refactor: phase 2 structural alignment — reports, importer, nodecli, pagination

Co-authored-by: Cursor <[email protected]>

internal/store/paginate.go

@@ -0,0 +1,29 @@
+package store
+
+import "strconv"
+
+// PaginateOffset returns a page from a pre-sorted slice using numeric string cursors (same scheme as ListRevisions).
+func PaginateOffset[T any](all []T, cursor string, limit int) (page []T, nextCursor string, hasMore bool) {
+	if limit <= 0 {
+		limit = 50
+	}
+	off := 0
+	if cursor != "" {
+		if n, err := strconv.Atoi(cursor); err == nil && n >= 0 {
+			off = n
+		}
+	}
+	if off > len(all) {
+		off = len(all)
+	}
+	end := off + limit
+	if end > len(all) {
+		end = len(all)
+	}
+	page = all[off:end]
+	if end < len(all) {
+		nextCursor = strconv.Itoa(end)
+		hasMore = true
+	}
+	return page, nextCursor, hasMore
+}