Phase 3: Wallet panel UI and full /pay flow wiring

- Add WalletPanelView with 4 tabs (Overview, Assets, History, Settings)
- Overview tab shows balance, QR code for receiving, and Send ADA button
- Assets tab shows native tokens held at address
- History tab shows recent transactions with explorer links
- Settings tab shows address, network, and backup/delete options

- Add NativeAsset and TxSummary models to wallet API
- Add getAddressAssets() and getAddressTransactions() to CardanoClient
- Implement new methods in KoiosCardanoClient and FakeCardanoClient

- Add wallet button to MessagesViewTopBar (DM rooms only)
- Add isDmRoom to MessagesState for conditional UI
- Wire navigateToWallet() callback through to MessagesFlowNode
- Add NavTarget.WalletPanel and WalletPanelNode integration

- Add string resources for wallet panel UI

Known limitations:
- Uses Chart icon as placeholder for wallet (Compound lacks wallet icon)
- Wallet setup flow not implemented (TODO)
- Transaction amounts in history need additional API calls to calculate

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesFlowNode.kt

@@ -53,6 +53,7 @@ import io.element.android.features.messages.impl.timeline.model.event.duration
 import io.element.android.features.poll.api.create.CreatePollEntryPoint
 import io.element.android.features.poll.api.create.CreatePollMode
 import io.element.android.features.wallet.api.WalletEntryPoint
+import io.element.android.features.wallet.impl.panel.WalletPanelNode
 import io.element.android.libraries.architecture.BackstackWithOverlayBox
 import io.element.android.libraries.architecture.BaseFlowNode
 import io.element.android.libraries.architecture.callback
@@ -182,6 +183,9 @@ class MessagesFlowNode(
         @Parcelize
         data class Thread(val threadRootId: ThreadId, val focusedEventId: EventId?) : NavTarget
 
+        @Parcelize
+        data object WalletPanel : NavTarget
+
         @Parcelize
         data class PaymentFlow(
             val roomId: RoomId,
@@ -304,6 +308,10 @@ class MessagesFlowNode(
                         backstack.push(NavTarget.Thread(threadRootId, focusedEventId))
                     }
 
+                    override fun navigateToWallet() {
+                        backstack.push(NavTarget.WalletPanel)
+                    }
+
                     override fun navigateToPaymentFlow(
                         roomId: RoomId,
                         recipientUserId: UserId?,
@@ -533,6 +541,23 @@ class MessagesFlowNode(
                 }
                 createNode<ThreadedMessagesNode>(buildContext, listOf(inputs, callback))
             }
+            is NavTarget.WalletPanel -> {
+                val walletPanelCallback = object : WalletPanelNode.Callback {
+                    override fun onClose() {
+                        backstack.pop()
+                    }
+
+                    override fun onSendAda() {
+                        backstack.pop()
+                        backstack.push(NavTarget.PaymentFlow(room.roomId, null, null, null))
+                    }
+
+                    override fun onSetupWallet() {
+                        // TODO: Navigate to wallet setup flow
+                    }
+                }
+                createNode<WalletPanelNode>(buildContext, listOf(walletPanelCallback))
+            }
             is NavTarget.PaymentFlow -> {
                 val walletCallback = object : WalletEntryPoint.Callback {
                     override fun onPaymentSent(txHash: String) {

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesNode.kt

@@ -130,6 +130,7 @@ class MessagesNode(
         fun navigateToRoomDetails()
         fun navigateToPinnedMessagesList()
         fun navigateToKnockRequestsList()
+        fun navigateToWallet()
         fun navigateToPaymentFlow(roomId: RoomId, recipientUserId: UserId?, recipientAddress: String?, amountLovelace: Long?)
     }
 
@@ -293,6 +294,7 @@ class MessagesNode(
                     callback.navigateToRoomCall(room.roomId, isAudioCall)
                 },
                 onViewAllPinnedMessagesClick = callback::navigateToPinnedMessagesList,
+                onWalletClick = callback::navigateToWallet,
                 modifier = modifier,
                 knockRequestsBannerView = {
                     knockRequestsBannerRenderer.View(

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesPresenter.kt

@@ -295,6 +295,7 @@ class MessagesPresenter(
             dmUserVerificationState = dmUserVerificationState,
             roomMemberModerationState = roomMemberModerationState,
             topBarSharedHistoryIcon = topBarSharedHistoryIcon,
+            isDmRoom = roomInfo.isDm,
             successorRoom = roomInfo.successorRoom,
             eventSink = ::handleEvent,
         )

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesState.kt

@@ -56,6 +56,7 @@ data class MessagesState(
     val roomMemberModerationState: RoomMemberModerationState,
     /** Type of "shared history" icon to show in the top bar. */
     val topBarSharedHistoryIcon: SharedHistoryIcon,
+    val isDmRoom: Boolean,
     val successorRoom: SuccessorRoom?,
     val eventSink: (MessagesEvent) -> Unit
 ) {

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesStateProvider.kt

@@ -121,6 +121,7 @@ fun aMessagesState(
     dmUserVerificationState: IdentityState? = null,
     roomMemberModerationState: RoomMemberModerationState = aRoomMemberModerationState(),
     topBarSharedHistoryIcon: SharedHistoryIcon = SharedHistoryIcon.NONE,
+    isDmRoom: Boolean = false,
     successorRoom: SuccessorRoom? = null,
     eventSink: (MessagesEvent) -> Unit = {},
 ) = MessagesState(
@@ -149,6 +150,7 @@ fun aMessagesState(
     dmUserVerificationState = dmUserVerificationState,
     roomMemberModerationState = roomMemberModerationState,
     topBarSharedHistoryIcon = topBarSharedHistoryIcon,
+    isDmRoom = isDmRoom,
     successorRoom = successorRoom,
     eventSink = eventSink,
 )

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesView.kt

@@ -131,6 +131,7 @@ fun MessagesView(
     onSendLocationClick: () -> Unit,
     onCreatePollClick: () -> Unit,
     onJoinCallClick: (isAudioCall: Boolean) -> Unit,
+    onWalletClick: () -> Unit,
     onViewAllPinnedMessagesClick: () -> Unit,
     modifier: Modifier = Modifier,
     forceJumpToBottomVisibility: Boolean = false,
@@ -226,9 +227,11 @@ fun MessagesView(
                             roomCallState = state.roomCallState,
                             dmUserIdentityState = state.dmUserVerificationState,
                             sharedHistoryIcon = state.topBarSharedHistoryIcon,
+                            isDmRoom = state.isDmRoom,
                             onBackClick = { hidingKeyboard { onBackClick() } },
                             onRoomDetailsClick = { hidingKeyboard { onRoomDetailsClick() } },
                             onJoinCallClick = onJoinCallClick,
+                            onWalletClick = onWalletClick,
                         )
                     }
                 },
@@ -268,6 +271,7 @@ fun MessagesView(
                             },
                             forceJumpToBottomVisibility = forceJumpToBottomVisibility,
                             onJoinCallClick = onJoinCallClick,
+                            onWalletClick = onWalletClick,
                             onViewAllPinnedMessagesClick = onViewAllPinnedMessagesClick,
                             knockRequestsBannerView = knockRequestsBannerView,
                         )
@@ -424,6 +428,7 @@ private fun MessagesViewContent(
     onSendLocationClick: () -> Unit,
     onCreatePollClick: () -> Unit,
     onJoinCallClick: (isAudioCall: Boolean) -> Unit,
+    onWalletClick: () -> Unit,
     onViewAllPinnedMessagesClick: () -> Unit,
     forceJumpToBottomVisibility: Boolean,
     onSwipeToReply: (TimelineItem.Event) -> Unit,
@@ -592,6 +597,7 @@ internal fun MessagesViewPreview(@PreviewParameter(MessagesStateProvider::class)
         onSendLocationClick = {},
         onCreatePollClick = {},
         onJoinCallClick = {},
+        onWalletClick = {},
         onViewAllPinnedMessagesClick = { },
         forceJumpToBottomVisibility = true,
         knockRequestsBannerView = {},
@@ -646,6 +652,7 @@ internal fun MessagesViewA11yPreview() = ElementPreview {
         onSendLocationClick = {},
         onCreatePollClick = {},
         onJoinCallClick = {},
+        onWalletClick = {},
         onViewAllPinnedMessagesClick = { },
         forceJumpToBottomVisibility = true,
         knockRequestsBannerView = {},

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/crypto/identity/MessagesViewWithIdentityChangePreview.kt

@@ -40,6 +40,7 @@ internal fun MessagesViewWithIdentityChangePreview(
         onSendLocationClick = {},
         onCreatePollClick = {},
         onJoinCallClick = {},
+        onWalletClick = {},
         onViewAllPinnedMessagesClick = {},
         knockRequestsBannerView = {}
     )

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/threads/ThreadedMessagesNode.kt

@@ -298,6 +298,7 @@ class ThreadedMessagesNode(
                     onJoinCallClick = { isAudioCall ->
                         callback.navigateToRoomCall(room.roomId, isAudioCall)
                     },
+                    onWalletClick = {},
                     onViewAllPinnedMessagesClick = {},
                     modifier = modifier,
                     knockRequestsBannerView = {},

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/topbars/MessagesViewTopBar.kt

@@ -45,6 +45,7 @@ import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.theme.components.HorizontalDivider
 import io.element.android.libraries.designsystem.theme.components.Icon
+import io.element.android.libraries.designsystem.theme.components.IconButton
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.components.TopAppBar
 import io.element.android.libraries.matrix.api.encryption.identity.IdentityState
@@ -65,8 +66,10 @@ internal fun MessagesViewTopBar(
     roomCallState: RoomCallState,
     dmUserIdentityState: IdentityState?,
     sharedHistoryIcon: SharedHistoryIcon,
+    isDmRoom: Boolean,
     onRoomDetailsClick: () -> Unit,
     onJoinCallClick: (isAudioCall: Boolean) -> Unit,
+    onWalletClick: () -> Unit,
     onBackClick: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
@@ -127,6 +130,15 @@ internal fun MessagesViewTopBar(
             }
         },
         actions = {
+            // Wallet button - only show in DM rooms
+            if (isDmRoom) {
+                IconButton(onClick = onWalletClick) {
+                    Icon(
+                        imageVector = CompoundIcons.Chart(),
+                        contentDescription = "Cardano Wallet",
+                    )
+                }
+            }
             CallMenuItem(
                 roomCallState = roomCallState,
                 onJoinCallClick = onJoinCallClick,
@@ -186,6 +198,7 @@ internal fun MessagesViewTopBarPreview() = ElementPreview {
         roomCallState: RoomCallState = RoomCallState.Unavailable,
         dmUserIdentityState: IdentityState? = null,
         sharedHistoryIcon: SharedHistoryIcon = SharedHistoryIcon.NONE,
+        isDmRoom: Boolean = false,
     ) = MessagesViewTopBar(
         roomName = roomName,
         roomAvatar = roomAvatar,
@@ -194,8 +207,10 @@ internal fun MessagesViewTopBarPreview() = ElementPreview {
         roomCallState = roomCallState,
         dmUserIdentityState = dmUserIdentityState,
         sharedHistoryIcon = sharedHistoryIcon,
+        isDmRoom = isDmRoom,
         onRoomDetailsClick = {},
         onJoinCallClick = {},
+        onWalletClick = {},
         onBackClick = {},
     )
     Column {
@@ -218,7 +233,8 @@ internal fun MessagesViewTopBarPreview() = ElementPreview {
                 url = "https://some-avatar.jpg"
             ),
             roomCallState = aStandByCallState(canStartCall = false),
-            dmUserIdentityState = IdentityState.Verified
+            dmUserIdentityState = IdentityState.Verified,
+            isDmRoom = true,
         )
         HorizontalDivider()
         AMessagesViewTopBar(