FeedRepository no longer owns favicons, WebSub subscriber lists or the
monitoring counters singleton. Each concern gets its own repository
(IconRepository, WebSubSubscriptionRepository, CountersRepository),
sharing the key schema via feed-keys. KV key strings are unchanged;
counters increment policy stays in utils/stats.ts.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
Move the feed:/icon:/websub: key builders out of FeedRepository into a
pure feed-keys module so the wire format lives in one place, shared by
the repositories to come. Strings are byte-identical; behaviour unchanged.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
Centralise the KV key schema and all get/put access behind a FeedRepository
class under src/domain/. Every feed/email/list/icon/websub/counter key was
previously inlined across ~12 modules with two divergent storeEmail and
addFeedToList implementations; the dead src/utils/storage.ts write path is
removed and the email key convention unified on feed:<id>:<ts>.
Behaviour-preserving: existing tests pass unchanged in logic, plus a new
feed-repository.test.ts covering CRUD, key builders, list ops and counters.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
