feat: optimistic status update for instant feedback

Add setUserStatus() to EventRepository for direct cache updates.
Call it in publishUserStatus() before the relay round-trip so the
status change appears immediately in the drawer and on posts.

app/src/main/kotlin/com/wisp/app/repo/EventRepository.kt

@@ -50,6 +50,13 @@ class EventRepository(val profileRepo: ProfileRepository? = null, val muteRepo:
 
     fun getUserStatus(pubkey: String): String? = userStatusCache[pubkey]
 
+    /** Optimistically update status in local cache before relay confirmation. */
+    fun setUserStatus(pubkey: String, status: String?) {
+        if (status.isNullOrBlank()) userStatusCache.remove(pubkey)
+        else userStatusCache[pubkey] = status
+        _statusVersion.value++
+    }
+
     /** NIP-38: process a kind 30315 user status event. Only caches "general" statuses. */
     private fun processUserStatus(event: NostrEvent) {
         val dTag = event.tags.firstOrNull { it.size >= 2 && it[0] == "d" }?.get(1)

app/src/main/kotlin/com/wisp/app/viewmodel/FeedViewModel.kt

@@ -515,6 +515,9 @@ class FeedViewModel(app: Application) : AndroidViewModel(app) {
     /** Publish a NIP-38 user status (kind 30315). Empty string clears the status. */
     fun publishUserStatus(status: String) {
         val s = signer ?: return
+        val pubkey = pubkeyHex ?: return
+        // Optimistic local update so UI feels instant
+        eventRepo.setUserStatus(pubkey, status.ifBlank { null })
         viewModelScope.launch {
             val tags = mutableListOf(listOf("d", "general"))
             val event = s.signEvent(kind = 30315, content = status, tags = tags)