alot more changes

internal/storage/store.go

@@ -135,4 +135,16 @@ type IssueTracesPage struct {
 type OccurrenceStore interface {
 	AppendOccurrence(ctx context.Context, occ Occurrence) error
 	IssueTraces(ctx context.Context, issueID string, opts IssueTracesOptions) (IssueTracesPage, error)
+	IssueSources(ctx context.Context, issueID string) ([]IssueSource, error)
+}
+
+// IssueSource is one source address observed for an issue across all persisted
+// occurrences. It is deliberately an aggregate: the issue detail already
+// has the recent occurrence samples, while this answers "which sources ever
+// produced this issue?" without returning every raw occurrence.
+type IssueSource struct {
+	IP        string    `json:"ip"`
+	FirstSeen time.Time `json:"firstSeen"`
+	LastSeen  time.Time `json:"lastSeen"`
+	Count     uint64    `json:"count"`
 }