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nrobi144
e091f6d3d3
Three-layer resolver for "where do I publish this NIP-17 gift wrap":
1. LocalCache hit — if the caller already saw the user's kind:10050
via the regular feed pipeline, skip I/O entirely.
2. In-memory LRU cache — TTL 1h, 100 entries; avoids re-querying
indexers when opening several conversations in sequence.
3. Indexer fan-out — RecipientRelayFetcher against a curated set
(DefaultDmIndexerRelays: relay.nos.social, relay.damus.io,
nos.lol, relay.nostr.band, purplerelay.com — purplepag.es
deliberately excluded for poor kind:10050 coverage).
Strictness vs. the existing User.dmInboxRelays():
- filters to kind:10050 ONLY; NEVER falls back to NIP-65 read
marker (kind:10002). User.dmInboxRelays() silently substitutes
that, which is the same metadata-leak class fixed by 5293dae65.
- empty list = canonical "unreachable" signal; caller refuses to
publish (DesktopIAccount.resolveDmInboxRelaysStrict already
does this).
Security: the NostrClient passed in MUST be a dedicated
unauthenticated instance — no RelayAuthenticator attached. An
authenticated indexer fan-out (the current state with the primary
client) would extract identity-key signatures during the kind:10050
probe, escalating "indexer learns we want to DM pubkey X" into
"indexer learns user U wants to DM pubkey X". KDoc warning is
explicit; Phase 4 follow-up creates the unauth client in Main.kt
and injects it.
LocalLookup callback is plugged via lambda so CLI / headless
callers (amy) can use this without a Compose LocalCache.
Not yet wired into DesktopIAccount.resolveDmInboxRelaysStrict —
that wire-up is the next commit and converts the sync helper to
suspend, threading through sendNip17* batch construction.