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

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

internal/httpapi/list_params.go

@@ -0,0 +1,24 @@
+package httpapi
+
+import (
+	"net/http"
+	"strconv"
+)
+
+func parseListLimit(r *http.Request) int {
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if limit <= 0 {
+		return 50
+	}
+	if limit > 500 {
+		return 500
+	}
+	return limit
+}
+
+func strPtrOrNull(s string) any {
+	if s == "" {
+		return nil
+	}
+	return s
+}