milestone 30: overview as a dashboard, explicit health contract, period aggregations

admin/src/features/diagnostics/eventCopy.ts

@@ -111,14 +111,20 @@ export const EVENT_COPY: Record<DiagnosticCode, EventCopy> = {
 	},
 	"query_log.recreated": {
 		title: "Query log recreated",
-		impact: "The old log database was unreadable and was moved aside; the history it held is not in the new one.",
+		impact: "The old log database was moved aside — a release changed its schema, or the file could not be read — and the history it held is not in the new one.",
 		remediation: "Keep or delete the aside file named below. Nothing else is required — logging is running.",
 		link: SETTINGS,
 	},
+	/**
+	 * Legacy. Nothing emits this code any more: milestone 30 deleted the
+	 * upstream-minute history subsystem. Stored rows outlive it, and the list
+	 * endpoint passes their codes through verbatim, so the copy stays — a
+	 * retained episode must still read as prose rather than as a dotted string.
+	 */
 	"upstream_history.write": {
 		title: "Upstream history write failed",
-		impact: "Resolution is unaffected; the per-upstream success and failure aggregates lose the affected window.",
-		remediation: "Check free disk space and the configuration database's permissions.",
+		impact: "A recorded failure of a subsystem this version no longer runs. Resolution was unaffected; the per-upstream aggregates it fed are gone.",
+		remediation: "Nothing to do. Purge the entry once you have read it.",
 		link: UPSTREAMS,
 	},
 	"upstream.exchange": {