docs(android): document Gitea Pixel 10 releases

.gitea/workflows/pixel10.yml

@@ -17,6 +17,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Validate signing configuration
+        shell: bash
+        run: |
+          set -euo pipefail
+          test -n "$KEY_JKS"
+          test -n "$KEY_PASSWORD"
+          test -n "$KEY_ALIAS"
+          printf '%s' "$KEY_JKS" | base64 -d > "$KEY_PATH"
+          chmod 600 "$KEY_PATH"
+
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
@@ -78,14 +88,6 @@ jobs:
           IPTPROXY_SOURCE: ${{ runner.temp }}/IPtProxy
         run: melos run build-go-runtime --no-select
 
-      - name: Create release key
-        shell: bash
-        run: |
-          set -euo pipefail
-          test -n "$KEY_JKS"
-          printf '%s' "$KEY_JKS" | base64 -d > "$KEY_PATH"
-          chmod 600 "$KEY_PATH"
-
       - name: Build and verify Pixel 10 APK
         run: melos run build-browser-pixel10 --no-select