Add cross-platform native wallet GUI using Slint

Co-authored-by: Steake <530040+Steake@users.noreply.github.com>

Author: Copilot

.github/workflows/release.yml

@@ -51,8 +51,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-${{ matrix.target }}-cargo-
 
+      - name: Install Linux dependencies
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libfontconfig1-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libxkbcommon-dev
+
       - name: Build release binaries
-        run: cargo build --release --target ${{ matrix.target }} -p bitcell-node -p bitcell-admin -p bitcell-wallet
+        run: cargo build --release --target ${{ matrix.target }} -p bitcell-node -p bitcell-admin -p bitcell-wallet -p bitcell-wallet-gui
 
       - name: Create artifact directory
         shell: bash
@@ -65,6 +71,7 @@ jobs:
           cp target/${{ matrix.target }}/release/bitcell-node artifacts/
           cp target/${{ matrix.target }}/release/bitcell-admin artifacts/
           cp target/${{ matrix.target }}/release/bitcell-wallet artifacts/
+          cp target/${{ matrix.target }}/release/bitcell-wallet-gui artifacts/
 
       - name: Copy binaries (Windows)
         if: runner.os == 'Windows'
@@ -73,6 +80,7 @@ jobs:
           cp target/${{ matrix.target }}/release/bitcell-node.exe artifacts/
           cp target/${{ matrix.target }}/release/bitcell-admin.exe artifacts/
           cp target/${{ matrix.target }}/release/bitcell-wallet.exe artifacts/
+          cp target/${{ matrix.target }}/release/bitcell-wallet-gui.exe artifacts/
 
       - name: Create archive (Unix)
         if: runner.os != 'Windows'

Cargo.toml

@@ -13,6 +13,7 @@ members = [
     "crates/bitcell-admin",
     "crates/bitcell-simulation",
     "crates/bitcell-wallet",
+    "crates/bitcell-wallet-gui",
 ]
 resolver = "2"
 

crates/bitcell-wallet-gui/Cargo.toml

@@ -0,0 +1,34 @@
+[package]
+name = "bitcell-wallet-gui"
+version.workspace = true
+authors.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+license.workspace = true
+repository.workspace = true
+description = "Cross-platform native GUI for BitCell wallet using Slint"
+
+[[bin]]
+name = "bitcell-wallet-gui"
+path = "src/main.rs"
+
+[dependencies]
+bitcell-wallet = { path = "../bitcell-wallet" }
+bitcell-crypto = { path = "../bitcell-crypto" }
+
+# Slint UI framework - native rendering, no WebView
+slint = "1.9"
+
+# Serialization
+serde.workspace = true
+serde_json = "1.0"
+
+# Error handling
+thiserror.workspace = true
+anyhow.workspace = true
+
+[build-dependencies]
+slint-build = "1.9"
+
+[features]
+default = []

crates/bitcell-wallet-gui/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    slint_build::compile("ui/main.slint").expect("Slint compile failed");
+}