Add backup and observability hardening

scripts/backup-db.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+timestamp="$(date -u +%Y%m%dT%H%M%SZ)"
+backup_dir="${BACKUP_DIR:-backups}"
+mkdir -p "$backup_dir"
+
+output_path="${backup_dir}/vortex-backup-${timestamp}.sql.gz"
+pg_dump "${DATABASE_URL:?DATABASE_URL must be set}" | gzip -9 > "$output_path"
+
+echo "wrote ${output_path}"

src/common/metrics.ts

@@ -78,6 +78,10 @@ export class Histogram {
 
 /** Singleton registry — import and use from any module. */
 export const MetricsRegistry = {
+  health: {
+    databaseChecksTotal: new Counter(),
+    sorobanRpcChecksTotal: new Counter(),
+  },
   sweeper: {
     /** Total number of intents expired across all sweeps. */
     expiredTotal: new Counter(),

src/tracing.ts

@@ -24,12 +24,18 @@ const sdk = new NodeSDK({
       "@opentelemetry/instrumentation-http": {
         enabled: true,
       },
+      "@opentelemetry/instrumentation-undici": {
+        enabled: true,
+      },
       "@opentelemetry/instrumentation-express": {
         enabled: true,
       },
       "@opentelemetry/instrumentation-nestjs-core": {
         enabled: true,
       },
+      "@opentelemetry/instrumentation-pg": {
+        enabled: true,
+      },
     }),
   ],
 });