feat(tauri): add auto-update functionality and release workflow

.github/workflows/release-tauri.yml

@@ -0,0 +1,98 @@
+name: Release Build
+
+on:
+    push:
+        tags:
+            - "v*" # Trigger on version tags like v0.1.0, v1.2.3
+    workflow_dispatch: # Allow manual trigger
+        inputs:
+            optimized:
+                description: "Build optimized release (LTO, size optimization)"
+                required: true
+                type: boolean
+                default: false
+
+jobs:
+    release:
+        permissions:
+            contents: write
+            packages: write
+        strategy:
+            fail-fast: false
+            matrix:
+                include:
+                    - platform: "macos-latest" # macOS Apple Silicon
+                      args: "--target aarch64-apple-darwin"
+                      rust_target: "aarch64-apple-darwin"
+                    - platform: "macos-latest" # macOS Intel
+                      args: "--target x86_64-apple-darwin"
+                      rust_target: "x86_64-apple-darwin"
+                    - platform: "ubuntu-22.04" # Linux
+                      args: ""
+                      rust_target: ""
+                    - platform: "windows-latest" # Windows
+                      args: ""
+                      rust_target: ""
+
+        runs-on: ${{ matrix.platform }}
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Install dependencies (Ubuntu only)
+              if: matrix.platform == 'ubuntu-22.04'
+              run: |
+                  sudo apt-get update
+                  sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf libasound2-dev
+
+            - name: Setup Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: "20"
+
+            - name: Install pnpm
+              uses: pnpm/action-setup@v4
+              with:
+                  version: 8
+
+            - name: Setup Rust
+              uses: dtolnay/rust-toolchain@stable
+              with:
+                  # Cross-compilation targets (macOS only)
+                  targets: ${{ matrix.rust_target }}
+
+            - name: Rust cache
+              uses: swatinem/rust-cache@v2
+              with:
+                  workspaces: "./src-tauri -> target"
+
+            - name: Install frontend dependencies
+              run: cd ui-react && pnpm install
+
+            - name: Setup optimized build config (if enabled)
+              if: github.event.inputs.optimized == 'true' || startsWith(github.ref, 'refs/tags/')
+              shell: bash
+              run: |
+                  cp src-tauri/.cargo/config-optimized.toml src-tauri/.cargo/config.toml
+
+            - name: Build Tauri app
+              uses: tauri-apps/tauri-action@v0
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+                  NODE_OPTIONS: "--max-old-space-size=8192" # Increase Node.js heap size to 8GB
+                  TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
+                  TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+              with:
+                  tagName: ${{ github.ref_name }}
+                  releaseName: "RetroChat v__VERSION__"
+                  releaseBody: "See the assets to download and install this version."
+                  releaseDraft: true
+                  prerelease: false
+                  args: ${{ matrix.args }}
+                  includeUpdaterJson: true
+
+            - name: Cleanup optimized config
+              if: always() && (github.event.inputs.optimized == 'true' || startsWith(github.ref, 'refs/tags/'))
+              shell: bash
+              run: |
+                  rm -f src-tauri/.cargo/config.toml

.gitignore

@@ -86,4 +86,5 @@ examples/local_*
 # Tauri build artifacts
 src-tauri/target/
 src-tauri/WixTools/
-src-tauri/gen/
+src-tauri/gen/
+src-tauri/.cargo/config.toml

src-tauri/.cargo/BUNDLE_SIZE.md

@@ -0,0 +1,17 @@
+# Bundle Sizes
+
+Default `cargo tauri build` output:
+
+1. **DMG size**: 10 MB
+2. **Binary size**: 25.9 MB
+
+Optimized `cargo tauri build` output:
+
+```
+cp src-tauri/.cargo/config-optimized.toml src-tauri/.cargo/config.toml
+cargo tauri build
+rm src-tauri/.cargo/config.toml
+```
+
+1. **DMG size**: 4.9 MB
+2. **Binary size**: 8.7 MB

src-tauri/.cargo/config-optimized.toml

@@ -0,0 +1,19 @@
+[profile.release]
+# Basic size optimizations that work on stable Rust
+opt-level = "z"        # Optimize for size instead of speed
+lto = true             # Enable Link Time Optimization
+codegen-units = 1      # Single codegen unit for better optimization
+strip = true           # Remove symbols from binary
+panic = "abort"        # Abort on panic instead of unwinding
+
+[target.x86_64-apple-darwin]
+# Stable-only optimizations (safe for dev builds)
+rustflags = [
+    "-C", "link-arg=-Wl,-dead_strip",  # Remove unused code at link time
+]
+
+[target.aarch64-apple-darwin]
+# Stable-only optimizations (safe for dev builds)
+rustflags = [
+    "-C", "link-arg=-Wl,-dead_strip",  # Remove unused code at link time
+]