feat(platform): notification/inbox spans Phase 444 (v0.8.407)

Add markNotificationRead wrapper with notification.markRead span and
error logging. Use inbox.mark-read span for non-thread markChannelRead.
Extend notification.markAll span with guildId metadata.

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

README.md

@@ -147,6 +147,8 @@ Primary consumer: `apps/pearcord/index.js` sidecar reading pear-pipe JSON.
 
 **v0.8.403:** `stageAttachment`/`readAttachmentPreview` log `attachment.*` spans and errors; `_queueLinkEmbed` logs `embed.resolve` span and `embed.resolve error` on failure.
 
+**v0.8.407:** `markNotificationRead(notificationId)` wraps inbox `markRead` with `notification.markRead` span + `notification.markRead error`. `markAllNotificationsRead` span ends with `count` + `guildId`. `markChannelRead` logs `inbox.mark-read` span + error for non-thread channels (thread channels use `thread.read`). Smokes: `test:notification-platform-errors`, `test:inbox-platform-errors`. Bundle: `test:phase444-notifications-inbox`.
+
 **v0.8.406:** `createThread`/`createForumPost`/`markChannelRead` (thread channels)/`archiveThread` log `thread.create`/`forum.post`/`thread.read`/`thread.archive` spans and errors; audit entries for `thread.create`, `forum.post.create`, `thread.archive`, and `thread.unarchive`. Smoke: `test:thread-platform-errors`.
 
 **v0.8.401:** `createGuildCustomRole`/`updateGuildCustomRole`/`deleteGuildCustomRole`/`reorderGuildCustomRoles`/`setMemberCustomRoles` log `role.*` spans and errors; `upsertChannelPermissionOverwrite`/`deleteChannelPermissionOverwrite` log `permission.overwrite*` spans and errors.

index.js

@@ -3607,7 +3607,7 @@ class PearcordPlatform extends EventEmitter {
     const span = this.log.time('notification.markAll')
     try {
       const count = await this.notifications.markAllRead()
-      span.end({ count })
+      span.end({ count, guildId: this.guild?.guild?.id || null })
       return count
     } catch (err) {
       this.log.error('notification.markAll error', {
@@ -3618,6 +3618,28 @@ class PearcordPlatform extends EventEmitter {
     }
   }
 
+  async markNotificationRead (notificationId) {
+    if (!this.notifications) return null
+    const span = this.log.time('notification.markRead', {
+      notificationId: notificationId || null
+    })
+    try {
+      const row = await this.notifications.markRead(notificationId)
+      span.end({
+        channelId: row?.channelId || null,
+        guildId: row?.guildId || null
+      })
+      return row
+    } catch (err) {
+      this.log.error('notification.markRead error', {
+        notificationId: notificationId || null,
+        err: err?.message || String(err)
+      })
+      span.fail(err)
+      throw err
+    }
+  }
+
   async listAuditLog (limit = 50, opts = {}) {
     const guildId = this.guild?.guild?.id
     if (!guildId) return []
@@ -7287,7 +7309,7 @@ class PearcordPlatform extends EventEmitter {
     }
     const span = threadRead
       ? this.log.time('thread.read', { channelId, guildId })
-      : null
+      : this.log.time('inbox.mark-read', { channelId, guildId })
     try {
       const at = Date.now()
       await this.db.insert(COLLECTIONS.READ_STATE, {
@@ -7313,7 +7335,7 @@ class PearcordPlatform extends EventEmitter {
       if (this.notifications) {
         await this.notifications.clearForChannel(guildId, channelId)
       }
-      span?.end({ channelId })
+      span.end({ channelId })
     } catch (err) {
       if (threadRead) {
         this.log.error('thread.read error', {