feat(interfaces): add structured data models and discriminated check configs; migrate tooling and package metadata

ts/data/checkcollection.ts

@@ -1,13 +1,24 @@
-import * as plugins from '../ul-interfaces.plugins.js';
-import * as search from './search.js';
-
-import * as checks from './checks/index.js';
+import type * as checks from './checks/index.js';
 
+/**
+ * A collection of checks to run against a property/service.
+ *
+ * Two storage modes supported:
+ * 1. Legacy: Separate arrays for each check type (assumptionChecks, functionChecks, etc.)
+ * 2. Modern: Single unified array using discriminated union (checks)
+ */
 export interface ICheckCollection {
   id: string;
+  name?: string;
+  description?: string;
   intervalMs: number;
-  assumptionChecks?: Array<checks.IAssumptionCheck>;
-  functionChecks: Array<checks.IFunctionCheck>;
-  pwaChecks?: Array<checks.IPwaCheck>;
-  pageRankChecks: Array<checks.IPageRankCheck>;
+
+  // Modern: Single array with discriminated union
+  checks?: checks.TCheckConfig[];
+
+  // Legacy: Separate arrays by type (for backward compatibility)
+  assumptionChecks?: checks.IAssumptionCheck[];
+  functionChecks?: checks.IFunctionCheck[];
+  pwaChecks?: checks.IPwaCheck[];
+  pageRankChecks?: checks.IPageRankCheck[];
 }