feat(cac-lsphp): detached lsphp (LSAPI) site image for the shared-ols tier

New slim per-site PHP backend that runs 'lsphp -b 0.0.0.0:9000' (detached
LSAPI) and nothing else — the LiteSpeed analogue of cac-fpm, sitting behind
a shared OpenLiteSpeed container. Built on the same litespeedtech prebuilt
base as cac-litespeed so the lsphp runtime/extensions are identical.

- Dockerfile.lsphp: base + lsphpNN-ldap parity, reuses shared lsphp-overrides.ini,
  exposes only :9000, no webserver started (guaranteed by entrypoint, not by
  stripping OLS binaries).
- entrypoint-lsphp.sh: same uid/user contract + /home/$user/logs layout +
  ini drop-in mechanism as entrypoint-litespeed.sh; sizes PHP_LSAPI_CHILDREN
  from container memory (detect-memory-lsphp.sh) with panel override precedence;
  execs lsphp -b as the per-site user via setpriv (PID 1).
- detect-memory-lsphp.sh: LSAPI_CHILDREN sizing, no OLS daemon reserve.
- healthcheck-lsphp.sh: TCP :9000 + lsphp-alive (LSAPI isn't FastCGI).
- CI: Build-LSPHP-Images job, php81-85 matrix, OLS 1.8.4, cac-lsphp:phpNN.

Verified locally: builds php83+php85; sidecar runs lsphp as the per-site
user (uid 61045) as PID 1, healthcheck green, and a real shared OLS in front
serves PHP over LSAPI (HTTP 200, SAPI=litespeed) with identical docroot path.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitea/workflows/build-push.yaml

@@ -117,6 +117,47 @@ jobs:
             repo.anhonesthost.net/cloud-hosting-platform/cac-litespeed:php${{ matrix.phpver }}
             ${{ matrix.phpver == '85' && 'repo.anhonesthost.net/cloud-hosting-platform/cac-litespeed:latest' || '' }}
 
+  Build-LSPHP-Images:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # Same PHP matrix as cac-litespeed (81–85): cac-lsphp is the detached
+        # backend for the shared-ols tier and shares the litespeed prebuilt
+        # base, which only ships lsphp for 8.1+. Keep this matrix in lockstep
+        # with Build-LiteSpeed-Images.
+        phpver: [81, 82, 83, 84, 85]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Gitea
+        uses: docker/login-action@v3
+        with:
+          registry: repo.anhonesthost.net
+          username: ${{ secrets.CI_USER }}
+          password: ${{ secrets.CI_TOKEN }}
+
+      - name: Build and Push lsphp Image
+        uses: docker/build-push-action@v6
+        with:
+          file: ./Dockerfile.lsphp
+          platforms: linux/amd64
+          push: true
+          build-args: |
+            PHPVER=${{ matrix.phpver }}
+            OLS_VERSION=1.8.4
+          # OLS_VERSION pinned to 1.8.4 to match Build-LiteSpeed-Images — same
+          # prebuilt base, same lsphp binaries. Bump both together.
+          tags: |
+            repo.anhonesthost.net/cloud-hosting-platform/cac-lsphp:php${{ matrix.phpver }}
+            ${{ matrix.phpver == '85' && 'repo.anhonesthost.net/cloud-hosting-platform/cac-lsphp:latest' || '' }}
+
   Build-Shared-httpd:
     runs-on: ubuntu-latest
     steps: