fixup! diigo-cache: diigo counts pages from 0; migrate stored pages (schema v2)

Docs per the docs-files-api skill: a 1–2 line @file; what a declaration is or does in JSDoc on it, not in // comments or the file header.

Generated-by: Claude Opus 5.5

diigo-cache/tests/test-worker.ts

@@ -1,8 +1,4 @@
-/**
- * @file the tests' main module — their edge: the real worker (whose own
- * edge supplies the live clock), plus the private cache's logic on a fixed
- * clock (bound as CLOCKED_DO in wrangler.tests.jsonc).
- */
+/** @file the tests' main module: the real worker plus a fixed-clock cache. */
 import { DiigoCacheLogic } from "../src/cache.js";
 import type { CacheEnv } from "../src/cache.js";
 
@@ -13,7 +9,8 @@ export { default } from "../src/index.js";
  * never due in real time — tests run it with runDurableObjectAlarm */
 export const FIXED_NOW = Date.UTC(2099, 0, 1, 0, 0, 0);
 
-/** a fixed clock that records each sleep it is asked for */
+/** the private cache's logic on a fixed clock that records each sleep it
+ * is asked for (bound as CLOCKED_DO in wrangler.tests.jsonc) */
 export class FixedClockCache extends DiigoCacheLogic {
 	#sleeps: number[] = [];