refactor(amethyst): fall back to quartz KindNames for unknown kinds

The relay kind chips, NIP-86 management screen, and app-recommendation
labels all map kinds to translated R.string labels via kindDisplayName(),
returning -1 for kinds without a localized name. Route that -1 case
through the shared quartz KindNames registry so any kind known to the
protocol layer renders its canonical English label instead of a bare
"k<kind>"/empty placeholder. Translations still win where they exist;
quartz is the canonical source for the rest.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011SapGdtAc1j7woifoCZ9fY

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/apps/recommendations/ProfileAppRecommendationsScreen.kt

@@ -75,6 +75,7 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.relays.kindDisplayName
 import com.vitorpamplona.amethyst.ui.stringRes
 import com.vitorpamplona.amethyst.ui.theme.Size20Modifier
 import com.vitorpamplona.amethyst.ui.theme.placeholderText
+import com.vitorpamplona.quartz.kinds.KindNames
 import com.vitorpamplona.quartz.nip01Core.relay.filters.Filter
 import com.vitorpamplona.quartz.nip89AppHandlers.definition.AppDefinitionEvent
 import kotlinx.coroutines.Dispatchers
@@ -427,7 +428,7 @@ private fun supportedKindsLabel(kinds: List<Int>): String {
     val names =
         kinds.take(VISIBLE_KIND_NAMES).map { kind ->
             val nameRes = kindDisplayName(kind)
-            if (nameRes != -1) stringRes(nameRes) else "k$kind"
+            if (nameRes != -1) stringRes(nameRes) else (KindNames.nameFor(kind) ?: "k$kind")
         }
     val overflow = kinds.size - VISIBLE_KIND_NAMES
     val suffix = if (overflow > 0) " +$overflow" else ""

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/relays/RelayInformationScreen.kt

@@ -133,6 +133,7 @@ import com.vitorpamplona.quartz.experimental.nns.NNSEvent
 import com.vitorpamplona.quartz.experimental.notifications.wake.WakeUpEvent
 import com.vitorpamplona.quartz.experimental.profileGallery.ProfileGalleryEntryEvent
 import com.vitorpamplona.quartz.experimental.zapPolls.ZapPollEvent
+import com.vitorpamplona.quartz.kinds.KindNames
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.metadata.MetadataEvent
 import com.vitorpamplona.quartz.nip01Core.relay.client.stats.ErrorDebugMessage
@@ -694,7 +695,7 @@ val reports = setOf(ReportEvent.KIND, MuteListEvent.KIND, DeletionEvent.KIND, Re
 @Composable
 fun KindChip(kind: Int) {
     val nameResId = kindDisplayName(kind)
-    val name = if (nameResId != -1) stringResource(nameResId) else "k$kind"
+    val name = if (nameResId != -1) stringResource(nameResId) else (KindNames.nameFor(kind) ?: "k$kind")
     val (bg, fg) =
         when (kind) {
             in posts -> {

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/relays/nip86/RelayManagementScreen.kt

@@ -102,6 +102,7 @@ import com.vitorpamplona.amethyst.ui.theme.Size55dp
 import com.vitorpamplona.amethyst.ui.theme.SmallBorder
 import com.vitorpamplona.amethyst.ui.theme.StdHorzSpacer
 import com.vitorpamplona.amethyst.ui.theme.nip05
+import com.vitorpamplona.quartz.kinds.KindNames
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.displayUrl
@@ -897,7 +898,7 @@ private fun KindEntryCard(
             verticalAlignment = Alignment.CenterVertically,
         ) {
             val nameResId = kindDisplayName(kind)
-            val name = if (nameResId != -1) stringResource(nameResId) else ""
+            val name = if (nameResId != -1) stringResource(nameResId) else (KindNames.nameFor(kind) ?: "")
 
             Text(
                 "Kind $kind: $name",