docs: add nix/nixos docs & update deps

Co-authored-by: juve <juevmail8@gmail.com>

README-NIX.md

@@ -0,0 +1,172 @@
+##  Add to NixOS system configuration
+
+Add DBX as a flake input and include the package in `environment.systemPackages`.
+
+### `flake.nix`
+
+```nix
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    dbx = {
+      url = "github:t8y2/dbx";
+      inputs.nixpkgs.follows = "nixpkgs"; # optional
+    };
+  };
+
+  outputs = { self, nixpkgs, dbx, ... }: {
+    nixosConfigurations.my-machine = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        ./configuration.nix
+        {
+          environment.systemPackages = [
+            dbx.packages.x86_64-linux.dbx-desktop
+          ];
+        }
+      ];
+    };
+  };
+}
+```
+
+### Apply
+
+```bash
+sudo nixos-rebuild switch --flake .#my-machine
+```
+
+---
+
+## Add via Home Manager
+
+This method installs DBX for a specific user through [Home Manager](https://github.com/nix-community/home-manager).
+
+> [!NOTE]
+> The `inputs.nixpkgs.follows = "nixpkgs"` line is **optional**.
+> It prevents Nix from downloading a second copy of nixpkgs, but it also makes
+> DBX ineligible for the upstream binary cache (it will be built locally).
+> Remove that line if you prefer to download a pre-built binary.
+
+### `flake.nix` (standalone Home Manager)
+
+```nix
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs"; 
+    };
+
+    dbx = {
+      url = "github:t8y2/dbx";
+      inputs.nixpkgs.follows = "nixpkgs"; # optional
+    };
+  };
+
+  outputs = { self, nixpkgs, home-manager, dbx, ... }: {
+    homeConfigurations."youruser" = home-manager.lib.homeManagerConfiguration {
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+      system = "x86_64-linux";
+      modules = [
+        {
+          home.packages = [
+            dbx.packages.x86_64-linux.dbx-desktop
+          ];
+        }
+      ];
+    };
+  };
+}
+```
+
+### `flake.nix` (NixOS + Home Manager as a NixOS module)
+
+```nix
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    dbx = {
+      url = "github:t8y2/dbx";
+      inputs.nixpkgs.follows = "nixpkgs"; # optional
+    };
+  };
+
+  outputs = { self, nixpkgs, home-manager, dbx, ... }: {
+    nixosConfigurations.my-machine = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        ./configuration.nix
+        home-manager.nixosModules.home-manager
+        {
+          home-manager.users.youruser = {
+            home.packages = [
+              dbx.packages.x86_64-linux.dbx-desktop
+            ];
+          };
+        }
+      ];
+    };
+  };
+}
+```
+
+> Replace `youruser` with your actual Linux username and `my-machine` with your hostname.
+
+### Apply (standalone)
+
+```bash
+home-manager switch --flake .#youruser
+```
+
+### Apply (NixOS module)
+
+```bash
+sudo nixos-rebuild switch --flake .#my-machine
+```
+
+---
+
+## Development Shell
+
+If you are contributing to DBX or building it from a local clone, the flake provides a fully configured development shell with Rust, Node.js, pnpm, and all GTK/WebKit system libraries:
+
+```bash
+git clone https://github.com/t8y2/dbx
+cd dbx
+nix develop
+```
+
+Inside the shell:
+
+| Task | Command |
+|---|---|
+| Desktop app (Tauri) | `pnpm install && pnpm dev:tauri` |
+| Web frontend only | `pnpm dev:web` |
+| Web backend only | `pnpm dev:backend` |
+| Release build | `pnpm tauri build` |
+
+---
+
+## Building from Source
+
+Build the `dbx-desktop` package directly from the flake:
+
+```bash
+nix build github:t8y2/dbx#dbx-desktop
+# or, from a local clone:
+nix build .#dbx-desktop
+```
+
+The resulting binary is available at `./result/bin/dbx`.
+
+---

README.md

@@ -252,6 +252,10 @@ No additional dependencies required.
 sudo apt-get install -y libwebkit2gtk-4.1-dev libgtk-3-dev libappindicator3-dev librsvg2-dev patchelf libssl-dev
 ```
 
+**NIXOS/NIX :** 
+
+<a href="README-NIX.md">See README-NIX.md</a>
+
 **Windows:**
 
 No additional dependencies required.

README.zh-CN.md

@@ -251,6 +251,10 @@ environment:
 sudo apt-get install -y libwebkit2gtk-4.1-dev libgtk-3-dev libappindicator3-dev librsvg2-dev patchelf libssl-dev
 ```
 
+**NIXOS/NIX :** 
+
+<a href="README-NIX.md">查看 README-NIX.md</a>
+
 **Windows：**
 
 无需额外安装。

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1782467914,
+        "lastModified": 1782723713,
-        "narHash": "sha256-pGvFkM8N0xEkIIXDe5YYfbEAvHrk4IxBrjB/x8OomhE=",
+        "narHash": "sha256-oPXCU/SSUokcGaJREHibG1CBX3+s/W7orDWQOZDsEeQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e73de5be04e0eff4190a1432b946d469c794e7b4",
+        "rev": "b5aa0fbd538984f6e3d201be0005b4463d8b09f8",
         "type": "github"
       },
       "original": {
@@ -48,11 +48,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1782703273,
+        "lastModified": 1782789458,
-        "narHash": "sha256-WJPfr9EAWVIuTMyb/ilHKUYlg/RNa0xrNiWR+p1iHUg=",
+        "narHash": "sha256-CR55gKCChD9ffN1Ag5az20Z3RD4tylHlcM1SSohkMA8=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "5106a604b3d67cffe8eb51a8bd9f04e607f0d31d",
+        "rev": "067959ef838c440558ca519cf08ca87f43c3db3a",
         "type": "github"
       },
       "original": {