feat: index parsed JSON fields of profile/channel/app-handler events

Kinds 0 (profile), 40/41 (channel create/metadata) and 31990 (app handler)
store their data as JSON in content. Implement SearchableEvent on them by
parsing the JSON (via the existing UserMetadata/ChannelData/AppMetadata
accessors) and indexing only the meaningful fields — names, bio/about, and
the addresses people search by: nip05 email, lightning addresses
(lud06/lud16), and website/picture/banner URLs. This avoids indexing the
JSON keys and structural punctuation that raw-content indexing would add.

Updates the FsSearchTest "non-searchable" case to use an unknown kind, since
MetadataEvent is now searchable, and adds SearchTest coverage for profile
and channel JSON fields (name, about, email, lightning, URL).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RFdWREvyvixRXnmNXNzmmN

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/metadata/MetadataEvent.kt

@@ -48,6 +48,7 @@ import com.vitorpamplona.quartz.nip39ExtIdentities.githubClaim
 import com.vitorpamplona.quartz.nip39ExtIdentities.mastodonClaim
 import com.vitorpamplona.quartz.nip39ExtIdentities.replaceClaims
 import com.vitorpamplona.quartz.nip39ExtIdentities.twitterClaim
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.Log
 import com.vitorpamplona.quartz.utils.TimeUtils
 import com.vitorpamplona.quartz.utils.text
@@ -64,9 +65,29 @@ class MetadataEvent(
     tags: Array<Array<String>>,
     content: String,
     sig: HexKey,
-) : BaseReplaceableEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
+) : BaseReplaceableEvent(id, pubKey, createdAt, KIND, tags, content, sig),
+    SearchableEvent {
     override fun isContentEncoded() = true
 
+    // Profile content is JSON, so we parse it and index only the
+    // human-meaningful fields: names, bio, plus the addresses people search
+    // by (nip05 email, lightning addresses, website/picture/banner URLs).
+    // Mirrors the in-memory searchable set in UserMetadata.anyPropertyContains.
+    override fun indexableContent() =
+        contactMetaData()?.let {
+            listOfNotNull(
+                it.name,
+                it.displayName,
+                it.about,
+                it.nip05,
+                it.lud06,
+                it.lud16,
+                it.website,
+                it.picture,
+                it.banner,
+            ).joinToString(" ")
+        } ?: ""
+
     fun contactMetadataJson() =
         try {
             Json.parseToJsonElement(content) as JsonObject

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelCreateEvent.kt

@@ -32,6 +32,7 @@ import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
 import com.vitorpamplona.quartz.nip28PublicChat.base.ChannelData
 import com.vitorpamplona.quartz.nip28PublicChat.base.ChannelDataNorm
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.Log
 import com.vitorpamplona.quartz.utils.TimeUtils
 import kotlinx.coroutines.CancellationException
@@ -45,7 +46,10 @@ class ChannelCreateEvent(
     content: String,
     sig: HexKey,
 ) : Event(id, pubKey, createdAt, KIND, tags, content, sig),
-    EventHintProvider {
+    EventHintProvider,
+    SearchableEvent {
+    override fun indexableContent() = channelInfo().let { listOfNotNull(it.name, it.about, it.picture).joinToString(" ") }
+
     @kotlinx.serialization.Transient
     @kotlin.jvm.Transient
     var cache: ChannelDataNorm? = null

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip28PublicChat/admin/ChannelMetadataEvent.kt

@@ -35,6 +35,7 @@ import com.vitorpamplona.quartz.nip28PublicChat.base.ChannelData
 import com.vitorpamplona.quartz.nip28PublicChat.base.ChannelDataNorm
 import com.vitorpamplona.quartz.nip28PublicChat.base.channel
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.utils.Log
 import com.vitorpamplona.quartz.utils.TimeUtils
 import kotlinx.coroutines.CancellationException
@@ -48,7 +49,10 @@ class ChannelMetadataEvent(
     content: String,
     sig: HexKey,
 ) : BasePublicChatEvent(id, pubKey, createdAt, KIND, tags, content, sig),
-    EventHintProvider {
+    EventHintProvider,
+    SearchableEvent {
+    override fun indexableContent() = channelInfo().let { listOfNotNull(it.name, it.about, it.picture).joinToString(" ") }
+
     @kotlinx.serialization.Transient
     @kotlin.jvm.Transient
     var cache: ChannelDataNorm? = null

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip89AppHandlers/definition/AppDefinitionEvent.kt

@@ -32,6 +32,7 @@ import com.vitorpamplona.quartz.nip01Core.tags.publishedAt.PublishedAtProvider
 import com.vitorpamplona.quartz.nip21UriScheme.toNostrUri
 import com.vitorpamplona.quartz.nip23LongContent.tags.PublishedAtTag
 import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.nip50Search.SearchableEvent
 import com.vitorpamplona.quartz.nip89AppHandlers.PlatformType
 import com.vitorpamplona.quartz.nip89AppHandlers.definition.tags.PlatformLinkTag
 import com.vitorpamplona.quartz.utils.Log
@@ -50,7 +51,27 @@ class AppDefinitionEvent(
     content: String,
     sig: HexKey,
 ) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig),
-    PublishedAtProvider {
+    PublishedAtProvider,
+    SearchableEvent {
+    // App-handler content is JSON; parse it and index the human-meaningful
+    // fields plus the addresses/URLs people search by.
+    override fun indexableContent() =
+        appMetaData()?.let {
+            listOfNotNull(
+                it.name,
+                it.username,
+                it.displayName,
+                it.about,
+                it.nip05,
+                it.lud06,
+                it.lud16,
+                it.website,
+                it.picture,
+                it.banner,
+                it.image,
+            ).joinToString(" ")
+        } ?: ""
+
     @kotlinx.serialization.Transient
     @kotlin.jvm.Transient
     private var cachedMetadata: AppMetadata? = null

quartz/src/commonTest/kotlin/com/vitorpamplona/quartz/nip01Core/store/sqlite/SearchTest.kt

@@ -26,6 +26,7 @@ import com.vitorpamplona.quartz.nip01Core.signers.NostrSignerSync
 import com.vitorpamplona.quartz.nip10Notes.TextNoteEvent
 import com.vitorpamplona.quartz.nip22Comments.CommentEvent
 import com.vitorpamplona.quartz.nip23LongContent.LongTextNoteEvent
+import com.vitorpamplona.quartz.nip28PublicChat.admin.ChannelCreateEvent
 import com.vitorpamplona.quartz.nip34Git.repository.GitRepositoryEvent
 import com.vitorpamplona.quartz.nip52Calendar.calendar.CalendarEvent
 import com.vitorpamplona.quartz.utils.TimeUtils
@@ -165,4 +166,48 @@ class SearchTest : BaseDBTest() {
             db.assertQuery(repo, Filter(search = "uniqdesc"))
             db.assertQuery(repo, Filter(kinds = listOf(GitRepositoryEvent.KIND), search = "uniqdesc"))
         }
+
+    @Test
+    fun testProfileJsonFieldsAreSearchable() =
+        forEachDB { db ->
+            // Kind-0 content is JSON; we parse it and index names, bio, and the
+            // addresses people search by (nip05 email, lightning address, URLs).
+            val p =
+                signer.sign(
+                    MetadataEvent.createNew(
+                        name = "uniqalice",
+                        about = "loves uniqbio and coffee",
+                        nip05 = "alice@uniqmail.example",
+                        lnAddress = "alice@uniqln.example",
+                        website = "https://uniqsite.example",
+                    ),
+                )
+            db.store.insertEvent(p)
+
+            db.assertQuery(p, Filter(search = "uniqalice")) // name
+            db.assertQuery(p, Filter(search = "uniqbio")) // about
+            db.assertQuery(p, Filter(search = "uniqmail")) // nip05 email
+            db.assertQuery(p, Filter(search = "uniqln")) // lightning address
+            db.assertQuery(p, Filter(search = "uniqsite")) // website URL
+            db.assertQuery(p, Filter(kinds = listOf(MetadataEvent.KIND), search = "uniqalice"))
+        }
+
+    @Test
+    fun testChannelJsonFieldsAreSearchable() =
+        forEachDB { db ->
+            val chan =
+                signer.sign(
+                    ChannelCreateEvent.build(
+                        name = "uniqchan",
+                        about = "a uniqtopic discussion",
+                        picture = "https://uniqpic.example/c.jpg",
+                        relays = null,
+                    ),
+                )
+            db.store.insertEvent(chan)
+
+            db.assertQuery(chan, Filter(search = "uniqchan")) // name
+            db.assertQuery(chan, Filter(search = "uniqtopic")) // about
+            db.assertQuery(chan, Filter(search = "uniqpic")) // picture URL
+        }
 }

quartz/src/jvmTest/kotlin/com/vitorpamplona/quartz/nip01Core/store/fs/FsSearchTest.kt

@@ -20,7 +20,7 @@
  */
 package com.vitorpamplona.quartz.nip01Core.store.fs
 
-import com.vitorpamplona.quartz.nip01Core.metadata.MetadataEvent
+import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip01Core.relay.filters.Filter
 import com.vitorpamplona.quartz.nip01Core.signers.NostrSignerSync
 import com.vitorpamplona.quartz.nip10Notes.TextNoteEvent
@@ -117,17 +117,18 @@ class FsSearchTest {
     @Test
     fun `non-searchable event does not produce fts entries`() =
         runBlocking {
-            val meta =
-                signer.sign<MetadataEvent>(
+            // An event whose kind has no SearchableEvent mapping must not be indexed.
+            val nonSearchable =
+                signer.sign<Event>(
                     createdAt = 1,
-                    kind = MetadataEvent.KIND,
+                    kind = 9999,
                     tags = emptyArray(),
-                    content = "{\"name\":\"vitor\"}",
+                    content = "this text must not be indexed",
                 )
-            store.insert(meta)
+            store.insert(nonSearchable)
 
             val ftsRoot = root.resolve("idx/fts")
-            assertEquals(0, ftsRoot.listDirectoryEntries().size, "MetadataEvent is not SearchableEvent")
+            assertEquals(0, ftsRoot.listDirectoryEntries().size, "unknown kind is not SearchableEvent")
         }
 
     @Test