ci: isolated Zapstore publish workflow

.github/workflows/zapstore-publish.yml

@@ -0,0 +1,56 @@
+name: Publish to Zapstore
+
+on:
+  workflow_run:
+    workflows: ["Release"]
+    types: [completed]
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    if: github.event.workflow_run.conclusion == 'success'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            zapstore.yaml
+            frontend/src-tauri/icons/icon.png
+
+      - name: Download APK from release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          RELEASE_TAG: ${{ github.event.workflow_run.head_branch }}
+        run: |
+          echo "Downloading APK from release $RELEASE_TAG"
+          gh release download "$RELEASE_TAG" \
+            --pattern "app-universal-release.apk" \
+            --dir .
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.22.x"
+
+      - name: Install zsp
+        run: |
+          go install "github.com/zapstore/zsp@v0.3.3"
+          echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH"
+
+      - name: Publish to Zapstore
+        env:
+          SIGN_WITH: ${{ secrets.ZAPSTORE_SIGN_WITH }}
+          COMMIT_SHA: ${{ github.event.workflow_run.head_sha }}
+        run: |
+          if [ -z "${SIGN_WITH}" ]; then
+            echo "Missing required secret: ZAPSTORE_SIGN_WITH" >&2
+            exit 1
+          fi
+
+          zsp publish \
+            -y \
+            --skip-preview \
+            --commit "$COMMIT_SHA" \
+            zapstore.yaml

zapstore.yaml

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+repository: https://github.com/OpenSecretCloud/Maple
+
+release_source: ./app-universal-release.apk
+
+name: Maple
+summary: Private AI Chat
+description: |
+  Maple is a private AI chat app by OpenSecret.
+
+  Learn more at https://trymaple.ai
+
+website: https://trymaple.ai
+license: MIT
+
+tags:
+  - ai
+  - chat
+  - privacy
+
+icon: ./frontend/src-tauri/icons/icon.png
+
+metadata_sources:
+  - github
+  - playstore