Retarget deploy pipeline to POS and guard against cross-service clobber

The pipeline was copied from Ladill Mini and still deployed into
/var/www/ladill-mini, so the first POS push overwrote mini.ladill.com.
Retarget every mini reference to pos (app root, archive/workspace names,
concurrency group, nginx subdomain, supervisor worker), add a guard step
that fails the run unless basename(LADILL_APP_ROOT) matches the repo name,
and document the incident + a forking checklist in DEPLOY.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -1,4 +1,4 @@
-name: Deploy Ladill Mini
+name: Deploy Ladill POS
 
 on:
   push:
@@ -10,7 +10,7 @@ permissions:
   contents: read
 
 concurrency:
-  group: deploy-mini
+  group: deploy-pos
   cancel-in-progress: true
 
 jobs:
@@ -19,10 +19,27 @@ jobs:
     env:
       NODE_ROOT: /tmp/ladill-node-22-r1
       NODE_VERSION: "22.14.0"
-      RELEASE_ARCHIVE: /tmp/ladill-mini-release-${{ gitea.run_id }}-${{ gitea.run_attempt }}.tgz
-      WORKSPACE: /tmp/${{ gitea.repository_owner }}-mini-${{ gitea.run_id }}-${{ gitea.run_attempt }}
-      LADILL_APP_ROOT: /var/www/ladill-mini
+      RELEASE_ARCHIVE: /tmp/ladill-pos-release-${{ gitea.run_id }}-${{ gitea.run_attempt }}.tgz
+      WORKSPACE: /tmp/${{ gitea.repository_owner }}-pos-${{ gitea.run_id }}-${{ gitea.run_attempt }}
+      LADILL_APP_ROOT: /var/www/ladill-pos
     steps:
+      - name: Guard deploy target
+        # Refuse to deploy if this workflow was copied from another service
+        # without retargeting LADILL_APP_ROOT. The app dir basename MUST match
+        # the repo name (ladill-pos -> /var/www/ladill-pos), otherwise a copied
+        # pipeline would clobber a sibling service. See DEPLOY.md "Forking this pipeline".
+        shell: bash {0}
+        run: |
+          set -Eeuo pipefail
+          REPO_NAME="${{ gitea.repository }}"; REPO_NAME="${REPO_NAME##*/}"
+          APP_DIR_NAME="$(basename "$LADILL_APP_ROOT")"
+          if [ "$REPO_NAME" != "$APP_DIR_NAME" ]; then
+            echo "FATAL: repo '$REPO_NAME' != deploy target '$APP_DIR_NAME' (LADILL_APP_ROOT=$LADILL_APP_ROOT)." >&2
+            echo "Refusing to deploy — a mis-targeted workflow would overwrite another service. Retarget deploy.yml env." >&2
+            exit 1
+          fi
+          echo "Guard OK: $REPO_NAME -> $LADILL_APP_ROOT"
+
       - name: Checkout
         shell: bash {0}
         run: |
@@ -78,7 +95,7 @@ jobs:
       - name: Deploy release
         shell: bash {0}
         env:
-          LADILL_RELEASE_ARCHIVE: /tmp/ladill-mini-release-${{ gitea.run_id }}-${{ gitea.run_attempt }}.tgz
+          LADILL_RELEASE_ARCHIVE: /tmp/ladill-pos-release-${{ gitea.run_id }}-${{ gitea.run_attempt }}.tgz
         run: |
           set -Eeuo pipefail
           : "${LADILL_APP_ROOT:?Set LADILL_APP_ROOT}"
@@ -93,11 +110,11 @@ jobs:
             NGINX_SCRIPT="/var/www/ladill.com/current/deployment/setup-service-subdomain-nginx.sh"
           fi
           if [ ! -f "$NGINX_SCRIPT" ]; then
-            echo "WARN: setup-service-subdomain-nginx.sh not found — configure mini.ladill.com vhost manually"
+            echo "WARN: setup-service-subdomain-nginx.sh not found — configure pos.ladill.com vhost manually"
             exit 0
           fi
-          if sudo -n bash "$NGINX_SCRIPT" mini --app /var/www/ladill-mini/current; then
-            echo "nginx vhost updated for mini.ladill.com"
+          if sudo -n bash "$NGINX_SCRIPT" pos --app /var/www/ladill-pos/current; then
+            echo "nginx vhost updated for pos.ladill.com"
           else
             echo "WARN: nginx vhost step skipped (deploy user cannot sudo) — vhost must already be provisioned"
           fi

DEPLOY.md

@@ -12,7 +12,42 @@ Standalone **in-store register** at `pos.ladill.com`. Charges via Ladill Pay (`s
 
 ## Deploy
 
-Same release model as Mini/Merchant — see `deploy/deploy.sh`.
+Same release model as Mini/Merchant — see `deploy/deploy.sh`. Pushing to `main`
+triggers `.gitea/workflows/deploy.yml` on the host `deploy` runner, which builds a
+release and deploys into `/var/www/ladill-pos`.
+
+## ⚠️ Forking this pipeline (read before copying to a new service)
+
+This workflow was bootstrapped by copying Mini's. **If you copy `.gitea/workflows/deploy.yml`,
+`deploy/deploy.sh`, or `DEPLOY.md` to a new service, retarget EVERY `mini`/`pos` reference**,
+or the new repo's pipeline will deploy its code on top of the service you copied from.
+
+Things that must match the new service (search for the old slug and replace all):
+
+- `deploy.yml`: `name:`, `concurrency.group`, `RELEASE_ARCHIVE`, `WORKSPACE`,
+  `LADILL_APP_ROOT`, the nginx step subdomain (`pos --app /var/www/ladill-pos/current`)
+- `deploy.sh`: `APP_ROOT` default and the `supervisorctl restart <service>-worker:*` name
+
+A **guard step** in `deploy.yml` enforces `basename(LADILL_APP_ROOT) == <repo name>` and
+fails the run on a mismatch — keep repo name and app dir name identical (`ladill-pos` →
+`/var/www/ladill-pos`).
+
+> **Incident 2026-06-24:** the initial POS pipeline still pointed at `/var/www/ladill-mini`,
+> so the first POS push overwrote mini.ladill.com (POS code + a stray `create_pos_tables`
+> migration against the `ladill_mini` DB). Remediated by repointing mini's `current` symlink
+> to the last genuine Mini release and dropping the 4 stray `pos_*` tables. The guard step
+> above exists to make this impossible to repeat.
+
+## Server prerequisites (one-time, as root)
+
+Done for `pos.ladill.com`; replicate for any new service:
+
+1. MySQL: `CREATE DATABASE ladill_pos` + user `ladill_pos@127.0.0.1` (`ALL` on its own db;
+   `SELECT` on `ladill_merchant` + `ladilldb` for commerce links)
+2. `/var/www/ladill-pos/{releases,shared}` owned `deploy:www-data`
+3. `shared/.env` (mode 640, `deploy:www-data`) with generated `APP_KEY`, DB creds, and the
+   integration keys from the monolith (see "Platform wiring")
+4. nginx vhost via `deployment/setup-service-subdomain-nginx.sh pos --app /var/www/ladill-pos/current`
 
 ```bash
 php artisan migrate --force

deploy/deploy.sh

@@ -2,7 +2,7 @@
 # Fast on-host release deploy (same model as climpme/web/deploy/deploy.sh).
 set -Eeuo pipefail
 
-APP_ROOT="${LADILL_APP_ROOT:-/var/www/ladill-mini}"
+APP_ROOT="${LADILL_APP_ROOT:-/var/www/ladill-pos}"
 RELEASES_DIR="$APP_ROOT/releases"
 SHARED_DIR="$APP_ROOT/shared"
 CURRENT_LINK="$APP_ROOT/current"
@@ -236,7 +236,7 @@ if [ -L "$CURRENT_LINK" ] && [ -f "$CURRENT_LINK/artisan" ]; then
   (cd "$CURRENT_LINK" && php artisan queue:restart) || true
 fi
 if command -v supervisorctl >/dev/null 2>&1; then
-  supervisorctl restart ladill-mini-worker:* 2>/dev/null || true
+  supervisorctl restart ladill-pos-worker:* 2>/dev/null || true
 fi
 
 log "Cleaning old releases"