refactor: cleanup configs, unify session handling

- flake.nix:
  - Close braces formatting for `allowUnfree`
  - Remove per-user `custom.sessionType` modules
- home-manager:
  - home.nix: remove unused apps (bambu-studio, hydralauncher, keymapp, etc.)
    - drop librespot service
    - add waydroid
    - fix kitty font_family spacing
  - gnome: add gnome-tweaks and appindicator extension
  - vim: update nixvim module import path
  - zsh: drop sessionType option and conditional aliases
    - hardcode wl-copy/wl-paste as pbcopy/pbpaste
- hyprland: style fixes in braces, spacing, keybind comments
- hosts/Nixstation:
  - remove gnome-session and redundant tweaks
  - remove env vars NIXOS_HOST / NIXOS_DE
  - enable virtualization (libvirtd, spiceUSBRedirection, vmware.host=false)
- hardware-configuration: reformat fileSystems definitions
- common/nvidia:
  - remove explicit kernelPackages override
  - ensure xserver.enable=true and GNOME/GDM config intact
- users/thiago: reorder and regroup extraGroups list

home-manager/home.nix

@@ -26,40 +26,26 @@
   home = {
     homeDirectory = "/home/thiago";
     packages = with pkgs; [
-      bambu-studio
       direnv
       fira-code
       firefox
       heroic
       hwinfo
-      hydralauncher
       inkscape
-      wl-clipboard
-      kanshi
-      keymapp
       lazygit
       libinput
-      librespot
-      luarocks
-      nerd-fonts.gohufont
       nerd-fonts.fira-code
       nil
       nixpkgs-fmt
       nordic
       obsidian
       python3
-      python3Packages.pip
       ripgrep
-      shfmt
       statix
-      stylua
-      sysbench
-      swaybg
-      transmission_4
       uget
       unzip
+      waydroid
       wl-clipboard
-      zed-editor
     ];
     username = "thiago";
   };
@@ -113,12 +99,11 @@
       settings = {
         hide_window_decorations = "titlebar-only";
         font_size = 18;
-        font_family="GohuFont 14 Nerd Font Mono";
+        font_family = "GohuFont 14 Nerd Font Mono";
         inactive_text_alpha = "0.6";
         # background_blur = 32;
         background_opacity = 1.0;
       };
-      themeFile = "Nord";
     };
 
     vscode = {
@@ -126,29 +111,6 @@
     };
   };
 
-  systemd.user.services.librespot-connect = {
-    Unit = {
-      Description = "Librespot (Spotify Connect) bound to LAN interface";
-      After = [ "network.target" ];
-    };
-    Service = {
-      ExecStart = "${pkgs.librespot}/bin/librespot \
-        --name LS-TEST \
-        --backend pulseaudio \
-        --device default \
-        --bitrate 320 \
-        --disable-audio-cache \
-        --enable-volume-normalisation \
-        --initial-volume 75 \
-        --zeroconf-port 17005";
-      Restart = "on-failure";
-      BindToDevice = "wlp7s0"; # Force binding to LAN interface
-    };
-    Install = {
-      WantedBy = [ "default.target" ];
-    };
-  };
-
   systemd.user.startServices = "sd-switch";
   home.stateVersion = "25.11";
 }