feat(ui-flow): IPC for explore baseline, onboarding Explore, async thread filter

Phase 142: format-discovery-baseline-link handler (existing).

Phase 143 (v0.8.108):
- mark-onboarding-explore-shown clears first-guild Explore prompt
- join-invite forwards explore deep-link results as deep-link-result
- await setThreadsPanelFilter for USER_PREFS persistence

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

index.js

@@ -44,8 +44,11 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     return true
   }
   if (t === 'join-invite') {
-    await platform.joinInvite(msg.code)
+    const result = await platform.joinInvite(msg.code)
     pushState()
+    if (result?.kind === 'explore') {
+      send({ type: 'deep-link-result', url: msg.code, ...result })
+    }
     return true
   }
   if (t === 'join-public-discovery') {
@@ -73,6 +76,11 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     pushState()
     return true
   }
+  if (t === 'mark-onboarding-explore-shown') {
+    await platform.markOnboardingExploreShown()
+    pushState()
+    return true
+  }
   if (t === 'set-discovery-tags') {
     await platform.setGuildDiscoveryTags(msg.guildId, msg.tags)
     pushState()
@@ -553,6 +561,11 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     send({ type: 'invite-deep-link', url, inviteCode: code })
     return true
   }
+  if (t === 'format-discovery-baseline-link') {
+    const url = platform.formatDiscoveryExploreBaselineDeepLink()
+    send({ type: 'discovery-baseline-deep-link', url })
+    return true
+  }
   if (t === 'format-guild-deep-link') {
     const url = platform.formatGuildDeepLink({
       guildId: msg.guildId,
@@ -664,7 +677,7 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     return true
   }
   if (t === 'set-threads-panel-filter') {
-    platform.setThreadsPanelFilter(msg.filter)
+    await platform.setThreadsPanelFilter(msg.filter)
     pushState()
     return true
   }