diigo-cache: the public page is an h-feed of h-entry bookmarks

Microformats are the public page's API for other sites (potluck
first): each bookmark is an h-entry with u-bookmark-of, p-name,
p-summary, a p-category per tag (linked to a tag search),
dt-published (bookmarked) and dt-updated (last edited). Prev/next
links carry rel=prev/next, so a reader can follow a filter's pages.
Tests parse the page with microformats-parser to pin the contract.

Generated-by: Claude Opus 5.5

diigo-cache/package.json

@@ -11,6 +11,7 @@
 	"devDependencies": {
 		"@cloudflare/vitest-plugin": "1.3.6",
 		"@types/node": "^22",
+		"microformats-parser": "^2.0.6",
 		"typescript": "^5.9.0",
 		"vitest": "4.1.11",
 		"wrangler": "^4.148.0"