fix(tenant): route runtime traffic to tenant databases

Wire Doctrine's default connection to the tenant database resolved from the subdomain for HTTP requests and tenant-scoped Messenger messages while keeping master-only services on the master connection.

This removes the production inconsistency where demo data, migrations and tenant commands used the tenant database but the web runtime still read from master.

deploy/vps/generate-demo-data.sh

@@ -21,6 +21,8 @@ Options:
   --zone ZONE              School zone: A, B or C. Default: B
   --period-type TYPE       Academic period type: trimester or semester.
                            Default: trimester
+  --target TARGET          Where to write demo data: master or tenant.
+                           Default: tenant
   --env-file PATH          Override env file path. Default: ${ENV_FILE}
   --compose-file PATH      Override compose file path. Default: ${COMPOSE_FILE}
   --service NAME           Override PHP service name. Default: ${PHP_SERVICE}
@@ -30,6 +32,7 @@ Examples:
   ./deploy/vps/generate-demo-data.sh
   ./deploy/vps/generate-demo-data.sh --password 'Demo2026!'
   ./deploy/vps/generate-demo-data.sh --tenant demo --school 'College de demo'
+  ./deploy/vps/generate-demo-data.sh --target master
 EOF
 }
 
@@ -70,6 +73,7 @@ PASSWORD="DemoPassword123!"
 SCHOOL=""
 ZONE="B"
 PERIOD_TYPE="trimester"
+TARGET="tenant"
 
 while [ "$#" -gt 0 ]; do
     case "$1" in
@@ -113,6 +117,14 @@ while [ "$#" -gt 0 ]; do
             PERIOD_TYPE="${1#*=}"
             shift
             ;;
+        --target)
+            TARGET="${2:-}"
+            shift 2
+            ;;
+        --target=*)
+            TARGET="${1#*=}"
+            shift
+            ;;
         --env-file)
             ENV_FILE="${2:-}"
             shift 2
@@ -172,6 +184,15 @@ if [ -z "${TENANT}" ]; then
     exit 1
 fi
 
+case "${TARGET}" in
+    master|tenant)
+        ;;
+    *)
+        echo "Invalid target: ${TARGET}. Expected 'master' or 'tenant'." >&2
+        exit 1
+        ;;
+esac
+
 if [ -z "${SCHOOL}" ] && [ -t 0 ]; then
     SCHOOL=$(prompt_with_default "School name (optional)" "")
 fi
@@ -188,6 +209,10 @@ COMMAND=(
     "--period-type=${PERIOD_TYPE}"
 )
 
+if [ "${TARGET}" = "master" ]; then
+    COMMAND+=("--internal-run")
+fi
+
 if [ -n "${SCHOOL}" ]; then
     COMMAND+=("--school=${SCHOOL}")
 fi
@@ -195,6 +220,7 @@ fi
 echo "Running demo data generator for tenant: ${TENANT}"
 echo "Compose file: ${COMPOSE_FILE}"
 echo "Env file: ${ENV_FILE}"
+echo "Target database: ${TARGET}"
 echo
 
 "${COMMAND[@]}"