feat(reactions): add spanKind to reaction.toggle/gossip spans (Phase 521)

Tag reaction.toggle and reaction.gossip start/end with spanKind for
diagnostics filtering and agentctl correlation.

Co-authored-by: Cursor <[email protected]>

README.md

@@ -63,6 +63,8 @@ Expose a single `EventEmitter` API the UI drives over IPC (`apps/pearcord/index.
 
 **v0.8.463 (Phase 500):** `message.send` `replyToId`; `message.edit` `deltaLength`; `message.delete` `hadReactions`/`reactionCount`. UI split messaging composer guild-loading compositor. Bundle: `npm run test:phase500-messaging`. See [MESSAGING.md](../../docs/MESSAGING.md).
 
+**v0.8.484 (Phase 521):** `reaction.toggle` and `reaction.gossip` spans include `spanKind` on start/end. UI extends reaction guild-loading compositor. Bundle: `npm run test:phase521-reactions`. See [REACTIONS.md](../../docs/REACTIONS.md).
+
 **v0.8.464 (Phase 501):** `reaction.toggle` `added`/`hadMeBefore`/`gossipSent`; `reaction.gossip` span on mesh fanout. UI `syncReactionPanelsDuringGuildLoading`. Bundle: `npm run test:phase501-reactions`. See [REACTIONS.md](../../docs/REACTIONS.md).
 
 **v0.8.465 (Phase 502):** `attachment.stage` `filenameLen`; `attachment.read` `attachmentId`/`isImage`; `embed.gossip` span; `embed.resolve` `gossipSent`. UI split attachment guild-loading compositor. Bundle: `npm run test:phase502-attachments`. See [ATTACHMENTS.md](../../docs/ATTACHMENTS.md), [EMBEDS.md](../../docs/EMBEDS.md).

index.js

@@ -12355,6 +12355,7 @@ class PearcordPlatform extends EventEmitter {
     const guildId = this.mode === 'dm' ? DM_GUILD_ID : this.guild?.guild?.id || null
     const channelId = this.activeChannelId
     const span = this.log.time('reaction.toggle', {
+      spanKind: 'reaction.toggle',
       messageId,
       emoji: String(emoji || '').slice(0, 16),
       guildId,
@@ -12377,6 +12378,7 @@ class PearcordPlatform extends EventEmitter {
       let gossipSent = false
       if (this.mode !== 'dm' && this.guild) {
         const gossipSpan = this.log.time('reaction.gossip', {
+          spanKind: 'reaction.gossip',
           messageId,
           guildId,
           channelId,
@@ -12384,9 +12386,11 @@ class PearcordPlatform extends EventEmitter {
         })
         this.guild.gossipReaction(result)
         gossipSpan.end({
+          spanKind: 'reaction.gossip',
           removed: result?.removed === true,
           guildId,
-          channelId
+          channelId,
+          emoji: emojiKey
         })
         gossipSent = true
       }
@@ -12396,6 +12400,7 @@ class PearcordPlatform extends EventEmitter {
         (r) => r.messageId === messageId && r.emoji === emojiKey
       ).length
       span.end({
+        spanKind: 'reaction.toggle',
         messageId,
         emoji: emojiKey,
         emojiLength: emojiKey.length,