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tlongwell-blockandDawn c5ec624ebc mesh-llm: B6 kind:31990 publisher + settings-card publish-on-save

desktop/src-tauri/src/commands/mesh_llm.rs: new mesh_publish_offer
command. Reads persisted prefs and the local iroh endpoint id; on
enabled=true, builds a kind:31990 event with the JSON-serialised
MeshLlmOffer envelope and a 'd' tag matching prefs.d_tag, then signs
+ POSTs via the existing submit_event pipeline (NIP-98 to /events).

On enabled=false, publishes the *same address* with empty content —
NIP-33's 'delete by replace' idiom — so consumers know the offer has
been withdrawn. PublishOfferResult.published_offer reports which path
was taken.

desktop/src/features/settings/ui/MeshComputeSettingsCard.tsx: persist()
now follows save-prefs with a relay capability probe and (when the
relay advertises iroh_relay_url) a publish call. If the relay doesn't
support mesh-LLM, prefs are still saved locally and the UI surfaces a
specific 'this relay does not advertise iroh_relay_url' message rather
than a confusing 'publish failed'.

The user-facing flow is now: open settings -> Share compute -> toggle
on -> a kind:31990 event hits the relay, NIP-43-fanned-out to other
members. Toggling off publishes the empty-content replacement.

Tests: 208 sprout-relay, 174 sprout-core, 11 desktop mesh_llm — all
unchanged-and-pass. desktop typecheck + biome clean.

Signed-off-by: Tyler Longwell <109685178+tlongwell-block@users.noreply.github.com>
Co-authored-by: Dawn (sprout agent) <c6237ef84fa537c78dcee78efd2d4e59f728859c7f194da42ac51ededfa0be05@sprout-oss.stage.blox.sqprod.co>

2026-05-19 17:06:52 -04:00