diff --git a/app/src/main/java/com/m57/hermescontrol/data/model/Profile.kt b/app/src/main/java/com/m57/hermescontrol/data/model/Profile.kt
index f8721ec5..78019c63 100644
--- a/app/src/main/java/com/m57/hermescontrol/data/model/Profile.kt
+++ b/app/src/main/java/com/m57/hermescontrol/data/model/Profile.kt
@@ -1,9 +1,14 @@
 package com.m57.hermescontrol.data.model
+
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.decodeFromJsonElement
 
 @Serializable
 data class ProfilesResponse(
     val profiles: List<ProfileInfo>,
+    val bot_mode_protocol: Boolean? = null,
 )
 
 @Serializable
@@ -17,7 +22,111 @@ data class ProfileInfo(
     val skill_count: Int? = null,
     val gateway_running: Boolean? = null,
     val description: String? = null,
+    val display_name: String? = null,
     val description_auto: Boolean? = null,
+    val has_avatar: Boolean? = null,
+    val ui_meta: Map<String, JsonElement>? = null,
+    val ui_meta_revisions: Map<String, Int>? = null,
+    val canonical_session: CanonicalSessionInfo? = null,
+    val last_session: ProfileSessionSummary? = null,
+    val worker_session: ProfileWorkerSummary? = null,
+) {
+    fun botMeta(
+        json: Json =
+            Json {
+                ignoreUnknownKeys = true
+                isLenient = true
+            },
+    ): BotRosterMeta? {
+        val element = ui_meta?.get("hermes-bots") ?: return null
+        return try {
+            json.decodeFromJsonElement<BotRosterMeta>(element)
+        } catch (_: Exception) {
+            null
+        }
+    }
+
+    val effectiveTitle: String
+        get() =
+            botMeta()?.title?.takeIf { it.isNotBlank() }
+                ?: display_name?.takeIf { it.isNotBlank() }
+                ?: name
+
+    val effectiveDescription: String
+        get() =
+            botMeta()?.description?.takeIf { it.isNotBlank() }
+                ?: description
+                ?: ""
+
+    val isHidden: Boolean
+        get() = botMeta()?.hidden == true
+}
+
+@Serializable
+data class CanonicalSessionInfo(
+    val id: String,
+    val resolved_id: String? = null,
+    val root_title: String? = null,
+    val title: String? = null,
+    val preview: String? = null,
+    val started_at: Long? = null,
+    val last_active: Long? = null,
+    val message_count: Int? = null,
+)
+
+@Serializable
+data class ProfileSessionSummary(
+    val id: String,
+    val title: String? = null,
+    val preview: String? = null,
+    val started_at: Long? = null,
+    val last_active: Long? = null,
+    val message_count: Int? = null,
+)
+
+@Serializable
+data class ProfileWorkerSummary(
+    val id: String,
+    val source: String? = null,
+    val title: String? = null,
+    val last_active: Long? = null,
+)
+
+@Serializable
+data class BotRosterMeta(
+    val title: String? = null,
+    val description: String? = null,
+    val avatar: BotAvatarMeta? = null,
+    val hidden: Boolean? = null,
+    val groups: List<String>? = null,
+    val group: String? = null,
+    val created: Long? = null,
+)
+
+@Serializable
+data class BotAvatarMeta(
+    val shape: String? = null,
+    val color: String? = null,
+    val icon: String? = null,
+    val image_url: String? = null,
+)
+
+@Serializable
+data class GroupChatSyncSnapshot(
+    val version: Int? = null,
+    val updatedAt: Long? = null,
+    val rooms: Map<String, GroupChatRoomMeta>? = null,
+    val deleted: Map<String, Long>? = null,
+)
+
+@Serializable
+data class GroupChatRoomMeta(
+    val id: String,
+    val name: String? = null,
+    val members: List<String>? = null,
+    val picture: String? = null,
+    val updatedAt: Long? = null,
+    val createdAt: Long? = null,
 )
 
 @Serializable
diff --git a/app/src/test/java/com/m57/hermescontrol/data/model/ProfileSerializationTest.kt b/app/src/test/java/com/m57/hermescontrol/data/model/ProfileSerializationTest.kt
new file mode 100644
index 00000000..267590cb
--- /dev/null
+++ b/app/src/test/java/com/m57/hermescontrol/data/model/ProfileSerializationTest.kt
@@ -0,0 +1,160 @@
+package com.m57.hermescontrol.data.model
+
+import com.m57.hermescontrol.data.remote.OkHttpProvider
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class ProfileSerializationTest {
+    private val json = OkHttpProvider.json
+
+    @Test
+    fun testProfileInfoDeserializationWithBotMetadata() {
+        val jsonStr =
+            """
+            {
+                "name": "researcher",
+                "path": "/home/user/.hermes/profiles/researcher",
+                "is_default": false,
+                "model": "anthropic/claude-3-7-sonnet",
+                "provider": "anthropic",
+                "skill_count": 5,
+                "description": "Base description",
+                "display_name": "Researcher Agent",
+                "has_avatar": true,
+                "canonical_session": {
+                    "id": "sess-canon-123",
+                    "resolved_id": "sess-canon-tip",
+                    "root_title": "Bot Chat",
+                    "title": "Bot Chat",
+                    "preview": "Latest research report ready.",
+                    "started_at": 1700000000,
+                    "last_active": 1700005000,
+                    "message_count": 42
+                },
+                "worker_session": {
+                    "id": "worker-456",
+                    "source": "kanban",
+                    "title": "Background analysis",
+                    "last_active": 1700006000
+                },
+                "last_session": {
+                    "id": "last-789",
+                    "title": "Ad-hoc task",
+                    "preview": "Done!",
+                    "started_at": 1700001000,
+                    "last_active": 1700002000,
+                    "message_count": 10
+                },
+                "ui_meta": {
+                    "hermes-bots": {
+                        "title": "Dr. Researcher",
+                        "description": "Deep literature scout",
+                        "avatar": {
+                            "shape": "hexagon",
+                            "color": "#4A90E2",
+                            "icon": "science",
+                            "image_url": "https://example.com/avatar.png"
+                        },
+                        "hidden": false,
+                        "groups": ["science-team", "daily-sync"]
+                    }
+                }
+            }
+            """.trimIndent()
+
+        val profile = json.decodeFromString<ProfileInfo>(jsonStr)
+        assertEquals("researcher", profile.name)
+        assertEquals("Researcher Agent", profile.display_name)
+        assertTrue(profile.has_avatar == true)
+
+        // Canonical session
+        val canon = profile.canonical_session
+        assertNotNull(canon)
+        assertEquals("sess-canon-123", canon?.id)
+        assertEquals("sess-canon-tip", canon?.resolved_id)
+        assertEquals("Latest research report ready.", canon?.preview)
+        assertEquals(42, canon?.message_count)
+
+        // Worker session
+        val worker = profile.worker_session
+        assertNotNull(worker)
+        assertEquals("worker-456", worker?.id)
+        assertEquals("kanban", worker?.source)
+
+        // Bot metadata decoding
+        val botMeta = profile.botMeta(json)
+        assertNotNull(botMeta)
+        assertEquals("Dr. Researcher", botMeta?.title)
+        assertEquals("Deep literature scout", botMeta?.description)
+        assertEquals("hexagon", botMeta?.avatar?.shape)
+        assertEquals("#4A90E2", botMeta?.avatar?.color)
+        assertEquals(listOf("science-team", "daily-sync"), botMeta?.groups)
+
+        // Helpers
+        assertEquals("Dr. Researcher", profile.effectiveTitle)
+        assertEquals("Deep literature scout", profile.effectiveDescription)
+        assertFalse(profile.isHidden)
+    }
+
+    @Test
+    fun testProfileInfoBackwardCompatibility() {
+        val legacyJson =
+            """
+            {
+                "name": "default",
+                "is_default": true,
+                "model": "openai/gpt-4o",
+                "provider": "openai",
+                "description": "Default Assistant"
+            }
+            """.trimIndent()
+
+        val profile = json.decodeFromString<ProfileInfo>(legacyJson)
+        assertEquals("default", profile.name)
+        assertTrue(profile.is_default == true)
+        assertNull(profile.canonical_session)
+        assertNull(profile.worker_session)
+        assertNull(profile.last_session)
+        assertNull(profile.ui_meta)
+        assertNull(profile.botMeta(json))
+        assertEquals("default", profile.effectiveTitle)
+        assertEquals("Default Assistant", profile.effectiveDescription)
+        assertFalse(profile.isHidden)
+    }
+
+    @Test
+    fun testGroupChatSyncSnapshotSerialization() {
+        val snapshot =
+            GroupChatSyncSnapshot(
+                version = 3,
+                updatedAt = 1724000000L,
+                rooms =
+                    mapOf(
+                        "room-1" to
+                            GroupChatRoomMeta(
+                                id = "room-1",
+                                name = "War Room",
+                                members = listOf("default", "researcher"),
+                                picture = null,
+                                updatedAt = 1724000000L,
+                                createdAt = 1723000000L,
+                            ),
+                    ),
+                deleted = mapOf("old-room" to 1723500000L),
+            )
+
+        val encoded = json.encodeToString(snapshot)
+        val decoded = json.decodeFromString<GroupChatSyncSnapshot>(encoded)
+        assertEquals(3, decoded.version)
+        assertEquals(1, decoded.rooms?.size)
+        assertEquals("War Room", decoded.rooms?.get("room-1")?.name)
+        assertEquals(listOf("default", "researcher"), decoded.rooms?.get("room-1")?.members)
+        assertEquals(1723500000L, decoded.deleted?.get("old-room"))
+    }
+}