perf(wa-sqlite): bypass queued materialization broadcasts - #163
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Summary
SharedWorker materialization notifications are one-way events, but they currently travel through the request/response RPC path. Every event therefore allocates a request ID and promise and occupies both the client and worker queues while writes are already active.
This PR sends those notifications as typed port messages instead. It removes
broadcastMaterializedfrom the RPC schema while preserving the existing event payload and cross-tab propagation behavior. Delivery remains best-effort when a port is closing or has failed.Scope
This is a performance and contention reduction. It does not change SQLite writes, materialization semantics, initialization, database drop, or reload handling.
Stack
Depends on #208. After merging this PR with a merge commit, retarget #209 to
main.