fix: allow bounded candidate startup discovery

deploy/run-production-canary.sh

@@ -6,6 +6,7 @@ ENV_FILE="${ENV_FILE:-/home/m/assistant-deploy/production-compose.env}"
 COMPOSE_FILE="$BASE_DIR/deploy/docker-compose.prod.yml"
 SUPERVISOR_CONTROL_URL="${SUPERVISOR_CONTROL_URL:-http://127.0.0.1:${SUPERVISOR_CONTROL_PORT:-18085}}"
 REVISION="${1:?candidate revision is required}"
+HEALTH_ATTEMPTS="${HEALTH_ATTEMPTS:-360}"
 
 set -a
 . "$ENV_FILE"
@@ -51,7 +52,7 @@ compose --profile assistant-canary build --build-arg "SOURCE_REVISION=$REVISION"
 wait_healthy() {
   local container="$1" status="" ready=""
   ready=""
-  for attempt in $(seq 1 60); do
+  for attempt in $(seq 1 "$HEALTH_ATTEMPTS"); do
     status=$(docker inspect -f '{{if .State.Health}}{{.State.Health.Status}}{{else}}unknown{{end}}' "$container" 2>/dev/null || true)
     if [[ "$status" == healthy ]]; then ready=true; break; fi
     sleep 2

tests/deployment/stable-release-set-guard_test.sh

@@ -14,4 +14,6 @@ grep -Fq 'assert_stable_ids_unchanged' "$canary"
 grep -Fq 'before=$(stable_ids)' "$supervisor"
 grep -Fq 'after=$(stable_ids)' "$supervisor"
 grep -Fq 'stable container IDs changed' "$supervisor"
+grep -Fq 'HEALTH_ATTEMPTS="${HEALTH_ATTEMPTS:-360}"' "$canary"
+grep -Fq 'seq 1 "$HEALTH_ATTEMPTS"' "$canary"
 echo 'stable release-set guard: PASS'