fix(configs): declaratively map all upstream config directories

- Replace hardcoded subset with dynamic mapping of the config/ directory
- Apply recursive=true to directories to allow downstream user overrides

modules/home/configs.nix

@@ -1,12 +1,30 @@
 { config, pkgs, ... }:
 
-{
-  xdg.configFile = {
-    "btop".source = ../../config/btop;
-    "chromium".source = ../../config/chromium;
-    "fastfetch".source = ../../config/fastfetch;
-    "kitty".source = ../../config/kitty;
-    "swayosd".source = ../../config/swayosd;
-    "xdg-terminals.list".source = ../../config/xdg-terminals.list;
+let
+  configDir = ../../config;
+  
+  # Read the contents of the config directory
+  configEntries = builtins.readDir configDir;
+  
+  # Files to explicitly exclude (handled elsewhere or not intended for ~/.config/)
+  excludedFiles = [
+    "nomarchy.ttf"
+  ];
+  
+  # Filter the entries
+  validEntries = builtins.filter (name: !(builtins.elem name excludedFiles)) (builtins.attrNames configEntries);
+
+  # Generate the xdg.configFile attribute set
+  # For directories, we use `recursive = true;` to allow the user to create their own files alongside the read-only defaults.
+  makeMapping = name: {
+    inherit name;
+    value = {
+      source = "${configDir}/${name}";
+      recursive = configEntries.${name} == "directory";
+    };
   };
+
+in
+{
+  xdg.configFile = builtins.listToAttrs (map makeMapping validEntries);
 }