fix: docs placement

apps/api/src/routes/pings.ts

@@ -72,8 +72,10 @@ export const ingest = new Elysia()
     const scheduledAt = body.scheduled_at ? new Date(body.scheduled_at) : null;
     const jitterMs = body.jitter_ms ?? null;
 
-    // Per-region transition state. Empty string = unspecified/single-region.
-    const region = body.region ?? '';
+    // Per-region transition state. Region is always populated by current runners;
+    // legacy null values from older pings collapse to "default" so state and
+    // notifications never carry an empty label.
+    const region = body.region && body.region.length > 0 ? body.region : 'default';
     const [stateRow] = await sql`
       SELECT last_state, consecutive_down, cert_alert_sent
       FROM monitor_region_state
@@ -135,7 +137,7 @@ export const ingest = new Elysia()
         ${important},
         ${body.error ?? null},
         ${Object.keys(meta).length > 0 ? sql.json(meta) : null},
-        ${body.region ?? null},
+        ${region},
         ${body.run_id ?? null}
       )
       RETURNING *