feat(health-checks): enhance health check functionality and add new routes

- Introduced origin health check routes and integrated them into the application.
- Updated health check configuration to include success recovery thresholds.
- Expanded error handling with new error codes for health check failures.
- Added new service routes for managing health checks, including creation and listing.
- Improved health check service logic to track consecutive successes and failures.

This commit enhances the health check capabilities, providing better monitoring and management of service health.

apps/api/src/config.ts

@@ -13,6 +13,7 @@ export interface AppConfig {
   healthCheckCron: string;
   healthDegradedFailures: number;
   healthDownFailures: number;
+  healthSuccessRecoveries: number;
   healthLatencyWarnMs: number;
   /** Min pause between probes to different physical targets (same IP is probed once). */
   healthProbeGapMs: number;
@@ -55,6 +56,8 @@ export function loadConfig(): AppConfig {
     healthDegradedFailures:
       Number(process.env.HEALTH_DEGRADED_FAILURES ?? "1") || 1,
     healthDownFailures: Number(process.env.HEALTH_DOWN_FAILURES ?? "2") || 2,
+    healthSuccessRecoveries:
+      Number(process.env.HEALTH_SUCCESS_RECOVERIES ?? "2") || 2,
     healthLatencyWarnMs:
       Number(process.env.HEALTH_LATENCY_WARN_MS ?? "1000") || 1000,
     healthProbeGapMs: Number(process.env.HEALTH_PROBE_GAP_MS ?? "2000") || 2000,