Add macOS arm64 CI build workflow

.github/workflows/build-macos-arm64.yml

@@ -0,0 +1,61 @@
+name: Build macOS arm64
+run-name: Build ${{ github.ref_name }} (macOS arm64)
+on:
+    workflow_dispatch:
+env:
+    NODE_VERSION: 22
+    NODE_OPTIONS: --max-old-space-size=4096
+jobs:
+    build-macos:
+        runs-on: macos-latest
+        steps:
+            - uses: actions/checkout@v6
+            - uses: actions/setup-go@v6
+              with:
+                  go-version-file: go.mod
+                  cache-dependency-path: |
+                      go.sum
+            - uses: actions/setup-node@v6
+              with:
+                  node-version: ${{ env.NODE_VERSION }}
+                  cache: npm
+                  cache-dependency-path: package-lock.json
+            - name: Force git deps to HTTPS
+              run: |
+                  git config --global url.https://github.com/.insteadof ssh://git@github.com/
+                  git config --global url.https://github.com/.insteadof git@github.com:
+            - uses: nick-fields/retry@v4
+              name: npm ci
+              with:
+                  command: npm ci --no-audit --no-fund
+                  retry_on: error
+                  max_attempts: 3
+                  timeout_minutes: 5
+              env:
+                  GIT_ASKPASS: "echo"
+                  GIT_TERMINAL_PROMPT: "0"
+            - name: Install Task
+              uses: arduino/setup-task@v2
+              with:
+                  version: 3.x
+                  repo-token: ${{ secrets.GITHUB_TOKEN }}
+            - name: Build
+              run: task package -- --arm64
+            - name: Upload artifacts
+              uses: actions/upload-artifact@v5
+              with:
+                  name: waveterm-macos-arm64
+                  path: make/*.dmg
+            - name: Write install instructions
+              run: |
+                  {
+                      echo "## Install"
+                      echo ""
+                      echo "1. Download the \`waveterm-macos-arm64\` artifact below, unzip it, and open the \`.dmg\`."
+                      echo "2. Drag **Wave** into \`/Applications\`."
+                      echo "3. This build is not notarized, so macOS Gatekeeper will block it. Clear the quarantine flag before first launch:"
+                      echo ""
+                      echo '```bash'
+                      echo "xattr -cr /Applications/Wave.app"
+                      echo '```'
+                  } >> "$GITHUB_STEP_SUMMARY"