fix(release): OpenAPI export readiness gate polls the served endpoint

The gate required /health to be healthy/degraded, but the throwaway CI config
yields an unhealthy server (no AWS creds), so it spun the full 30s and never
gated.  Poll /openapi.json instead — 200 as soon as uvicorn serves.

Author: fgogolli

dev-tools/release/export_openapi_spec.sh

@@ -35,8 +35,11 @@ orb "${CONFIG_FLAG[@]}" server start --foreground --api-only --socket-path "$SOC
 SERVER_PID=$!
 
 for _ in $(seq 1 30); do
-    if curl -sf --unix-socket "$SOCK" http://localhost/health \
-        | python3 -c "import sys,json; d=json.load(sys.stdin); sys.exit(0 if d.get('status') in ('healthy','degraded') else 1)" 2>/dev/null; then
+    # Poll the OpenAPI endpoint directly: it becomes available as soon as uvicorn
+    # is serving, regardless of provider health (AWS creds, etc.).  The old loop
+    # polled /health whose status depends on backend provider checks that always
+    # fail in CI (no credentials), so the loop never broke early.
+    if curl -sf --unix-socket "$SOCK" http://localhost/openapi.json >/dev/null 2>&1; then
         break
     fi
     sleep 1