* refactor(util): add BoundedTtlMap for core caches and log throttles
One size-capped, LRU-evicting map with an optional TTL and a once-per-window
shouldEmit helper. Replaces the hand-rolled maps in the DynamoDB throttle and
repair loggers (the repair one was unbounded), the Slack repeat throttle, the
auth probe's reauth log throttle, and the card-verification status memo.
* perf(http): skip route lifecycle work when nothing listens
The per-route lifecycle middleware built a payload, opened an
event.emitAndWait span and hooked finish/close on every request, listeners
or not. Each phase now checks hasListeners first. EventClient's three copies
of the key-prefix walk become one memoized #matchKeys.
* perf(ddb): write batch chunks concurrently and retry the TTL sweep
batchPut/batchDel sent their 25-item chunks one after another; they now run
up to four at a time through runWithConcurrencyLimit, and a failed chunk
stops the ones not yet started. batchGet and the batch write share one
#sendWithUnprocessedRetry instead of two copies of the backoff loop, and the
TTL sweep goes through #batchWrite, so the unprocessed deletes it used to
drop are retried. The AWS and local clients are built by one #bindClient.
* refactor(db): share migrations and tryHardRead in the base client
MySQL and Postgres each carried a copy of the migration-path runner and of
the replica-racing tryHardRead; both now live on AbstractDatabaseClient
(applyMigrationPaths, and tryHardRead gated on hasReadReplica), and SQLite
drops its own tryHardRead override. Removes MySQL reinitPrimary,
reinitReplica, isRetriableError and readWithRetry and the base requireRead,
which had no callers outside tests. SQLite prepared statements and the
Postgres SQL rewrite are memoized per query text in a bounded map.
* refactor(rate-limit): route every entry point through one charge()
The nine rate/peek/acquire entry points each repeated key and limit
resolution, the backend call and the fail-open catch. They now share
charge(), routeKey() and guardSlot(); log lines are unchanged. Driver
concurrency slots release at most once like the other slot handles, and
checkRateLimit takes { failOpen: false } for limits that must hold when the
backend is down.
* refactor(util): add secretsEqual for constant-time secret comparison
One HMAC-then-timingSafeEqual helper, safe for inputs of any length, so
callers stop hand-rolling the length guard. File signature verification
uses it.
* refactor(fs): infer signed-file MIME types with mime-types
mimeFromName looks extensions up in mime-types instead of a 35-entry inline
table, keeping the two types the table reported differently (ico, wav). The
purpose-labelled signing key is derived once per secret instead of on every
signature, where signFile derived it twice.
* refactor(http): build route gates from one gate() helper
Each gate repeated a try/catch -> next(err) wrapper or a .then(next, next)
chain around an assertion. gate(check) does that once: a throw or rejection
goes to next(err), and a synchronous check still calls next synchronously.
The credits, subscription and reputation gate files held nothing but such a
wrapper; their factories move into gates.ts and the files go.
* perf(hosting): build the puter-site hosting config once
createPuterSiteMiddleware rebuilt the normalized hosting-domain config on
every hosted-site request; it is derived from static config, like the domain
lists the middleware already builds at construction.
* fix(db): tryHardRead's replica leg doesn't fail over to the primary
MySQL's read() retries on the primary after a load-shed or transient
replica error, so routing tryHardRead through it read the primary twice
on that path. The replica leg now reads the replica alone.
* fix(ddb): settle in-flight batch chunks before rethrowing
A failed chunk stopped unstarted chunks but rejected while others were
still retrying, so writes could land after the caller had handled the
error and invalidated its cache.
* feat(email): inline cid attachments and Puter mailbox delivery for sendTransactional
EmailAttachment gains cid/contentDisposition so the transactional driver can send inline images. The SDK's EmailAttachment typedef now comes from types.js, which already carried cid. Docs describe delivery to <username>@puter.email recipients and the not_found code.
* feat: share with anyone with the link (PUT-1580); gate sharing on a verified phone or card
Daniel Salazar