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amethyst/commons
Claude 8f38d4a0b9 docs(commons): correct what blocks the event cache from commonMain
The earlier note said the NIP-95 `java.io.File` spill was the only thing
keeping the cache out of `commonMain`. That was wrong. The binding blocker is
that the cache's own storage — `LargeSoftCache`, holding `users`, `notes` and
`addressables` — is itself `jvmAndroid`, as are both `*ListMatchingFilter`
observables, `MintDirectoryIndex` and `NwcPaymentTracker`. `EventCache` cannot
go without them.

The audit also found most of it is already answered in the tree:
`commons.util.WeakReference` is an expect/actual that already anticipates iOS,
quartz's commonMain ships `ConcurrentMap`/`ConcurrentSet`/`LargeCache`, and
`LargeSoftCache`'s skip-list ordering is not load-bearing — its surface has no
ordered read, so the skip list is there for concurrency alone.

That leaves two pieces of real work: an okio or `expect` blob sink, and
getting `java.util.SortedSet` out of `EventCache.filter`'s signature, which
has no common equivalent and ripples into `CacheSearch`, both observables and
the parity test.

Recorded with a bottom-up order, and noted that none of it is on part B's
critical path — Desktop is JVM.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkULS5SVq4GHDdoCzajKi8
2026-09-21 02:23:40 +00:00
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