feat(desktop): sync channel sections across devices via Nostr#792
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feat(desktop): sync channel sections across devices via Nostr#792wpfleger96 wants to merge 3 commits into
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Channel sections were localStorage-only, meaning they didn't sync across devices. Adds a NIP-78 (kind 30078) event-based sync layer so sections created, renamed, deleted, or reordered on any device propagate to all others. localStorage is retained as a local cache for instant rendering on startup.
Cancel stale debounce when applying remote updates to prevent publishing overwritten state. Track pending publishes for retry on reconnect. Add pubkey validation before decrypting relay events. Extract applyRemote reconcile helper and swapSectionOrder to eliminate duplication. Fix createSection to construct section before setStore so return value is deterministic. Add NIP-01 event ID tie-breaking. Wire resetSyncState into resetWorkspaceState.
Extract swapSectionOrder to channelSectionsHelpers.ts for testability. 27 tests covering parseChannelSectionPayload validation, stripOrphanedAssignments identity semantics, localStorage round-trip, and swapSectionOrder boundary conditions.
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Channel section changes sync across devices in realtime via Nostr 
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Stacked on #789 (must merge first). #789 adds the channel sections UI with localStorage persistence; this PR adds Nostr event sync so sections propagate across devices.
Summary
channelSectionsSync.tsmodule encapsulating all relay interaction: fetch, publish (debounced ~2s), live subscription, and NIP-44 encrypt/decrypt. Uses kind 30078 (NIP-78 app-specific data) withd-tag"channel-sections", same pattern asReadStateManageruseChannelSections.tsto fetch from relay on mount, reconcile with localStorage (remote wins if newer, local migrates to relay if no remote event exists), subscribe to live updates from other devices, re-fetch on reconnect, and publish after every mutationMath.max(now, lastSeenRemoteTimestamp + 1)) to handle clock skew, plus NIP-01 event ID tie-breaking for equal timestampsevent.pubkeybefore decrypting relay events, matchingReadStateManager's guardparseChannelSectionPayloadfromchannelSectionsStorage.ts(eliminates duplicated validation) andswapSectionOrderintochannelSectionsHelpers.tsresetSyncState()intoresetWorkspaceState()inuseWorkspaceInit.tsper the project's module-singleton reset conventionKIND_CHANNEL_SECTIONSconstant inkinds.tswith comment explaining shared kind 30078 value