diigo-week: draft a potluck issue from a week of diigo bookmarks

An EmDash plugin (native, content:write only) with one admin page:
a diigo username and an ISO week. It reads diigo-cache's public page
(?in=<week>&by=created) as microformats, follows rel=next, and
creates a draft in issues shaped like seed/issues.json.

Transport is a DIIGO_CACHE service binding rather than ctx.http.fetch:
EmDash's SSRF guard refuses localhost, and the binding names one
worker. Logic lives in src/week.ts with the fetcher passed in; tests
read fixtures in diigo-cache's markup. The checklist's goal 2 now
names potluck; DiigoBridge waits.

Generated-by: Claude Opus 5.5

potluck/wrangler.jsonc

@@ -16,6 +16,9 @@
 			"bucket_name": "my-emdash-media",
 		},
 	],
+	// diigo-cache's public pages, for the diigo-week plugin (reads its
+	// microformats; in dev, diigo-cache's own `pnpm dev` serves it)
+	"services": [{ "binding": "DIIGO_CACHE", "service": "diigo-cache" }],
 	// Sandboxed plugins require Worker Loader, available on Workers paid plans. Uncomment to enable:
 	// "worker_loaders": [{ "binding": "LOADER" }],
 	// General maintenance cron trigger