diff --git a/nixcfgs/flake.nix b/nixcfgs/flake.nix
index f87b8d9..a4a669a 100644
--- a/nixcfgs/flake.nix
+++ b/nixcfgs/flake.nix
@@ -104,8 +104,6 @@
     nixosHosts = [
       "zp"
       "zephyrus"
-      "nixvirt"
-      "polder"
     ];
     darwinHosts = [
       "zen"
diff --git a/nixcfgs/modules/nixos/desktop/de/gnome.nix b/nixcfgs/modules/nixos/desktop/de/gnome.nix
index 062b689..84285a1 100644
--- a/nixcfgs/modules/nixos/desktop/de/gnome.nix
+++ b/nixcfgs/modules/nixos/desktop/de/gnome.nix
@@ -22,5 +22,6 @@
     baobab # Disk Usage Analyzer, use dust instead
     epiphany # GNOME Web
     gnome-system-monitor # use mission-center
+    gnome-terminal
   ];
 }
diff --git a/nixcfgs/users/js0ny/lib/mergetools.nix b/nixcfgs/users/js0ny/lib/mergetools.nix
index 3d69bde..0fc9e59 100644
--- a/nixcfgs/users/js0ny/lib/mergetools.nix
+++ b/nixcfgs/users/js0ny/lib/mergetools.nix
@@ -39,6 +39,59 @@
       fi
     '';
   };
+  mkMergedJson = {
+    name,
+    target,
+    settings,
+  }: let
+    jsonContent = builtins.toJSON settings;
+    patchFile = "${target}.nix-managed";
+  in {
+    home.file."${patchFile}".text = jsonContent;
+
+    home.activation."merge-${name}" = lib.hm.dag.entryAfter ["writeBoundary"] ''
+      TARGET="$HOME/${target}"
+      PATCH="$HOME/${patchFile}"
+
+      if [ -f "$PATCH" ]; then
+        verboseEcho "Merging Nix managed JSON config into: $TARGET"
+
+        run mkdir -p "$(dirname "$TARGET")"
+
+        if [ ! -f "$TARGET" ]; then
+          echo "{}" > "$TARGET"
+        fi
+
+        run ${pkgs.yq-go}/bin/yq -i -o json -P --indent 2 ". *= load(\"$PATCH\")" "$TARGET"
+      fi
+    '';
+  };
+  mkMergedIni = {
+    name,
+    target,
+    settings,
+  }: let
+    iniContent = lib.generators.toINI {} settings;
+    patchFile = "${target}.nix-managed";
+  in {
+    home.file."${patchFile}".text = iniContent;
+
+    home.activation."merge-${name}" = lib.hm.dag.entryAfter ["writeBoundary"] ''
+      TARGET="$HOME/${target}"
+      PATCH="$HOME/${patchFile}"
+      if [ -f "$PATCH" ]; then
+        verboseEcho "Merging Nix managed INI config into: $TARGET"
+
+        run mkdir -p "$(dirname "$TARGET")"
+
+        if [ ! -f "$TARGET" ]; then
+          echo "" > "$TARGET"
+        fi
+
+      run ${pkgs.crudini}/bin/crudini --merge "$TARGET" < "$PATCH"
+      fi
+    '';
+  };
 in {
-  inherit mkMergedYaml;
+  inherit mkMergedYaml mkMergedJson mkMergedIni;
 }
diff --git a/nixcfgs/users/js0ny/packages/gui.nix b/nixcfgs/users/js0ny/packages/gui.nix
index 9a9fef2..4814dec 100644
--- a/nixcfgs/users/js0ny/packages/gui.nix
+++ b/nixcfgs/users/js0ny/packages/gui.nix
@@ -118,6 +118,7 @@ in {
       mission-center
       calibre
       dconf-editor
+      fsearch # Everything-like search tool
     ]
     ++ (mkFcitxIM [
       pkgs.neovim-qt
diff --git a/nixcfgs/users/js0ny/packages/stylix.nix b/nixcfgs/users/js0ny/packages/stylix.nix
index d157762..eab052c 100644
--- a/nixcfgs/users/js0ny/packages/stylix.nix
+++ b/nixcfgs/users/js0ny/packages/stylix.nix
@@ -71,8 +71,8 @@ in {
       };
     };
 
-    base16Scheme = "${pkgs.base16-schemes}/share/themes/gruvbox-material-dark-soft.yaml";
+    base16Scheme = "${pkgs.base16-schemes}/share/themes/gruvbox-light-medium.yaml";
     image = ./wallpaper.jpg;
-    polarity = "dark";
+    polarity = "light";
   };
 }
diff --git a/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix b/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
index 029fd8e..99089f6 100644
--- a/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
+++ b/nixcfgs/users/js0ny/programs/desktop/gnome/default.nix
@@ -22,6 +22,7 @@ in {
     [
       gnome-tweaks
       sushi
+      nautilus-open-any-terminal
     ]
     ++ extensions;
   programs.gnome-shell.enable = true;
diff --git a/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/keymaps.nix b/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/keymaps.nix
index 2bf8e7e..fc1c030 100644
--- a/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/keymaps.nix
+++ b/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/keymaps.nix
@@ -21,22 +21,24 @@ in {
     "Mod+B".action = spawn "${lib.getExe nirictl.focusOrLaunch}" "firefox" "firefox";
     "Mod+Shift+B".hotkey-overlay.title = "Launch web browser in private mode";
     "Mod+Shift+B".action = spawn "firefox" "--private-window";
-    "Mod+A".action = spawn-sh "${term} --class=kitty-terminal-popup -e aichat --session";
+    "Mod+A".action = spawn-sh "${term} --class=terminal-popup -e aichat --session";
     "Mod+Shift+A".hotkey-overlay.title = "Focus or launch CherryStudio (AI assistant)";
     "Mod+Shift+A".action = spawn "${lib.getExe nirictl.focusOrLaunch}" "CherryStudio" "cherry-studio";
     "Mod+O".hotkey-overlay.title = "Focus or launch Obsidian";
     "Mod+O".action = spawn "${lib.getExe nirictl.focusOrLaunch}" "obsidian" "obsidian";
     # See: programs/obsidian/obsidian-grep.nix
-    "Mod+Shift+O".action = spawn-sh "${term} --class=kitty-terminal-popup -e obsidian-grep && ${lib.getExe nirictl.focusOrLaunch} obsidian obsidian";
+    "Mod+Shift+O".action = spawn-sh "${term} --app-id=terminal-popup -e obsidian-grep && ${lib.getExe nirictl.focusOrLaunch} obsidian obsidian";
     # TODO: Change "org.kde.dolphin" to a more generic explorer app id via config.currentUser
-    "Mod+E".hotkey-overlay.title = "Focus or launch file explorer";
-    "Mod+E".action = spawn "${lib.getExe nirictl.focusOrLaunch}" "org.kde.dolphin" "dolphin";
-    "Mod+Alt+Return".action = spawn-sh "${term} --class=kitty-terminal-popup";
-    "Mod+Shift+Alt+Return".action = spawn-sh "${term} --class=kitty--terminal-popup --working-directory='${config.home.homeDirectory}/.config/shells/nohist' -e nix develop";
+    "Mod+E".hotkey-overlay.title = "Launch file explorer";
+    # "Mod+E".action = spawn "${lib.getExe nirictl.focusOrLaunch}" "org.kde.dolphin" "dolphin";
+    "Mod+E".action = spawn-sh "xdg-open ~";
+    "Mod+Shift+E".action = spawn "fsearch";
+    "Mod+Shift+Return".action = spawn-sh "${term} --app-id=terminal-popup";
+    # "Mod+Shift+Alt+Return".action = spawn-sh "${term} --app-id=kitty--terminal-popup --working-directory='${config.home.homeDirectory}/.config/shells/nohist' -e nix develop";
 
-    "Mod+Shift+Return".action = spawn "neovide" "${config.home.homeDirectory}/Atelier";
+    "Mod+Alt+Return".action = spawn "neovide" "${config.home.homeDirectory}/Atelier";
     "Mod+Apostrophe".action =
-      spawn-sh "EDITOR_MINIMAL=1 ${term} -o close_on_child_death=yes --class=kitty-terminal-popup -e edit-clipboard --minimal";
+      spawn-sh "EDITOR_MINIMAL=1 ${term} -o close_on_child_death=yes --app-id=terminal-popup -e edit-clipboard --minimal";
 
     "Mod+Shift+Slash".action = show-hotkey-overlay;
 
diff --git a/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/window-rules.nix b/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/window-rules.nix
index d7ca4e7..f16fc4a 100644
--- a/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/window-rules.nix
+++ b/nixcfgs/users/js0ny/programs/desktop/wayland-wm/niri/window-rules.nix
@@ -7,11 +7,27 @@
           {
             app-id = "^.*terminal-popup$";
           }
+          {
+            app-id = "^fsearch$";
+          }
         ];
 
         open-floating = true;
         opacity = 0.8;
       }
+      {
+        matches = [
+          {
+            app-id = "^org.gnome.NautilusPreviewer$";
+          }
+          {
+            app-id = "^org.gnome.Nautilus$";
+            title = "^Select Document$";
+          }
+        ];
+
+        open-floating = true;
+      }
       # {{{ float, opacity 0.8, top right: Picture-in-Picture // waybar childs
       {
         matches = [
diff --git a/nixcfgs/users/js0ny/programs/feishin.nix b/nixcfgs/users/js0ny/programs/feishin.nix
new file mode 100644
index 0000000..48e7a71
--- /dev/null
+++ b/nixcfgs/users/js0ny/programs/feishin.nix
@@ -0,0 +1,28 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: let
+  mergetools = import ../lib/mergetools.nix {inherit pkgs lib config;};
+  mkMergedJson = mergetools.mkMergedJson;
+  feishinConfig = mkMergedJson {
+    name = "feishin-config";
+    target = ".config/feishin/config.json";
+    settings = {
+      theme = "system";
+      window_has_frame = false;
+      release_channel = "latest";
+      global_media_hotkeys = true;
+      window_window_bar_style = "windows";
+      disable_auto_updates = true;
+    };
+  };
+in {
+  home.packages = [
+    pkgs.feishin
+  ];
+  imports = [
+    feishinConfig
+  ];
+}
diff --git a/nixcfgs/users/js0ny/programs/firefox/default.nix b/nixcfgs/users/js0ny/programs/firefox/default.nix
index cabb7d1..a0e4357 100644
--- a/nixcfgs/users/js0ny/programs/firefox/default.nix
+++ b/nixcfgs/users/js0ny/programs/firefox/default.nix
@@ -33,6 +33,18 @@
         # * 3: Restore Previous Session
         "browser.startup.page" = 3;
         "browser.sessionstore.resume_from_crash" = true;
+        ### Sync
+        "services.sync.declinedEngines" = "creditcards,passwords,addresses,prefs,addons";
+        "services.sync.engine.addons" = false;
+        "services.sync.engine.addresses" = false;
+        "services.sync.engine.bookmarks" = true;
+        "services.sync.engine.creditcards" = false;
+        "services.sync.engine.history" = true;
+        "services.sync.engine.passwords" = false;
+        "services.sync.engine.prefs" = false;
+        "services.sync.engine.prefs.modified" = false;
+        "services.sync.engine.tabs" = true;
+        "services.sync.engins.tabs.filteredSchemes" = "about|resource|chrome|file|blob|moz-extension|data";
       };
     };
   };
diff --git a/nixcfgs/users/js0ny/programs/fsearch.nix b/nixcfgs/users/js0ny/programs/fsearch.nix
new file mode 100644
index 0000000..24deafc
--- /dev/null
+++ b/nixcfgs/users/js0ny/programs/fsearch.nix
@@ -0,0 +1,54 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: let
+  mergetools = import ../lib/mergetools.nix {inherit pkgs lib config;};
+  mkMergeIni = mergetools.mkMergedIni;
+  # username = config.home.username;
+  fsearchConf = mkMergeIni {
+    name = "fsearch-conf";
+    target = ".config/fsearch/fsearch.conf";
+    settings = {
+      Interface = {
+        single_click_open = false;
+        launch_desktop_files = true;
+        highlight_search_terms = true;
+        double_click_path = false;
+        enable_list_tooltips = true;
+        enable_dark_theme = true;
+        show_menubar = true;
+        show_statusbar = true;
+        show_filter = true;
+      };
+      Search = {
+        search_as_you_type = true;
+        auto_search_in_path = true;
+        hide_results_on_empty_search = true;
+      };
+      Database = {
+        update_database_on_launch = true;
+        update_database_every = false;
+        update_database_every_hours = 0;
+        update_database_every_minutes = 15;
+        exclude_hidden_files_and_folders = false;
+        follow_symbolic_links = false;
+        exclude_location_1 = "/proc";
+        exclude_location_enabled_1 = true;
+        exclude_location_2 = "/sys";
+        exclude_location_enabled_2 = true;
+        exclude_location_3 = "/nix";
+        exclude_location_enabled_3 = true;
+        exclude_location_4 = "/tmp";
+        exclude_location_enabled_4 = true;
+        exclude_files = ".git;.Xil;.filen_trash_local;.direnv;.devcontainer;.cache;.bin;.github;.idea*;.bak;.history;.metadata;.jj;.jobs;node_modules;.log;.gradle;.fingerprint;.filen.trash.local;.settings;.vscode;__pycache__;xwechat_files;SiYuan;.trash;.obsidian;.project;.cproject;.gitignore;*.mk;*.o;*.d;*.checksum;*.bit;top.mmi;*.elf;*.log;impl_1;*.cache;*.runs;*.sim;hw.xml;*.hw;*.ip_user_files;*.runs;vivado.jou;vivado.log;vivado*.jou;vivado*.log;utils_1";
+      };
+    };
+  };
+in {
+  imports = [fsearchConf];
+  home.packages = with pkgs; [
+    fsearch
+  ];
+}
diff --git a/nixcfgs/users/js0ny/programs/mime.nix b/nixcfgs/users/js0ny/programs/mime.nix
index 3b73500..3aa44f6 100644
--- a/nixcfgs/users/js0ny/programs/mime.nix
+++ b/nixcfgs/users/js0ny/programs/mime.nix
@@ -74,7 +74,8 @@ in {
       mkAssoc "sioyek.desktop;org.kde.okular;" ["application/pdf"]
       // mkAssoc gvim simpleText
       // {
-        "inode/directory" = "org.kde.dolphin.desktop";
+        # "inode/directory" = "org.kde.dolphin.desktop";
+        "inode/directory" = "org.gnome.Nautilus.desktop";
       }
       // mkAssoc imageViewers image
       // mkAssoc "onlyoffice-desktopeditors.desktop" [
diff --git a/nixcfgs/users/js0ny/programs/telegram.nix b/nixcfgs/users/js0ny/programs/telegram.nix
index bb52f0f..e81dff1 100644
--- a/nixcfgs/users/js0ny/programs/telegram.nix
+++ b/nixcfgs/users/js0ny/programs/telegram.nix
@@ -3,86 +3,90 @@
   lib,
   ...
 }: let
+  mod =
+    if pkgs.stdenv.isDarwin
+    then "meta"
+    else "alt";
   shortcuts = builtins.toJSON [
     {
       command = "previous_chat";
-      keys = "alt+k";
+      keys = "${mod}+k";
     }
     {
       command = "next_chat";
-      keys = "alt+j";
+      keys = "${mod}+j";
     }
     {
       command = "self_chat";
-      keys = "alt+0";
+      keys = "${mod}+0";
     }
     {
       command = "pinned_chat1";
-      keys = "alt+1";
+      keys = "${mod}+1";
     }
     {
       command = "all_chats";
-      keys = "alt+1";
+      keys = "${mod}+1";
     }
     {
       command = "pinned_chat2";
-      keys = "alt+2";
+      keys = "${mod}+2";
     }
     {
       command = "folder1";
-      keys = "alt+2";
+      keys = "${mod}+2";
     }
     {
       command = "pinned_chat3";
-      keys = "alt+3";
+      keys = "${mod}+3";
     }
     {
       command = "folder2";
-      keys = "alt+3";
+      keys = "${mod}+3";
     }
     {
       command = "pinned_chat4";
-      keys = "alt+4";
+      keys = "${mod}+4";
     }
     {
       command = "folder3";
-      keys = "alt+4";
+      keys = "${mod}+4";
     }
     {
       command = "pinned_chat5";
-      keys = "alt+5";
+      keys = "${mod}+5";
     }
     {
       command = "folder4";
-      keys = "alt+5";
+      keys = "${mod}+5";
     }
     {
       command = "pinned_chat6";
-      keys = "alt+6";
+      keys = "${mod}+6";
     }
     {
       command = "folder5";
-      keys = "alt+6";
+      keys = "${mod}+6";
     }
     {
       command = "pinned_chat7";
-      keys = "alt+7";
+      keys = "${mod}+7";
     }
     {
       command = "folder6";
-      keys = "alt+7";
+      keys = "${mod}+7";
     }
     {
       command = "pinned_chat8";
-      keys = "alt+8";
+      keys = "${mod}+8";
     }
     {
       command = "last_folder";
-      keys = "alt+8";
+      keys = "${mod}+8";
     }
     {
       command = "show_archive";
-      keys = "alt+9";
+      keys = "${mod}+9";
     }
   ];
 in {
@@ -95,4 +99,10 @@ in {
     "materialgram/tdata/shortcuts-custom.json".text = shortcuts;
     "TelegramDesktop/tdata/shortcuts-custom.json".text = shortcuts;
   };
+  home.file =
+    if pkgs.stdenv.isDarwin
+    then {
+      "Library/Application Support/Telegram Desktop/tdata/shortcuts-custom.json".text = shortcuts;
+    }
+    else {};
 }
diff --git a/nixcfgs/users/js0ny/zephyrus.nix b/nixcfgs/users/js0ny/zephyrus.nix
index 3da14c8..b12a10d 100644
--- a/nixcfgs/users/js0ny/zephyrus.nix
+++ b/nixcfgs/users/js0ny/zephyrus.nix
@@ -77,6 +77,8 @@ in {
     ./programs/picard.nix
     ./programs/cider-2.nix
     ./programs/telegram.nix
+    ./programs/feishin.nix
+    ./programs/fsearch.nix
 
     # Desktop Linux
     ./programs/desktop/gnome