FUll implementation plan (first draft)

docs/events/scheduler.rescan.delta@1.json

@@ -0,0 +1,33 @@
+{
+  "$id": "https://stella-ops.org/schemas/events/scheduler.rescan.delta@1.json",
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "type": "object",
+  "required": ["eventId", "kind", "tenant", "ts", "payload"],
+  "properties": {
+    "eventId": {"type": "string", "format": "uuid"},
+    "kind": {"const": "scheduler.rescan.delta"},
+    "tenant": {"type": "string"},
+    "ts": {"type": "string", "format": "date-time"},
+    "payload": {
+      "type": "object",
+      "required": ["scheduleId", "impactedDigests", "summary"],
+      "properties": {
+        "scheduleId": {"type": "string"},
+        "impactedDigests": {
+          "type": "array",
+          "items": {"type": "string"}
+        },
+        "summary": {
+          "type": "object",
+          "properties": {
+            "newCritical": {"type": "integer", "minimum": 0},
+            "newHigh": {"type": "integer", "minimum": 0},
+            "total": {"type": "integer", "minimum": 0}
+          }
+        }
+      },
+      "additionalProperties": true
+    }
+  },
+  "additionalProperties": false
+}