diff --git a/config/firefox/search.nix b/config/firefox/search.nix
index 939e977..4c2823a 100644
--- a/config/firefox/search.nix
+++ b/config/firefox/search.nix
@@ -3,45 +3,6 @@
   default = "ddg";
   
   engines = {
-    "ddg" = {
-      urls = [{
-        template = "https://duckduckgo.com/?q={searchTerms}";
-      }];
-      icon = "https://duckduckgo.com/favicon.ico";
-      definedAliases = [ "@ddg" ];
-    };
-    
-    "Nix Packages" = {
-      urls = [{
-        template = "https://search.nixos.org/packages";
-        params = [
-          { name = "channel"; value = "unstable"; }
-          { name = "query"; value = "{searchTerms}"; }
-        ];
-      }];
-      definedAliases = [ "@nixpkg" ];
-    };
-
-    "Linkding" = {
-      urls = [{
-        template = "https://link.nas.yanlincs.com/bookmarks";
-        params = [
-          { name = "q"; value = "{searchTerms}"; }
-        ];
-      }];
-      definedAliases = [ "@link" ];
-    };
-
-    "google" = {
-      urls = [{
-        template = "https://www.google.com/search";
-        params = [
-          { name = "q"; value = "{searchTerms}"; }
-        ];
-      }];
-      definedAliases = [ "@g" ];
-    };
-    
     # Hide unwanted default search engines
     "google".metaData.hidden = true;
     "bing".metaData.hidden = true;
diff --git a/config/firefox/vimium-options.json b/config/firefox/vimium-options.json
index 3846cbd..394626f 100644
--- a/config/firefox/vimium-options.json
+++ b/config/firefox/vimium-options.json
@@ -15,7 +15,7 @@
   "scrollStepSize": 60,
   "smoothScroll": true,
   "grabBackFocus": false,
-  "searchEngines": "",
-  "searchUrl": "https://www.google.com/search?q=",
+  "searchEngines": "ddg: https://duckduckgo.com/?q=%s\nnix: https://search.nixos.org/packages?channel=unstable&query=%s\nlink: https://link.yanlincs.com/bookmarks?q=%s\ng: https://www.google.com/search?q=%s",
+  "searchUrl": "https://duckduckgo.com/?q=",
   "userDefinedLinkHintCss": "div > .vimiumHintMarker {\n  padding: 2px 3px;\n  background-color: #fabd2f;\n  color: #282828;\n  font-weight: bold;\n  font-size: 12px;\n  font-family: monospace;\n  border: 1px solid #282828;\n}\n\ndiv > .vimiumHintMarker span {\n  color: #282828;\n}\n\ndiv > .vimiumHintMarker > .matchingCharacter {\n  color: #fb4934;\n}"
 }
diff --git a/hosts/darwin/system-default.nix b/hosts/darwin/system-default.nix
index 3953c2d..e7b3032 100644
--- a/hosts/darwin/system-default.nix
+++ b/hosts/darwin/system-default.nix
@@ -50,12 +50,14 @@
       persistent-apps = [
         "/Applications/Firefox.app"
         "/Applications/Obsidian.app"
+        "/System/Applications/Preview.app"
         "/Applications/Ghostty.app"
         "/Applications/KeePassXC.app"
       ];
       persistent-others = [
         "/Users/yanlin/Desktop"
         "/Users/yanlin/Downloads"
+        "/Users/yanlin/Documents"
       ];              # List of folders/files to keep in dock
       
       # Hot Corners - Actions: