ci(release): smoke-test the release APK on an emulator, drop the BrowserStack trigger

The release workflow ended by triggering BrowserStack tests in
appium-mobile-tests with a personal token. The token expired on 2026-10-17, so
every release build since is red, and the BrowserStack run behind it had never
produced a result (it fails uploading the app, KeyError 'app_url', since
2026-08-03). Its tests mostly asserted nothing.

In its place, every release build now installs the APK on an x86_64 API 34
emulator on a GitHub-hosted runner, launches it, and fails unless the
first-run welcome screen appears with both its create and restore buttons and
the app has neither crashed nor exited. The screen is matched by view id, so
it holds in any locale. A screenshot, the view tree and logcat are kept as an
artifact. It needs no account and no stored secret, and it can be run by hand
against the APK of an earlier run.

.github/scripts/smoke-test.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Installs a release APK on the running emulator, launches it and waits for the
+# first-run welcome screen. Fails if the app crashes, dies, or never shows the
+# screen. Matches the screen by view id, not text, so it holds in any locale.
+set -euo pipefail
+
+APK="$1"
+PKG="io.pezkuwichain.wallet"
+OUT="${SMOKE_OUT:-smoke-out}"
+TIMEOUT=120
+mkdir -p "$OUT"
+
+fail() {
+  echo "::error::$1"
+  adb exec-out screencap -p > "$OUT/screen.png" || true
+  adb shell uiautomator dump /sdcard/ui.xml >/dev/null 2>&1 && adb pull /sdcard/ui.xml "$OUT/ui.xml" >/dev/null || true
+  adb logcat -d > "$OUT/logcat.txt" || true
+  exit 1
+}
+
+adb install -r "$APK" >/dev/null || fail "install failed"
+adb logcat -c
+adb shell monkey -p "$PKG" -c android.intent.category.LAUNCHER 1 >/dev/null 2>&1 || fail "launch failed"
+
+for _ in $(seq 1 $((TIMEOUT / 3))); do
+  sleep 3
+  if adb logcat -d -b crash | grep -q "Process: $PKG"; then
+    fail "the app crashed on launch"
+  fi
+  adb shell pidof "$PKG" >/dev/null || fail "the app process is gone"
+  adb shell uiautomator dump /sdcard/ui.xml >/dev/null 2>&1 || continue
+  if adb exec-out cat /sdcard/ui.xml | grep -q "$PKG:id/welcomeCreateWalletButton" &&
+     adb exec-out cat /sdcard/ui.xml | grep -q "$PKG:id/welcomeRestoreWalletButton"; then
+    echo "welcome screen shown, both create and restore buttons present"
+    adb exec-out screencap -p > "$OUT/screen.png" || true
+    exit 0
+  fi
+done
+fail "the welcome screen did not appear within ${TIMEOUT}s"

.github/workflows/appium-mobile-tests.yml

@@ -1,71 +0,0 @@
-name: Appium Mobile Tests
-
-on:
-  workflow_call:
-    inputs:
-      app_url:
-        type: string
-        description: URL to download the app from
-        required: true
-      test_grep:
-        type: string
-        description: Test pattern to run (pytest marker or test name)
-        required: false
-        default: "android"
-      allure_job_run_id:
-        type: string
-        description: ALLURE_JOB_RUN_ID service parameter. Leave blank.
-        required: false
-        default: ""
-      allure_username:
-        type: string
-        description: ALLURE_USERNAME service parameter. Leave blank.
-        required: false
-        default: ""
-    secrets:
-      WORKFLOW_TOKEN:
-        required: true
-      ALLURE_TOKEN:
-        required: false
-
-env:
-  PYTHON_VERSION: '3.9'
-  CI: true
-  ALLURE_ENDPOINT: https://pezkuwi.testops.cloud/
-  ALLURE_PROJECT_ID: 103
-
-permissions:
-  contents: read
-
-jobs:
-  trigger-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Trigger mobile tests in test repository
-        uses: actions/github-script@v7
-        with:
-          github-token: ${{ secrets.WORKFLOW_TOKEN }} 
-          script: |
-            const response = await github.rest.actions.createWorkflowDispatch({
-              owner: 'pezkuwichain', 
-              repo: 'appium-mobile-tests', 
-              workflow_id: 'browserstack-tests.yml',
-              ref: 'master', 
-              inputs: {
-                app_url: '${{ inputs.app_url }}',                
-                ALLURE_JOB_RUN_ID: '${{ inputs.allure_job_run_id }}',
-                ALLURE_USERNAME: '${{ inputs.allure_username }}'
-              }
-            });
-            
-            console.log('Mobile tests triggered successfully');
-            console.log('App URL:', '${{ inputs.app_url }}');            
-            
-      - name: Wait for test completion (optional)
-        if: false 
-        uses: actions/github-script@v7
-        with:
-          github-token: ${{ secrets.WORKFLOW_TOKEN }} 
-          script: |            
-            console.log('Waiting for test completion...');
-            

.github/workflows/emulator_smoke_test.yml

@@ -0,0 +1,55 @@
+name: Emulator smoke test
+
+# Installs the release APK on an Android emulator and checks it starts and
+# reaches the welcome screen. Called by the release workflow on every build;
+# can be run by hand against the APK of an earlier run.
+
+on:
+  workflow_call:
+  workflow_dispatch:
+    inputs:
+      run-id:
+        description: "Run whose 'apk' artifact to test"
+        required: true
+
+permissions:
+  contents: read
+  actions: read
+
+jobs:
+  smoke-test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download built artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: apk
+          path: app
+          run-id: ${{ inputs.run-id || github.run_id }}
+          github-token: ${{ github.token }}
+
+      - name: Enable KVM
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+
+      - name: Launch the app on an emulator
+        uses: reactivecircus/android-emulator-runner@a421e43855164a8197daf9d8d40fe71c6996bb0d # v2.38.0
+        with:
+          api-level: 34
+          target: google_apis
+          arch: x86_64
+          disable-animations: true
+          script: .github/scripts/smoke-test.sh app/releaseMarket/app-releaseMarket.apk
+
+      - name: Upload screen, view tree and logcat
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: smoke-test-output
+          path: smoke-out/
+          if-no-files-found: ignore

.github/workflows/push_develop.yml

@@ -69,14 +69,9 @@ jobs:
         run: |
           echo "App uploaded to: ${{ steps.s3_upload.outputs.s3_url }}"
 
-  appium-mobile-tests:
-    needs: [upload-to-s3]
-    if: ${{ always() && needs.upload-to-s3.result == 'success' }}
-    uses: ./.github/workflows/appium-mobile-tests.yml
-    with:
-      app_url: ${{ needs.upload-to-s3.outputs.s3_url }}
-      test_grep: "android"
-      allure_job_run_id: ""
-    secrets:
-      WORKFLOW_TOKEN: ${{ secrets.PAT_TOKEN }}
-      ALLURE_TOKEN: ${{ secrets.ALLURE_TOKEN }}
+  smoke-test:
+    needs: build
+    permissions:
+      contents: read
+      actions: read
+    uses: ./.github/workflows/emulator_smoke_test.yml