = "github:nix-community/home-manager/master";
     };
     nixvim = {
       url = "github:nix-community/nixvim";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-
-    vscode-extensions = {
-      url = "github:nix-community/nix-vscode-extensions";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-
-    flake-utils.follows = "vscode-extensions/flake-utils";
     flake-utils.inputs.nixpkgs.follows = "nixpkgs";
-    vs-extensions-pkgs.follows = "vscode-extensions/nixpkgs";
   };
 
   outputs =
     { self
     , nixpkgs
     , home-manager
-    , nixpkgs-unstable
     , ...
     }@inputs:
     let
       inherit (self) outputs;
-      system = "x86_64-linux";
-      unstable = import nixpkgs-unstable { inherit system; config.allowUnfree = true; };
-      pkgs = import nixpkgs { inherit system; config.allowUnfree = true; };
     in
     {
       nixosConfigurations = {
         Nixbook = nixpkgs.lib.nixosSystem {
           specialArgs = {
             inherit inputs outputs;
+            allowUnfree = true;
           };
           modules = [
             ./hosts/Nixbook
-            ./hosts/Nixbook/disko.nix
-            inputs.disko.nixosModules.disko
           ];
         };
         Nixstation = nixpkgs.lib.nixosSystem {
-          specialArgs = { inherit inputs outputs unstable; };
+          specialArgs = {
+            inherit inputs outputs;
+            allowUnfree = true;};
           modules = [
             ./hosts/Nixstation
           ];
@@ -83,12 +69,5 @@
           ];
         };
       };
-
-      apps.x86_64-linux.disko-install = {
-        type = "app";
-        program = "${inputs.disko.packages.x86_64-linux.disko}/bin/disko-install";
-      };
-
-      devShells.x86_64-linux = { };
     };
 }