fix(obs): split SigNoz health and public routes

scripts/reboot-recovery/signoz-canonical-route-preflight.py

@@ -25,6 +25,7 @@ EXPECTED_BLOCKERS = [
     "api_runtime_cooldown_pending",
     "cd_probe_safety_fix_not_deployed",
     "backup_collector_restore_guard_not_deployed",
+    "signoz_control_plane_health_route_not_deployed",
     "wave_b_not_authorized",
 ]
 

scripts/reboot-recovery/tests/test_signoz_canonical_route_migration.py

@@ -69,6 +69,7 @@ def test_preflight_is_no_write_and_reports_explicit_partial_runtime() -> None:
     assert payload["active_route"] == "incumbent"
     assert payload["checks"] and all(payload["checks"].values())
     assert "organization_not_initialized" in payload["blockers"]
+    assert "signoz_control_plane_health_route_not_deployed" in payload["blockers"]
     assert "wave_b_not_authorized" in payload["blockers"]