terra: cosmic portals, jupiter smb mount, tea CLI, launcher/theme polish

- swap gtk portal/apps for cosmic (xdg-desktop-portal-cosmic, cosmic-files,
  cosmic-settings) and drop dolphin/protonplus/bambu-studio (bambu-studio
  moved to flatpak alongside the other comms/gaming flatpaks)
- mount jupiter's samba share at /mnt/jupiter (automount, credentials from
  the same samba_password secret jupiter itself uses)
- add tea (gitea's remote API CLI) for talking to git.mgaction.town from
  terra without SSHing into jupiter
- new dark icon themes (Amy, Azure Glassy, Slot Beauty) vendored from
  gnome-look.org tarballs, packaged since pling download links expire
- rishot: fix Qt5Compat.GraphicalEffects QML import (was missing qt6.qt5compat
  on QML_IMPORT_PATH, so quickshell failed at config-load)
- launcher widgets: stop LauncherConsole/LauncherDock from reserving
  compositor space (ExclusionMode.Ignore, they're overlays not real docks);
  bump LauncherCorner app icon size 28->34
- comms script: launch telegram/discord via flatpak, not native binaries
- nix-ld + boot.binfmt aarch64 emulation (for building/flashing mercury
  from terra)

hosts/terra/home.nix

@@ -1,83 +1,56 @@
 { pkgs, unstable, ... }:
 
-# home-manager profile for darman on terra. The Hyprland config lives in its
-# own module (./hyprland.nix); this handles the rest of the user session
-# (theming, terminal, packages).
 {
-  imports = [ ./home/hyprland.nix ];
+  imports = [ ./home/hyprland.nix ./home/theme.nix ];
 
   home.stateVersion = "26.05";
   home.keyboard.layout = "de";
 
-  programs.git.enable = true;
-  programs.home-manager.enable = true;
-
-  # Give darman a managed ~/.zshrc. Without any zsh dotfile, zsh runs its
-  # first-run `zsh-newuser-install` prompt on every new terminal. oh-my-zsh +
-  # powerlevel10k still come from the system /etc/zshrc (common.nix), which
-  # always loads for interactive shells before this ~/.zshrc.
-  programs.zsh.enable = true;
-
-  # ---- Dracula theming (GTK + Qt) ----
-  gtk = {
+  programs.git = {
     enable = true;
-    theme = {
-      name = "Dracula";
-      package = pkgs.dracula-theme;
+    settings = {
+      user.name = "Erik Simon";
+      user.email = "mail@erik-s.dev";
     };
   };
+  programs.home-manager.enable = true;
 
-  # GTK4 / libadwaita apps ignore gtk-theme-name; they only read the dconf
-  # color-scheme key via the portal. Writing it here persists it across reboots
-  # (the gsettings call in the Hyprland autostart only lasts the session).
-  dconf.settings."org/gnome/desktop/interface" = {
-    color-scheme = "prefer-dark";
-    gtk-theme = "Dracula";
-  };
+  programs.zsh.enable = true;
 
-  # dracula-qt5-theme ships only a qt5ct color scheme (no style plugin), so
-  # Qt has to go through qt(5|6)ct rather than a direct style/platformTheme
-  # name. "qtct" pulls in both qt5ct and qt6ct; qt6ct reads its own config
-  # but understands the same scheme file format, so both point at it.
-  qt = {
+  xdg.userDirs = {
     enable = true;
-    platformTheme.name = "qtct";
   };
-  xdg.configFile."qt5ct/qt5ct.conf".text = ''
-    [Appearance]
-    color_scheme_path=${pkgs.dracula-qt5-theme}/share/qt5ct/colors/Dracula.conf
-    custom_palette=true
-    style=Fusion
-  '';
-  xdg.configFile."qt6ct/qt6ct.conf".text = ''
-    [Appearance]
-    color_scheme_path=${pkgs.dracula-qt5-theme}/share/qt5ct/colors/Dracula.conf
-    custom_palette=true
-    style=Fusion
-  '';
 
-  # Custom mime-info defs (sln/slnx). xdg.mime's update-mime-database only
-  # indexes share/mime/packages inside the hm profile itself, so this has to
-  # be a package in home.packages, not a plain xdg.dataFile.
   xdg.mime.enable = true;
   xdg.configFile."quickshell".source = ../../dotfiles/quickshell;
   xdg.configFile."scripts".source = ../../dotfiles/scripts;
+
   home.packages = [
     (pkgs.writeTextDir "share/mime/packages/application-x-ms-sln.xml"
       (builtins.readFile ../../dotfiles/mime/application-x-ms-sln.xml))
     unstable.claude-code
-    pkgs.quickshell
     pkgs.opencode
+    pkgs.quickshell
+    pkgs.github-cli
+    pkgs.tea
     pkgs.hyprcursor
     pkgs.bibata-cursors
+    pkgs.papirus-icon-theme
   ];
 
+  xdg.desktopEntries.btop = {
+    name = "btop++";
+    genericName = "System Monitor";
+    exec = "btop";
+    icon = "btop";
+    terminal = true;
+    categories = [ "System" "Monitor" ];
+    noDisplay = true;
+  };
+
   programs.alacritty = {
     enable = true;
     settings = {
-      # NixOS has no /bin/zsh (only /bin/sh); point at the real store path or
-      # alacritty exits instantly trying to exec a missing shell — which looked
-      # like "the SUPER+Return keybind doesn't work".
       env.SHELL = "${pkgs.zsh}/bin/zsh";
       terminal.shell = {
         program = "${pkgs.zsh}/bin/zsh";
@@ -92,7 +65,7 @@
         style = "Regular";
       };
       colors.primary = {
-        background = "#222831";
+        background = "#0F1012";
         foreground = "#ffd369";
       };
  #     hints.enabled = [