fix: remove stale build artifacts from releases/ and add cleanup to Alpine build

- Add /releases/ to .gitignore to prevent tracking build artifacts
- Remove old 1.0.0 .deb files from git tracking
- Add stale .apk cleanup to build-alpine.sh (matching build-arch.sh)
- Add cleanup step to CI Alpine workflow to remove stale packages

Fixes Alpine package version mismatch caused by old artifacts in releases/

.gitea/workflows/ci.yml

@@ -315,6 +315,9 @@ jobs:
           apk add --no-cache alpine-sdk rust cargo openssl openssl-dev elogind-dev musl-dev abuild gcc
       - name: Build release binary
         run: cargo build --release --target x86_64-unknown-linux-musl
+      - name: Clean stale Alpine packages
+        run: |
+          rm -f releases/linux-patch-api-*.apk 2>/dev/null || true
       - name: Build Alpine package
         run: |
           chmod +x build-alpine.sh