Add GitHub Actions CI/CD pipelines

- Add build pipeline for Windows, macOS, and Linux
- Add release pipeline for automated releases
- Remove CLAUDE.md from git tracking

.github/workflows/build.yml

@@ -0,0 +1,109 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+      - develop
+  pull_request:
+    branches:
+      - main
+      - develop
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: 'macos-latest'
+            args: '--target aarch64-apple-darwin'
+          - platform: 'macos-latest'
+            args: '--target x86_64-apple-darwin'
+          - platform: 'ubuntu-22.04'
+            args: ''
+          - platform: 'windows-latest'
+            args: ''
+
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.15.1
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.platform == 'macos-latest' && 'aarch64-apple-darwin,x86_64-apple-darwin' || '' }}
+
+      - name: Install dependencies (Ubuntu)
+        if: matrix.platform == 'ubuntu-22.04'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf libssl-dev
+
+      - name: Get pnpm store directory
+        shell: bash
+        run: |
+          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+      - name: Setup pnpm cache
+        uses: actions/cache@v4
+        with:
+          path: ${{ env.STORE_PATH }}
+          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-pnpm-store-
+
+      - name: Setup Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: src-tauri
+
+      - name: Install frontend dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build Tauri app
+        uses: tauri-apps/tauri-action@v0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          args: ${{ matrix.args }}
+
+      - name: Upload artifacts (macOS)
+        if: matrix.platform == 'macos-latest'
+        uses: actions/upload-artifact@v4
+        with:
+          name: macos-${{ contains(matrix.args, 'aarch64') && 'aarch64' || 'x86_64' }}
+          path: |
+            src-tauri/target/*/release/bundle/dmg/*.dmg
+            src-tauri/target/*/release/bundle/macos/*.app
+
+      - name: Upload artifacts (Ubuntu)
+        if: matrix.platform == 'ubuntu-22.04'
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux
+          path: |
+            src-tauri/target/release/bundle/deb/*.deb
+            src-tauri/target/release/bundle/appimage/*.AppImage
+            src-tauri/target/release/bundle/rpm/*.rpm
+
+      - name: Upload artifacts (Windows)
+        if: matrix.platform == 'windows-latest'
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows
+          path: |
+            src-tauri/target/release/bundle/msi/*.msi
+            src-tauri/target/release/bundle/nsis/*.exe