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

hosts/common/nvidia/default.nix

@@ -1,6 +1,4 @@
-{ config
-, pkgs
-, unstable
+{ pkgs
 , ...
 }:
 {
@@ -19,39 +17,27 @@
     };
     nvidia = {
       modesetting.enable = true;
+      nvidiaSettings = true;
+      open = false; # keep it like that for now, unstable!!
+      package = pkgs.linuxPackages.nvidiaPackages.latest;
       powerManagement.enable = false;
       powerManagement.finegrained = false;
-      open = false; # keep it like that for now, unstable!!
-      nvidiaSettings = true;
-      package = unstable.linuxPackages.nvidiaPackages.latest;
     };
   };
 
   services = {
-    sunshine = {
-      enable = false;
-      # autoStart = true;
-      # openFirewall = true;
-      package = pkgs.sunshine.overrideAttrs (old: {
-        cmakeFlags = (old.cmakeFlags or [ ]) ++ [
-          "-DSUNSHINE_ENABLE_CUDA=OFF"
-          "-DCUDA_FAIL_ON_MISSING=OFF"
-        ];
-      });
-    };
     xserver = {
       videoDrivers = [ "nvidia" ];
     };
   };
   nixpkgs.config.cudaSupport = true;
   environment.systemPackages = with pkgs; [
-    mesa
+    cudaPackages.cuda_nvcc
+    cudaPackages.cudatoolkit
     glxinfo
     libepoxy
     libglvnd
+    mesa
     nvidia-container-toolkit
-    cudaPackages.cudatoolkit
-    cudaPackages.cuda_nvcc
   ];
-
 }