Merge both Cloudflare modes into one Worker and one deploy button

Two entrypoints, two configs and two buttons was more surface than
the difference justified: the only thing that actually varied was
where a new address comes from. src/worker.ts now picks that at
runtime from whether DISPOSABLE_DOMAIN is set, so one Worker covers
both. Set it and mail arrives via Email Routing on your own domain;
clear it and addresses are provisioned on mail.tm and polled on the
frequent cron instead. Nothing else differs, so nothing else forks.

email() stays unconditional: handleInboundEmail only looks up
whoever the mail was addressed to, so it's already mode-agnostic,
and in mail.tm mode nothing routes mail to the Worker for it to
handle anyway.

wrangler.jsonc gains the poll cron alongside the daily cleanup. In
domain mode it returns on an env check before touching D1, so it
costs nothing on an existing domain-based deployment. Cleanup
branches too, since mail.tm's needs to delete the remote mailbox
before dropping the row and already runs deleteExpiredAndRevoked and
deleteStaleRateLimits itself.

Deletes src/receivers/mailtm/worker.ts, deploy/mailtm-workers/, and
wrangler-mailtm.jsonc.example along with the cf:mailtm:* scripts.

Verified: dry-run bundling in both modes, and a mode-switching test
covering address routing (unset, empty, and whitespace-only domain
all mean mail.tm) plus cron routing in both modes.

nccommitted 2 months agoparent 3c4d777680239b4af31a8cc5a87a73f2256549755dacaa8Browse files