fix(apps): improve Thunar and Mako integration

core/system/default.nix

@@ -18,6 +18,7 @@
     ./network.nix
     ./impermanence.nix
     ./browser.nix
+    ./file-manager.nix
     # Tier 1 system features (all opt-in via nomarchy.system.*).
     ./snapper.nix
     ./laptop.nix

core/system/file-manager.nix

@@ -0,0 +1,29 @@
+{ pkgs, lib, ... }:
+
+{
+  # Core system-side support for file management.
+  # This provides the backend services required by Thunar (and other file
+  # managers) to function correctly on a standalone compositor.
+
+  services.gvfs.enable = lib.mkDefault true;    # Mount, trash, and other file system operations
+  services.tumbler.enable = lib.mkDefault true; # Thumbnail support for images/videos/etc.
+
+  # Explicitly enable Thunar for D-Bus integration
+  programs.thunar.enable = lib.mkDefault true;
+
+  # Allow Thunar to use gvfs (trash, network mounts, etc.)
+  programs.thunar.plugins = with pkgs.xfce; [
+    thunar-archive-plugin
+    thunar-volman
+    thunar-media-tags-plugin
+  ];
+
+  # Supporting utilities for Thunar and general file management
+  environment.systemPackages = with pkgs; [
+    ffmpegthumbnailer # Video thumbnails
+    libgsf            # ODF thumbnails
+    poppler-utils     # PDF thumbnails
+    xfce.exo          # Required for "Open Terminal Here" and other associations
+    shared-mime-info  # Standard MIME database
+  ];
+}