add chats: transfers grouped per person as a chat

Replaces Contacts in the default bottom nav slot with a Chats page
(Contacts moves to More and opens from the Chats toolbar).

- Chats start when the page is first opened; no old history is loaded
- Transfers come from BML notifications (instant), account history
  (booked later) and in-app receipts, merged into one bubble each
- Chats are keyed by the account holder's real name, looked up via
  BML account validation, so nickname contacts and their MVR/USD
  accounts share one chat; the To bar picks the account to send to
- Sending opens the Transfer page in a bottom sheet over the chat and
  returns to it on success; sent bubbles link to their receipt
- Chat and name data are stored encrypted with CacheEncryption

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FQUrmJjrypeoPsubpzuezC

app/src/main/java/sh/sar/basedbank/ui/home/ChatFragment.kt

@@ -0,0 +1,398 @@
+package sh.sar.basedbank.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.inputmethod.EditorInfo
+import android.widget.LinearLayout
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.google.android.material.color.MaterialColors
+import com.google.android.material.snackbar.Snackbar
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import sh.sar.basedbank.BasedBankApp
+import sh.sar.basedbank.R
+import sh.sar.basedbank.api.models.BankAccount
+import sh.sar.basedbank.databinding.FragmentChatBinding
+import sh.sar.basedbank.databinding.ItemAccountDropdownBinding
+import sh.sar.basedbank.databinding.ViewChatHeaderBinding
+import sh.sar.basedbank.util.ContactDisplay
+import sh.sar.basedbank.util.ContactImageCache
+import sh.sar.basedbank.util.ContactListParser
+import sh.sar.basedbank.util.ReceiptStore
+import sh.sar.basedbank.util.AccountListParser
+import sh.sar.basedbank.util.ChatAccount
+import sh.sar.basedbank.util.ChatStore
+import sh.sar.basedbank.util.ChatThread
+
+/**
+ * One person's transfers as a chat. A person can have several accounts (e.g. MVR and USD); the
+ * "To" bar picks which one to send to. Sending opens [TransferFragment] in a sheet, prefilled with
+ * the recipient, source account and amount, so the usual confirm/OTP flow still applies.
+ */
+class ChatFragment : Fragment(), ContactSheetHost {
+
+    private var _binding: FragmentChatBinding? = null
+    private val binding get() = _binding!!
+    private val viewModel: HomeViewModel by activityViewModels()
+    private val app get() = requireActivity().application as BasedBankApp
+
+    private var peerKey = ""
+    private var header: ViewChatHeaderBinding? = null
+    private val adapter = ChatMessagesAdapter { openReceipt(it.receiptKey) }
+    private var thread: ChatThread? = null
+    private var fromAccounts: List<BankAccount> = emptyList()
+    private var selectedFrom: BankAccount? = null
+    private var selectedTo: ChatAccount? = null
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        _binding = FragmentChatBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        peerKey = savedInstanceState?.getString(ARG_PEER_KEY) ?: requireArguments().getString(ARG_PEER_KEY).orEmpty()
+        binding.rvMessages.layoutManager = LinearLayoutManager(requireContext()).apply { stackFromEnd = true }
+        binding.rvMessages.adapter = adapter
+
+        adapter.setHideAmounts(viewModel.hideAmounts.value ?: false)
+        viewModel.hideAmounts.observe(viewLifecycleOwner) {
+            adapter.setHideAmounts(it)
+            selectedFrom?.let { acc -> bindAccountRow(binding.fromAccountRow, acc) }
+        }
+
+        viewModel.accounts.observe(viewLifecycleOwner) { accounts ->
+            fromAccounts = accounts.filter { it.bank == "BML" && it.profileType !in CARD_OR_LOAN }
+            bindFromAccounts()
+        }
+
+        binding.cardFromAccount.setOnClickListener { showAccountPicker() }
+        binding.btnSaveContact.setOnClickListener { openContact() }
+        binding.toAccountBar.setOnClickListener { showRecipientPicker() }
+        binding.btnSend.setOnClickListener { send() }
+        binding.etAmount.setOnEditorActionListener { _, actionId, _ ->
+            if (actionId == EditorInfo.IME_ACTION_SEND) { send(); true } else false
+        }
+
+        // Transfers started from this chat come straight back here instead of opening the receipt.
+        parentFragmentManager.setFragmentResultListener(TransferFragment.RESULT_TRANSFER_DONE, viewLifecycleOwner) { _, _ ->
+            onTransferDone()
+        }
+
+        // A newly saved contact adds an account (and maybe a nickname) to this chat; reload.
+        viewModel.contacts.observe(viewLifecycleOwner) { loadThread() }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putString(ARG_PEER_KEY, peerKey)
+    }
+
+    private fun loadThread() {
+        val ctx = requireContext().applicationContext
+        val contacts = viewModel.contacts.value ?: emptyList()
+        viewLifecycleOwner.lifecycleScope.launch {
+            val threads = withContext(Dispatchers.IO) { ChatStore.threads(ctx, contacts) }
+            val knownIds = thread?.messages?.mapTo(HashSet()) { it.id }.orEmpty()
+            val t = threads.firstOrNull { it.peerKey == peerKey }
+                ?: threads.firstOrNull { th -> th.messages.any { it.id in knownIds } }
+            if (_binding == null) return@launch
+            thread = t
+            if (t == null) return@launch
+            peerKey = t.peerKey
+            adapter.showDestination = t.accounts.size > 1
+            adapter.setMessages(t.messages, getString(R.string.chat_today), getString(R.string.chat_yesterday))
+            binding.rvMessages.scrollToPosition(adapter.itemCount - 1)
+            updateToolbar()
+
+            bindFromAccounts()
+            val previous = selectedTo
+            val to = t.accounts.firstOrNull { it.account == previous?.account }
+                ?: t.accounts.firstOrNull { it.account == t.peerAccount }
+            selectTo(to, matchFromCurrency = previous == null)
+        }
+    }
+
+    /** Picks which of the person's accounts to send to and updates everything that depends on it. */
+    private fun selectTo(to: ChatAccount?, matchFromCurrency: Boolean) {
+        val b = _binding ?: return
+        val t = thread ?: return
+        selectedTo = to
+
+        b.toAccountBar.visibility = if (to == null) View.GONE else View.VISIBLE
+        if (to != null) {
+            b.tvToAccount.text = to.account
+            b.tvToCurrency.text = to.currency
+            b.tvToCurrency.visibility = if (to.currency.isBlank()) View.GONE else View.VISIBLE
+            val nickname = to.contact?.benefNickName?.takeIf { it.isNotBlank() && !it.equals(t.peerName, ignoreCase = true) }
+            b.tvToNickname.text = nickname
+            b.tvToNickname.visibility = if (nickname == null) View.GONE else View.VISIBLE
+            b.ivToSwitch.visibility = if (t.accounts.size > 1) View.VISIBLE else View.GONE
+        }
+
+        // Offer to save the selected account (or the person, when no account is known yet).
+        b.saveContactBar.visibility = if (to?.contact == null) View.VISIBLE else View.GONE
+
+        val canSend = to != null
+        b.composer.visibility = if (canSend) View.VISIBLE else View.GONE
+        b.tvCannotSend.visibility = if (canSend) View.GONE else View.VISIBLE
+
+        // Sending to a USD account: default to a USD source account, and likewise for MVR.
+        if (matchFromCurrency && to != null && to.currency.isNotBlank() &&
+            !selectedFrom?.currencyName.equals(to.currency, ignoreCase = true)) {
+            fromAccounts.firstOrNull { it.currencyName.equals(to.currency, ignoreCase = true) }?.let(::selectFrom)
+        }
+    }
+
+    private fun showRecipientPicker() {
+        val t = thread ?: return
+        if (t.accounts.size < 2) return
+        val ctx = requireContext()
+        val dialog = BottomSheetDialog(ctx)
+        val list = LinearLayout(ctx).apply {
+            orientation = LinearLayout.VERTICAL
+            val pad = (8 * resources.displayMetrics.density).toInt()
+            setPadding(0, pad, 0, pad * 3)
+        }
+        list.addView(sheetTitle(getString(R.string.chat_pick_recipient_account)))
+        val selectedBg = MaterialColors.getColor(list, com.google.android.material.R.attr.colorSecondaryContainer)
+        for (account in t.accounts) {
+            val row = ItemAccountDropdownBinding.inflate(layoutInflater, list, false)
+            row.tvDropdownAccountName.text = account.contact?.benefNickName?.takeIf { it.isNotBlank() }
+                ?: getString(R.string.chat_not_in_contacts)
+            row.tvDropdownAccountNumber.text = account.account
+            row.tvDropdownBalance.text = account.currency
+            row.tvDropdownAccountType.visibility = View.GONE
+            row.ivDropdownCardLogo.visibility = View.GONE
+            if (account.account == selectedTo?.account) row.root.setBackgroundColor(selectedBg)
+            else row.root.setBackgroundResource(android.R.drawable.list_selector_background)
+            row.root.setOnClickListener {
+                selectTo(account, matchFromCurrency = true)
+                dialog.dismiss()
+            }
+            list.addView(row.root)
+        }
+        dialog.setContentView(list)
+        dialog.show()
+    }
+
+    private fun sheetTitle(text: String) = TextView(requireContext()).apply {
+        this.text = text
+        setTextAppearance(com.google.android.material.R.style.TextAppearance_Material3_TitleMedium)
+        val pad = (16 * resources.displayMetrics.density).toInt()
+        setPadding(pad, pad / 2, pad, pad / 2)
+    }
+
+    private fun bindFromAccounts() {
+        val b = _binding ?: return
+        if (fromAccounts.isEmpty()) return
+        // Default to the account last used with this person.
+        val lastUsed = thread?.messages?.lastOrNull { it.isSent }?.accountNumber
+        val current = selectedFrom?.takeIf { s -> fromAccounts.any { it.accountNumber == s.accountNumber } }
+        selectedFrom = current ?: fromAccounts.firstOrNull { it.accountNumber == lastUsed } ?: fromAccounts.first()
+
+        selectFrom(selectedFrom!!)
+    }
+
+    private fun onTransferDone() {
+        binding.etAmount.text = null
+        // The receipt shows the new bubble right away; history catches up a little later and
+        // replaces it with the bank's own entry.
+        sync()
+        viewLifecycleOwner.lifecycleScope.launch {
+            delay(HISTORY_CATCH_UP_MS)
+            sync()
+        }
+        Snackbar.make(binding.root, R.string.chat_transfer_sent, Snackbar.LENGTH_LONG)
+            .setAnchorView(binding.composer)
+            .setAction(R.string.chat_view_receipt) {
+                val latest = ReceiptStore.loadAll(requireContext()).firstOrNull() ?: return@setAction
+                openReceipt(latest.savedAt.toString())
+            }
+            .show()
+    }
+
+    private fun openReceipt(receiptKey: String) {
+        val entry = ReceiptStore.loadAll(requireContext()).firstOrNull { it.savedAt.toString() == receiptKey }
+        if (entry == null) {
+            Snackbar.make(binding.root, R.string.chat_receipt_missing, Snackbar.LENGTH_SHORT).show()
+            return
+        }
+        (requireActivity() as HomeActivity).showWithBackStack(TransferReceiptFragment.newInstance(entry.data, null))
+    }
+
+    private fun sync() {
+        val ctx = requireContext().applicationContext
+        val accounts = viewModel.accounts.value ?: emptyList()
+        val contacts = viewModel.contacts.value ?: emptyList()
+        viewLifecycleOwner.lifecycleScope.launch {
+            withContext(Dispatchers.IO) { ChatStore.sync(ctx, app, accounts, contacts) }
+            if (_binding != null) loadThread()
+        }
+    }
+
+    private fun selectFrom(account: BankAccount) {
+        val b = _binding ?: return
+        selectedFrom = account
+        bindAccountRow(b.fromAccountRow, account)
+        b.tilAmount.prefixText = account.currencyName
+    }
+
+    /** Fills an account row: name, full account number, balance (masked when amounts are hidden). */
+    private fun bindAccountRow(row: ItemAccountDropdownBinding, account: BankAccount) {
+        val display = AccountListParser.from(account)
+        row.tvDropdownAccountName.text = account.accountBriefName
+        row.tvDropdownAccountNumber.text = account.accountNumber
+        val balance = display?.balance.orEmpty()
+        val hide = viewModel.hideAmounts.value ?: false
+        row.tvDropdownBalance.text = if (hide && balance.isNotBlank()) AccountHistoryAdapter.maskAmount(balance) else balance
+        val type = display?.typeLabel.orEmpty()
+        row.tvDropdownAccountType.text = type
+        row.tvDropdownAccountType.visibility = if (type.isBlank()) View.GONE else View.VISIBLE
+        row.ivDropdownCardLogo.visibility = View.GONE
+    }
+
+    private fun showAccountPicker() {
+        if (fromAccounts.isEmpty()) return
+        val ctx = requireContext()
+        val dialog = BottomSheetDialog(ctx)
+        val list = LinearLayout(ctx).apply {
+            orientation = LinearLayout.VERTICAL
+            val pad = (8 * resources.displayMetrics.density).toInt()
+            setPadding(0, pad, 0, pad * 3)
+        }
+        list.addView(sheetTitle(getString(R.string.chat_pick_account)))
+        val selectedBg = MaterialColors.getColor(list, com.google.android.material.R.attr.colorSecondaryContainer)
+        for (account in fromAccounts) {
+            val row = ItemAccountDropdownBinding.inflate(layoutInflater, list, false)
+            bindAccountRow(row, account)
+            if (account.accountNumber == selectedFrom?.accountNumber) row.root.setBackgroundColor(selectedBg)
+            else row.root.setBackgroundResource(android.R.drawable.list_selector_background)
+            row.root.setOnClickListener {
+                selectFrom(account)
+                dialog.dismiss()
+            }
+            list.addView(row.root)
+        }
+        dialog.setContentView(list)
+        dialog.show()
+    }
+
+    private fun send() {
+        val t = thread ?: return
+        val from = selectedFrom ?: return
+        val to = selectedTo ?: return
+        val amount = binding.etAmount.text?.toString()?.trim()?.toDoubleOrNull()
+        if (amount == null || amount <= 0.0) {
+            binding.tilAmount.error = getString(R.string.chat_amount_invalid)
+            return
+        }
+        binding.tilAmount.error = null
+        val transfer = TransferFragment.newInstanceFromQr(
+            accountNumber     = to.account,
+            displayName       = to.contact?.benefNickName?.takeIf { it.isNotBlank() } ?: t.peerName,
+            amount            = "%.2f".format(amount),
+            remarks           = null,
+            fromAccountNumber = from.accountNumber,
+            returnOnSuccess   = true
+        )
+        if (childFragmentManager.findFragmentByTag("transfer_sheet") != null) return
+        TransferSheetFragment.newInstance(transfer.requireArguments()).show(childFragmentManager, "transfer_sheet")
+    }
+
+    /** Shows the photo, contact name and real name in the toolbar; tapping it opens the contact. */
+    private fun updateToolbar() {
+        val t = thread ?: return
+        val bar = (activity as? AppCompatActivity)?.supportActionBar ?: return
+        val h = header ?: ViewChatHeaderBinding.inflate(layoutInflater).also { h ->
+            header = h
+            h.root.setOnClickListener { openContact() }
+        }
+        h.tvHeaderName.text = t.peerName
+        // Show the real account-holder name when the chat is titled with a nickname.
+        val subtitle = t.realName.takeIf { !it.equals(t.peerName, ignoreCase = true) }.orEmpty()
+        h.tvHeaderAccount.text = subtitle
+        h.tvHeaderAccount.visibility = if (subtitle.isBlank()) View.GONE else View.VISIBLE
+        val sizePx = (40 * resources.displayMetrics.density).toInt()
+        val photo = t.contact?.customerImgHash?.let { ContactImageCache.load(requireContext(), it) }
+        h.ivHeaderAvatar.setImageBitmap(photo ?: contactInitialsBitmap(t.peerName, ChatsAdapter.avatarColor(t.peerKey), sizePx))
+
+        requireActivity().title = t.peerName
+        bar.setDisplayShowTitleEnabled(false)
+        bar.setDisplayShowCustomEnabled(true)
+        bar.customView = h.root
+    }
+
+    private fun openContact() {
+        val t = thread ?: return
+        val display = (selectedTo?.contact ?: t.contact)?.let { ContactListParser.from(it) }
+        if (display != null) {
+            if (childFragmentManager.findFragmentByTag("contact_details") != null) return
+            ContactDetailsSheetFragment.newInstance(display).show(childFragmentManager, "contact_details")
+        } else {
+            // Not a saved contact yet: offer to save them, prefilled with what we know.
+            if (childFragmentManager.findFragmentByTag("add_contact") != null) return
+            AddContactSheetFragment.newInstance(
+                bmlProfileId  = selectedFrom?.profileId?.takeIf { it.isNotBlank() },
+                accountNumber = selectedTo?.account,
+                recipientName = t.realName.ifBlank { t.peerName },
+                currency      = selectedTo?.currency?.takeIf { it.isNotBlank() } ?: selectedFrom?.currencyName
+            ).show(childFragmentManager, "add_contact")
+        }
+    }
+
+    override fun openTransfer(contact: ContactDisplay) {
+        val fragment = TransferFragment.newInstance(
+            accountNumber = contact.accountNumber,
+            displayName   = contact.name,
+            subtitle      = contact.transferSubtitle,
+            colorHex      = contact.bankColor,
+            imageHash     = contact.imageHash
+        )
+        (requireActivity() as HomeActivity).showWithBackStack(fragment)
+    }
+
+    /** Deleting lives on the Contacts page, which also keeps its caches in sync. */
+    override fun confirmDelete(contact: ContactDisplay) {
+        (requireActivity() as HomeActivity).showWithBackStack(ContactsFragment())
+    }
+
+    override fun onResume() {
+        super.onResume()
+        updateToolbar()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        (activity as? AppCompatActivity)?.supportActionBar?.apply {
+            setDisplayShowCustomEnabled(false)
+            setDisplayShowTitleEnabled(true)
+            customView = null
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        header = null
+        _binding = null
+    }
+
+    companion object {
+        private const val ARG_PEER_KEY = "peer_key"
+        private const val HISTORY_CATCH_UP_MS = 10_000L
+        private val CARD_OR_LOAN = setOf("BML_PREPAID", "BML_CREDIT", "BML_DEBIT", "BML_LOAN")
+
+        fun newInstance(peerKey: String) = ChatFragment().apply {
+            arguments = Bundle().apply { putString(ARG_PEER_KEY, peerKey) }
+        }
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/ChatMessagesAdapter.kt

@@ -0,0 +1,162 @@
+package sh.sar.basedbank.ui.home
+
+import android.content.res.Configuration
+import android.graphics.Color
+import android.graphics.drawable.GradientDrawable
+import android.text.format.DateUtils
+import android.view.Gravity
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.LinearLayout
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.color.MaterialColors
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import sh.sar.basedbank.R
+import sh.sar.basedbank.databinding.ItemChatBubbleBinding
+import sh.sar.basedbank.databinding.ItemChatDateBinding
+import sh.sar.basedbank.util.ChatMessage
+
+/** Transfers with one person as chat bubbles: sent on the right, received on the left. */
+class ChatMessagesAdapter(
+    private val onReceiptClick: (ChatMessage) -> Unit
+) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+    private sealed class Item {
+        data class DateChip(val label: String) : Item()
+        data class Bubble(val message: ChatMessage) : Item()
+    }
+
+    private val items = mutableListOf<Item>()
+    private var hideAmounts = false
+
+    /** When the person has several accounts, sent bubbles say which one the money went to. */
+    var showDestination = false
+
+    fun setHideAmounts(hide: Boolean) {
+        if (hideAmounts == hide) return
+        hideAmounts = hide
+        notifyDataSetChanged()
+    }
+
+    /** [messages] must be oldest first. */
+    fun setMessages(messages: List<ChatMessage>, todayLabel: String, yesterdayLabel: String) {
+        items.clear()
+        var lastDay = ""
+        for (m in messages) {
+            val day = m.date.take(10)
+            if (day != lastDay) {
+                val label = when {
+                    DateUtils.isToday(m.timeMillis) -> todayLabel
+                    DateUtils.isToday(m.timeMillis + DateUtils.DAY_IN_MILLIS) -> yesterdayLabel
+                    else -> AccountHistoryAdapter.formatDateHeader(m.date)
+                }
+                items.add(Item.DateChip(label))
+                lastDay = day
+            }
+            items.add(Item.Bubble(m))
+        }
+        notifyDataSetChanged()
+    }
+
+    override fun getItemCount() = items.size
+
+    override fun getItemViewType(position: Int) = when (items[position]) {
+        is Item.DateChip -> TYPE_DATE
+        is Item.Bubble -> TYPE_BUBBLE
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        return if (viewType == TYPE_DATE) DateVH(ItemChatDateBinding.inflate(inflater, parent, false))
+               else BubbleVH(ItemChatBubbleBinding.inflate(inflater, parent, false))
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        when (val item = items[position]) {
+            is Item.DateChip -> (holder as DateVH).b.tvDate.text = item.label
+            is Item.Bubble -> (holder as BubbleVH).bind(item.message)
+        }
+    }
+
+    class DateVH(val b: ItemChatDateBinding) : RecyclerView.ViewHolder(b.root)
+
+    inner class BubbleVH(private val b: ItemChatBubbleBinding) : RecyclerView.ViewHolder(b.root) {
+        fun bind(m: ChatMessage) {
+            val ctx = b.root.context
+            val sent = m.isSent
+
+            b.bubbleRow.gravity = if (sent) Gravity.END else Gravity.START
+            (b.cardBubble.layoutParams as LinearLayout.LayoutParams).gravity = if (sent) Gravity.END else Gravity.START
+            (b.tvMeta.layoutParams as LinearLayout.LayoutParams).gravity = if (sent) Gravity.END else Gravity.START
+
+            // Sent: tinted like the mockup. Received: neutral grey with an outline, so the two
+            // read apart even on a red-tinted theme.
+            val night = (ctx.resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) == Configuration.UI_MODE_NIGHT_YES
+            val bg = if (sent) MaterialColors.getColor(b.root, com.google.android.material.R.attr.colorErrorContainer)
+                     else Color.parseColor(if (night) "#2A2C2E" else "#F1F2F4")
+            val fg = if (sent) MaterialColors.getColor(b.root, com.google.android.material.R.attr.colorOnErrorContainer)
+                     else MaterialColors.getColor(b.root, com.google.android.material.R.attr.colorOnSurface)
+            b.cardBubble.setCardBackgroundColor(bg)
+            b.cardBubble.strokeWidth = if (sent) 0 else (1 * ctx.resources.displayMetrics.density).toInt()
+            b.cardBubble.strokeColor = MaterialColors.getColor(b.root, com.google.android.material.R.attr.colorOutlineVariant)
+            b.tvLabel.setTextColor(fg)
+            b.tvAmount.setTextColor(fg)
+            b.tvAccount.setTextColor(fg)
+            b.tvNote.setTextColor(fg)
+            b.btnReceipt.setColorFilter(fg)
+            b.btnReceipt.visibility = if (m.receiptKey.isNotBlank()) View.VISIBLE else View.GONE
+            b.btnReceipt.setOnClickListener { onReceiptClick(m) }
+
+            b.tvLabel.text = ctx.getString(if (sent) R.string.chat_sent_label else R.string.chat_received_label)
+            // Own account on its own line so long names aren't cut off by the receipt icon and tag.
+            b.tvAccount.text = when {
+                !sent -> ctx.getString(R.string.chat_into_label, m.accountDisplayName)
+                showDestination && m.peerAccount.isNotBlank() ->
+                    ctx.getString(R.string.chat_from_to_label, m.accountDisplayName, m.peerAccount)
+                else -> ctx.getString(R.string.chat_from_label, m.accountDisplayName)
+            }
+            b.tvAccount.visibility = if (m.accountDisplayName.isBlank()) View.GONE else View.VISIBLE
+            b.tvBadge.text = ctx.getString(if (sent) R.string.chat_debit else R.string.chat_credit)
+            // Debit uses the bubble's own text colour; Credit a green that stays readable in both themes.
+            val badgeFg = if (sent) fg else Color.parseColor(if (night) "#81C784" else "#2E7D32")
+            b.tvBadge.setTextColor(badgeFg)
+            b.tvBadge.background = GradientDrawable().apply {
+                cornerRadius = 10 * ctx.resources.displayMetrics.density
+                setColor(androidx.core.graphics.ColorUtils.setAlphaComponent(badgeFg, 0x2E))
+            }
+
+            b.tvAmount.text = if (hideAmounts) "${m.currency} ••••••"
+                              else "${m.currency} ${"%.2f".format(kotlin.math.abs(m.amount))}"
+            b.tvNote.text = m.note
+            b.tvNote.visibility = if (m.note.isBlank()) View.GONE else View.VISIBLE
+
+            val time = AccountHistoryAdapter.formatTime(m.date)
+            b.tvMeta.text = if (sent) ctx.getString(R.string.chat_sent_meta, time) else time
+
+            b.cardBubble.setOnClickListener { showDetail(m) }
+        }
+
+        private fun showDetail(m: ChatMessage) {
+            val ctx = b.root.context
+            val details = buildString {
+                val sign = if (m.isSent) "-" else "+"
+                append("Amount\n$sign ${m.currency} ${"%.2f".format(kotlin.math.abs(m.amount))}\n\n")
+                append("Date\n${AccountHistoryAdapter.formatFullDate(m.date)}\n\n")
+                if (m.note.isNotBlank()) append("Remarks\n${m.note}\n\n")
+                if (m.reference.isNotBlank()) append("Reference\n${m.reference}\n\n")
+                append("Account\n${m.accountDisplayName}")
+            }
+            MaterialAlertDialogBuilder(ctx)
+                .setTitle(m.peerName)
+                .setMessage(details)
+                .setPositiveButton("OK", null)
+                .show()
+        }
+    }
+
+    companion object {
+        private const val TYPE_DATE = 0
+        private const val TYPE_BUBBLE = 1
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/ChatsAdapter.kt

@@ -0,0 +1,93 @@
+package sh.sar.basedbank.ui.home
+
+import android.text.format.DateUtils
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import sh.sar.basedbank.R
+import sh.sar.basedbank.databinding.ItemChatBinding
+import sh.sar.basedbank.util.ChatThread
+import sh.sar.basedbank.util.ContactImageCache
+
+/** Telegram-style chat list: one row per person, latest transfer as the preview. */
+class ChatsAdapter(
+    private val onChatClick: (ChatThread) -> Unit
+) : RecyclerView.Adapter<ChatsAdapter.ViewHolder>() {
+
+    private var allThreads: List<ChatThread> = emptyList()
+    private var displayed: List<ChatThread> = emptyList()
+    private var searchQuery = ""
+    private var hideAmounts = false
+
+    fun updateThreads(threads: List<ChatThread>) {
+        allThreads = threads
+        applyFilter()
+    }
+
+    fun setSearch(query: String) {
+        searchQuery = query
+        applyFilter()
+    }
+
+    fun setHideAmounts(hide: Boolean) {
+        if (hideAmounts == hide) return
+        hideAmounts = hide
+        notifyDataSetChanged()
+    }
+
+    val isEmpty get() = displayed.isEmpty()
+
+    private fun applyFilter() {
+        displayed = if (searchQuery.isBlank()) allThreads else allThreads.filter {
+            it.peerName.contains(searchQuery, ignoreCase = true) ||
+                it.realName.contains(searchQuery, ignoreCase = true) ||
+                it.peerAccount.contains(searchQuery) ||
+                it.messages.any { m -> m.note.contains(searchQuery, ignoreCase = true) }
+        }
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val holder = ViewHolder(ItemChatBinding.inflate(LayoutInflater.from(parent.context), parent, false))
+        holder.binding.root.setOnClickListener {
+            val pos = holder.bindingAdapterPosition
+            if (pos != RecyclerView.NO_POSITION) onChatClick(displayed[pos])
+        }
+        return holder
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) = holder.bind(displayed[position])
+
+    override fun getItemCount() = displayed.size
+
+    inner class ViewHolder(val binding: ItemChatBinding) : RecyclerView.ViewHolder(binding.root) {
+        fun bind(thread: ChatThread) {
+            val ctx = binding.root.context
+            val last = thread.last
+            binding.tvName.text = thread.peerName
+
+            val amount = if (hideAmounts) "${last.currency} ••••••"
+                         else "${last.currency} ${"%.2f".format(kotlin.math.abs(last.amount))}"
+            binding.tvPreview.text = if (last.isSent) {
+                val note = last.note.takeIf { it.isNotBlank() }?.let { " · $it" }.orEmpty()
+                ctx.getString(R.string.chat_preview_sent, amount) + note
+            } else {
+                ctx.getString(R.string.chat_preview_received, amount)
+            }
+
+            binding.tvTime.text = if (DateUtils.isToday(last.timeMillis)) AccountHistoryAdapter.formatTime(last.date)
+                                  else AccountHistoryAdapter.formatDateOnly(last.date)
+
+            val sizePx = (52 * ctx.resources.displayMetrics.density).toInt()
+            val photo = thread.contact?.customerImgHash?.let { ContactImageCache.load(ctx, it) }
+            binding.ivAvatar.setImageBitmap(photo ?: contactInitialsBitmap(thread.peerName, avatarColor(thread.peerKey), sizePx))
+        }
+    }
+
+    companion object {
+        private val AVATAR_COLORS = listOf("#E8B04B", "#5C9CE6", "#E57373", "#66BB6A", "#9575CD", "#4DB6AC", "#F06292", "#FF8A65")
+
+        /** Stable per-person avatar colour, so a chat keeps its colour between visits. */
+        fun avatarColor(peerKey: String) = AVATAR_COLORS[(peerKey.hashCode() and 0x7fffffff) % AVATAR_COLORS.size]
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/ChatsFragment.kt

@@ -0,0 +1,138 @@
+package sh.sar.basedbank.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.MenuProvider
+import androidx.core.widget.addTextChangedListener
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.LinearLayoutManager
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import sh.sar.basedbank.BasedBankApp
+import sh.sar.basedbank.R
+import sh.sar.basedbank.databinding.FragmentChatsBinding
+import sh.sar.basedbank.util.ChatStore
+import java.text.DateFormat
+import java.util.Date
+
+/** Transfers grouped by person, shown as a chat list. Contacts is reachable from the toolbar. */
+class ChatsFragment : Fragment() {
+
+    private var _binding: FragmentChatsBinding? = null
+    private val binding get() = _binding!!
+    private val viewModel: HomeViewModel by activityViewModels()
+    private val app get() = requireActivity().application as BasedBankApp
+
+    private lateinit var adapter: ChatsAdapter
+    private var syncedThisView = false
+    private var syncedWithContacts = false
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        _binding = FragmentChatsBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        adapter = ChatsAdapter { thread ->
+            (requireActivity() as HomeActivity).showWithBackStack(ChatFragment.newInstance(thread.peerKey))
+        }
+        binding.rvChats.layoutManager = LinearLayoutManager(requireContext())
+        binding.rvChats.adapter = adapter
+
+        binding.etSearch.addTextChangedListener { text ->
+            adapter.setSearch(text?.toString() ?: "")
+            updateEmptyView()
+        }
+
+        binding.swipeRefresh.setOnRefreshListener { sync() }
+
+        requireActivity().addMenuProvider(object : MenuProvider {
+            override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
+                menu.add(Menu.NONE, R.id.action_open_contacts, 0, R.string.nav_contacts)
+                    .setIcon(R.drawable.ic_contacts)
+                    .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS)
+            }
+
+            override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
+                if (menuItem.itemId != R.id.action_open_contacts) return false
+                (requireActivity() as HomeActivity).showWithBackStack(ContactsFragment())
+                return true
+            }
+        }, viewLifecycleOwner, Lifecycle.State.RESUMED)
+
+        adapter.setHideAmounts(viewModel.hideAmounts.value ?: false)
+        viewModel.hideAmounts.observe(viewLifecycleOwner) { adapter.setHideAmounts(it) }
+
+        // Contacts give chats a saved name and an account number to send to.
+        (activity as? HomeActivity)?.loadAllContacts()
+        viewModel.contacts.observe(viewLifecycleOwner) { contacts ->
+            loadThreads()
+            // Contacts usually load after the first sync; sync again so their real names get looked up.
+            if (syncedThisView && !syncedWithContacts && contacts.isNotEmpty()) sync()
+        }
+
+        // Accounts arrive after login; sync once they are available.
+        viewModel.accounts.observe(viewLifecycleOwner) { accounts ->
+            if (!syncedThisView && accounts.any { it.bank == "BML" }) sync()
+        }
+
+        loadThreads()
+    }
+
+    private fun sync() {
+        syncedThisView = true
+        binding.swipeRefresh.isRefreshing = true
+        val accounts = viewModel.accounts.value ?: emptyList()
+        val contacts = viewModel.contacts.value ?: emptyList()
+        if (contacts.isNotEmpty()) syncedWithContacts = true
+        val ctx = requireContext().applicationContext
+        viewLifecycleOwner.lifecycleScope.launch {
+            withContext(Dispatchers.IO) { ChatStore.sync(ctx, app, accounts, contacts) }
+            _binding?.swipeRefresh?.isRefreshing = false
+            loadThreads()
+        }
+    }
+
+    private fun loadThreads() {
+        val ctx = requireContext().applicationContext
+        val contacts = viewModel.contacts.value ?: emptyList()
+        viewLifecycleOwner.lifecycleScope.launch {
+            val threads = withContext(Dispatchers.IO) { ChatStore.threads(ctx, contacts) }
+            if (_binding == null) return@launch
+            adapter.updateThreads(threads)
+            updateEmptyView()
+        }
+    }
+
+    private fun updateEmptyView() {
+        val b = _binding ?: return
+        b.emptyView.visibility = if (adapter.isEmpty) View.VISIBLE else View.GONE
+        if (!adapter.isEmpty) return
+        val since = ChatStore.sinceMillis(requireContext())
+        b.emptyView.text = when {
+            b.etSearch.text?.isNotBlank() == true -> getString(R.string.chats_no_results)
+            since > 0L -> getString(R.string.chats_empty_since,
+                DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT).format(Date(since)))
+            else -> getString(R.string.chats_empty)
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        requireActivity().title = getString(R.string.nav_chats)
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}

app/src/main/java/sh/sar/basedbank/ui/home/ContactDetailsSheetFragment.kt

@@ -24,14 +24,14 @@ import sh.sar.basedbank.util.ContactListParser
 import sh.sar.basedbank.util.CredentialStore
 import sh.sar.basedbank.util.TransferNetwork
 
-/** Contact details drawer shown when a row in [ContactsFragment] is tapped. */
+/** Contact details drawer shown when a contact is tapped in [ContactsFragment] or a chat header. */
 class ContactDetailsSheetFragment : BottomSheetDialogFragment() {
 
     private var _binding: SheetContactDetailsBinding? = null
     private val binding get() = _binding!!
     private val viewModel: HomeViewModel by activityViewModels()
 
-    private val contactsFragment get() = parentFragment as? ContactsFragment
+    private val contactsFragment get() = parentFragment as? ContactSheetHost
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
         _binding = SheetContactDetailsBinding.inflate(inflater, container, false)

app/src/main/java/sh/sar/basedbank/ui/home/ContactSheetHost.kt

@@ -0,0 +1,9 @@
+package sh.sar.basedbank.ui.home
+
+import sh.sar.basedbank.util.ContactDisplay
+
+/** A screen that can show [ContactDetailsSheetFragment] and handle its Transfer/Delete buttons. */
+interface ContactSheetHost {
+    fun openTransfer(contact: ContactDisplay)
+    fun confirmDelete(contact: ContactDisplay)
+}

app/src/main/java/sh/sar/basedbank/ui/home/ContactsFragment.kt

@@ -40,7 +40,7 @@ import sh.sar.basedbank.util.ContactManager
 import sh.sar.basedbank.util.ContactsCache
 import sh.sar.basedbank.util.TransferNetwork
 
-class ContactsFragment : Fragment() {
+class ContactsFragment : Fragment(), ContactSheetHost {
 
     private var _binding: FragmentContactsBinding? = null
     private val binding get() = _binding!!
@@ -182,7 +182,7 @@ class ContactsFragment : Fragment() {
         ContactDetailsSheetFragment.newInstance(contact).show(childFragmentManager, "contact_details")
     }
 
-    internal fun openTransfer(contact: ContactDisplay) {
+    override fun openTransfer(contact: ContactDisplay) {
         val fragment = TransferFragment.newInstance(
             accountNumber = contact.accountNumber,
             displayName   = contact.name,
@@ -193,7 +193,7 @@ class ContactsFragment : Fragment() {
         (requireActivity() as HomeActivity).showWithBackStack(fragment)
     }
 
-    internal fun confirmDelete(contact: ContactDisplay) {
+    override fun confirmDelete(contact: ContactDisplay) {
         val ctx = requireContext()
         val errorColor = MaterialColors.getColor(binding.root, com.google.android.material.R.attr.colorError)
         val icon = ContextCompat.getDrawable(ctx, R.drawable.ic_delete)?.mutate()?.apply { setTint(errorColor) }

app/src/main/java/sh/sar/basedbank/ui/home/HomeActivity.kt

@@ -176,6 +176,7 @@ class HomeActivity : AppCompatActivity() {
             val frag = when (item.itemId) {
                 R.id.nav_dashboard        -> DashboardFragment()
                 R.id.nav_accounts         -> AccountsFragment()
+                R.id.nav_chats            -> ChatsFragment()
                 R.id.nav_contacts         -> ContactsFragment()
                 R.id.nav_transfer         -> cachedTransferFragment ?: TransferFragment().also { cachedTransferFragment = it }
                 R.id.nav_pay_mv_qr        -> PayMvQrFragment()
@@ -473,6 +474,7 @@ fun applyNavLabelVisibility() {
         val dest = fragment ?: when (itemId) {
             R.id.nav_dashboard        -> DashboardFragment()
             R.id.nav_accounts         -> AccountsFragment()
+            R.id.nav_chats            -> ChatsFragment()
             R.id.nav_contacts         -> ContactsFragment()
             R.id.nav_transfer         -> cachedTransferFragment ?: TransferFragment().also { cachedTransferFragment = it }
             R.id.nav_pay_mv_qr        -> PayMvQrFragment()

app/src/main/java/sh/sar/basedbank/ui/home/NavCustomization.kt

@@ -32,6 +32,7 @@ object NavCustomization {
     /** All items that can occupy either a bottom nav slot or the "More" screen. */
     val ALL_SWAPPABLE = listOf(
         NavItemDef(R.id.nav_accounts,         "nav_accounts",         R.drawable.ic_nav_accounts,         R.string.nav_accounts,         R.string.nav_desc_accounts),
+        NavItemDef(R.id.nav_chats,            "nav_chats",            R.drawable.ic_chat,                 R.string.nav_chats,            R.string.nav_desc_chats),
         NavItemDef(R.id.nav_contacts,         "nav_contacts",         R.drawable.ic_contacts,             R.string.nav_contacts,         R.string.nav_desc_contacts),
         NavItemDef(R.id.nav_transfer,         "nav_transfer",         R.drawable.ic_send,                 R.string.transfer,             R.string.nav_desc_transfer),
         NavItemDef(R.id.nav_pay_mv_qr,        "nav_pay_mv_qr",        R.drawable.ic_qr_scan,              R.string.pay_mv_qr,            R.string.nav_desc_pay_mv_qr),
@@ -51,14 +52,14 @@ object NavCustomization {
 
     fun getSlots(prefs: SharedPreferences): List<Int> = listOf(
         keyToId(prefs.getString("bottom_nav_slot_1_key", null), R.id.nav_accounts),
-        keyToId(prefs.getString("bottom_nav_slot_2_key", null), R.id.nav_contacts),
+        keyToId(prefs.getString("bottom_nav_slot_2_key", null), R.id.nav_chats),
         keyToId(prefs.getString("bottom_nav_slot_3_key", null), R.id.nav_transfer),
     )
 
     fun saveSlots(prefs: SharedPreferences, slots: List<Int>) {
         prefs.edit()
             .putString("bottom_nav_slot_1_key", idToKey(slots[0]) ?: "nav_accounts")
-            .putString("bottom_nav_slot_2_key", idToKey(slots[1]) ?: "nav_contacts")
+            .putString("bottom_nav_slot_2_key", idToKey(slots[1]) ?: "nav_chats")
             .putString("bottom_nav_slot_3_key", idToKey(slots[2]) ?: "nav_transfer")
             .apply()
     }
@@ -79,7 +80,7 @@ object NavCustomization {
     fun getCircularSlots(prefs: SharedPreferences): List<Int> = listOf(
         keyToId(prefs.getString("circular_slot_1_key", null), R.id.nav_transfer),
         keyToId(prefs.getString("circular_slot_2_key", null), R.id.nav_pay_with_card),
-        keyToId(prefs.getString("circular_slot_3_key", null), R.id.nav_contacts),
+        keyToId(prefs.getString("circular_slot_3_key", null), R.id.nav_chats),
         keyToId(prefs.getString("circular_slot_4_key", null), R.id.nav_accounts),
     )
 
@@ -87,7 +88,7 @@ object NavCustomization {
         prefs.edit()
             .putString("circular_slot_1_key", idToKey(slots[0]) ?: "nav_transfer")
             .putString("circular_slot_2_key", idToKey(slots[1]) ?: "nav_pay_with_card")
-            .putString("circular_slot_3_key", idToKey(slots[2]) ?: "nav_contacts")
+            .putString("circular_slot_3_key", idToKey(slots[2]) ?: "nav_chats")
             .putString("circular_slot_4_key", idToKey(slots[3]) ?: "nav_accounts")
             .apply()
     }

app/src/main/java/sh/sar/basedbank/ui/home/TransferFragment.kt

@@ -115,7 +115,7 @@ class TransferFragment : Fragment() {
                 clearForm()
                 val activity = requireActivity() as HomeActivity
                 activity.triggerRefresh()
-                activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, avatar))
+                showReceipt(receipt, avatar)
             }
         ).also { bmlHandler = it }
 
@@ -155,7 +155,7 @@ class TransferFragment : Fragment() {
                 clearForm()
                 val activity = requireActivity() as HomeActivity
                 activity.triggerRefresh()
-                activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, avatar))
+                showReceipt(receipt, avatar)
             }
         ).also { mfaisaHandler = it }
 
@@ -245,6 +245,10 @@ class TransferFragment : Fragment() {
         private const val ARG_REMARKS_PREFILL = "remarks_prefill"
         private const val ARG_BML_QR_URL = "bml_qr_url"
         private const val ARG_AUTO_SCAN = "auto_scan"
+        private const val ARG_RETURN_ON_SUCCESS = "return_on_success"
+
+        /** Fragment result sent instead of opening the receipt when [ARG_RETURN_ON_SUCCESS] is set. */
+        const val RESULT_TRANSFER_DONE = "transfer_done"
 
         fun newInstanceWithAutoScan() = TransferFragment().apply {
             arguments = Bundle().apply { putBoolean(ARG_AUTO_SCAN, true) }
@@ -282,7 +286,8 @@ class TransferFragment : Fragment() {
             displayName: String,
             amount: String?,
             remarks: String?,
-            fromAccountNumber: String? = null
+            fromAccountNumber: String? = null,
+            returnOnSuccess: Boolean = false
         ) = TransferFragment().apply {
             arguments = Bundle().apply {
                 putString(ARG_ACCOUNT, accountNumber)
@@ -292,10 +297,28 @@ class TransferFragment : Fragment() {
                 if (fromAccountNumber != null) putString(ARG_FROM_ACCOUNT, fromAccountNumber)
                 if (amount != null) putString(ARG_AMOUNT_PREFILL, amount)
                 if (remarks != null) putString(ARG_REMARKS_PREFILL, remarks)
+                if (returnOnSuccess) putBoolean(ARG_RETURN_ON_SUCCESS, true)
             }
         }
     }
 
+    /**
+     * Opens the receipt, or — when opened with returnOnSuccess (e.g. from a chat) — goes back to
+     * the caller and tells it via [RESULT_TRANSFER_DONE] on the activity's fragment manager;
+     * the receipt is already in ReceiptStore.
+     */
+    private fun showReceipt(receipt: TransferReceiptData, avatar: Bitmap?) {
+        val activity = requireActivity() as HomeActivity
+        if (arguments?.getBoolean(ARG_RETURN_ON_SUCCESS) == true) {
+            activity.supportFragmentManager.setFragmentResult(RESULT_TRANSFER_DONE, Bundle())
+            // Hosted in a sheet (e.g. over a chat): close the sheet; otherwise leave this page.
+            val sheet = parentFragment as? androidx.fragment.app.DialogFragment
+            if (sheet != null) sheet.dismiss() else parentFragmentManager.popBackStack()
+        } else {
+            activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, avatar))
+        }
+    }
+
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
         _binding = FragmentTransferBinding.inflate(inflater, container, false)
         return binding.root
@@ -1205,7 +1228,7 @@ class TransferFragment : Fragment() {
                         val activity = requireActivity() as HomeActivity
                         activity.triggerRefresh()
                         dialog.dismiss()
-                        activity.showWithBackStack(TransferReceiptFragment.newInstance(receipt, capturedToAvatar))
+                        showReceipt(receipt, capturedToAvatar)
                     } else if (!ok) {
                         dialog.dismiss()
                         if (msg == "CONNECTIVITY") {

app/src/main/java/sh/sar/basedbank/ui/home/TransferSheetFragment.kt

@@ -0,0 +1,60 @@
+package sh.sar.basedbank.ui.home
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import sh.sar.basedbank.databinding.SheetTransferBinding
+
+/**
+ * Shows [TransferFragment] in a bottom sheet so the screen behind (a chat) stays visible.
+ * The transfer page runs unchanged inside; with returnOnSuccess it dismisses this sheet.
+ */
+class TransferSheetFragment : BottomSheetDialogFragment() {
+
+    private var _binding: SheetTransferBinding? = null
+    private val binding get() = _binding!!
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        _binding = SheetTransferBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        // Leave the top of the chat visible above the sheet.
+        binding.transferContainer.layoutParams.height = (resources.displayMetrics.heightPixels * SHEET_HEIGHT_FRACTION).toInt()
+        if (childFragmentManager.findFragmentById(binding.transferContainer.id) == null) {
+            val transferArgs = requireArguments()
+            childFragmentManager.beginTransaction()
+                .replace(binding.transferContainer.id, TransferFragment().apply { arguments = transferArgs })
+                .commitNow()
+        }
+    }
+
+    override fun onStart() {
+        super.onStart()
+        (dialog as? BottomSheetDialog)?.let { d ->
+            // Keep the amount/remarks fields above the keyboard.
+            @Suppress("DEPRECATION")
+            d.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
+            d.behavior.skipCollapsed = true
+            d.behavior.state = BottomSheetBehavior.STATE_EXPANDED
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        private const val SHEET_HEIGHT_FRACTION = 0.8f
+
+        /** [transferArgs] are the arguments of a TransferFragment built by one of its factories. */
+        fun newInstance(transferArgs: Bundle) = TransferSheetFragment().apply { arguments = transferArgs }
+    }
+}

app/src/main/java/sh/sar/basedbank/util/AccountNameStore.kt

@@ -0,0 +1,85 @@
+package sh.sar.basedbank.util
+
+import android.content.Context
+import org.json.JSONObject
+import sh.sar.basedbank.api.bml.BmlSession
+import sh.sar.basedbank.api.bml.BmlValidateClient
+import java.io.File
+
+/**
+ * Encrypted directory of account number → real account-holder name and currency, looked up through BML's
+ * account validation. Saved contacts often carry a nickname, while bank history only shows the
+ * real name; this lets a name-only transfer be matched to the right account.
+ */
+object AccountNameStore {
+
+    private const val FILE_NAME = "account_names.json"
+    private val lock = Any()
+
+    /** Names are re-checked after this long, in case an account changes hands. */
+    private const val REFRESH_AFTER_MS = 30L * 24 * 60 * 60 * 1000
+    /** Failed lookups (closed or foreign accounts) are retried after this long. */
+    private const val RETRY_FAILED_AFTER_MS = 24L * 60 * 60 * 1000
+    /** Upper bound on lookups per call, so a big contact list is resolved over several syncs. */
+    private const val MAX_LOOKUPS_PER_RUN = 20
+
+    data class Info(val name: String, val currency: String)
+
+    private data class Entry(val name: String, val currency: String, val checkedAt: Long)
+
+    /** Account number → real name and currency, for every account resolved so far. */
+    fun all(context: Context): Map<String, Info> = synchronized(lock) {
+        load(context).filterValues { it.name.isNotBlank() }.mapValues { Info(it.value.name, it.value.currency) }
+    }
+
+    /** Looks up names for [accounts] that are unknown or stale. Network I/O — call on Dispatchers.IO. */
+    fun resolve(context: Context, session: BmlSession, accounts: Collection<String>) {
+        val now = System.currentTimeMillis()
+        val known = synchronized(lock) { load(context) }
+        val due = accounts.filter { it.isNotBlank() }.distinct().filter { account ->
+            val e = known[account] ?: return@filter true
+            val age = now - e.checkedAt
+            if (e.name.isBlank()) age > RETRY_FAILED_AFTER_MS else age > REFRESH_AFTER_MS
+        }.take(MAX_LOOKUPS_PER_RUN)
+        if (due.isEmpty()) return
+
+        val client = BmlValidateClient()
+        // null = network error: leave the account due for next time. A failed lookup is stored blank.
+        val found = due.associateWith { account ->
+            try {
+                val v = client.validateAccount(session, account)
+                Entry(v?.name?.trim().orEmpty(), v?.currency.orEmpty(), now)
+            } catch (_: Exception) { null }
+        }
+
+        synchronized(lock) {
+            val current = load(context).toMutableMap()
+            found.forEach { (account, entry) -> if (entry != null) current[account] = entry }
+            save(context, current)
+        }
+    }
+
+    fun clearAll(context: Context) = synchronized(lock) { File(context.filesDir, FILE_NAME).delete() }
+
+    private fun load(context: Context): Map<String, Entry> {
+        val file = File(context.filesDir, FILE_NAME)
+        if (!file.exists()) return emptyMap()
+        return try {
+            val root = JSONObject(CacheEncryption.decrypt(file.readText()))
+            root.keys().asSequence().associateWith { key ->
+                val o = root.getJSONObject(key)
+                Entry(o.optString("name"), o.optString("currency"), o.optLong("checkedAt", 0L))
+            }
+        } catch (_: Exception) { emptyMap() }
+    }
+
+    private fun save(context: Context, entries: Map<String, Entry>) {
+        try {
+            val root = JSONObject()
+            entries.forEach { (account, e) ->
+                root.put(account, JSONObject().put("name", e.name).put("currency", e.currency).put("checkedAt", e.checkedAt))
+            }
+            File(context.filesDir, FILE_NAME).writeText(CacheEncryption.encrypt(root.toString()))
+        } catch (_: Exception) {}
+    }
+}

app/src/main/java/sh/sar/basedbank/util/ChatStore.kt

@@ -0,0 +1,432 @@
+package sh.sar.basedbank.util
+
+import android.content.Context
+import org.json.JSONArray
+import org.json.JSONObject
+import sh.sar.basedbank.BasedBankApp
+import sh.sar.basedbank.api.models.BankAccount
+import sh.sar.basedbank.api.bml.BmlNotificationsClient
+import sh.sar.basedbank.api.models.BankContact
+import sh.sar.basedbank.ui.home.AppNotification
+import sh.sar.basedbank.ui.home.AccountHistoryAdapter
+import java.io.File
+import java.text.SimpleDateFormat
+import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+
+/**
+ * One transfer shown as a chat bubble. BML history only carries the counterparty's name, so
+ * [peerKey] is the normalised name; [ChatStore.threads] groups by the account holder's real name.
+ */
+data class ChatMessage(
+    val id: String,
+    val peerKey: String,
+    val peerName: String,
+    val amount: Double,              // negative = sent, positive = received
+    val currency: String,
+    val timeMillis: Long,
+    val accountNumber: String,       // own account the money moved in/out of
+    val accountDisplayName: String,
+    val reference: String = "",
+    val note: String = "",           // remarks — only known for transfers sent from this app
+    val peerAccount: String = "",    // only known for transfers sent from this app
+    val receiptKey: String = "",     // ReceiptStore entry (its savedAt) for transfers sent from this app
+    val dateOnly: Boolean = false    // bank gave only a date (Favara); time of day unknown
+) {
+    val isSent get() = amount < 0
+    /** "yyyy-MM-dd HH:mm:ss", the format AccountHistoryAdapter's date helpers expect. */
+    val date: String get() = DATE_FMT.format(Date(timeMillis))
+
+    companion object {
+        private val DATE_FMT = SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US)
+    }
+}
+
+/** One of a person's accounts that can be sent to from their chat. */
+data class ChatAccount(
+    val account: String,
+    val currency: String,            // "MVR", "USD"; blank if not known yet
+    val contact: BankContact?        // saved contact for this account, if any
+)
+
+data class ChatThread(
+    val peerKey: String,             // "name:<normalised real name>"
+    val peerName: String,            // contact nickname, else the real name
+    val realName: String,            // account holder's name as the bank knows it; may be blank
+    val accounts: List<ChatAccount>, // empty = no known account, sending from the chat is disabled
+    val messages: List<ChatMessage>  // oldest first
+) {
+    val last get() = messages.last()
+    val contact: BankContact? get() = accounts.firstNotNullOfOrNull { it.contact }
+    /** The account last sent to, else the first known one; blank when none is known. */
+    val peerAccount: String get() =
+        messages.lastOrNull { it.isSent && it.peerAccount.isNotBlank() }?.peerAccount
+            ?.takeIf { a -> accounts.any { it.account == a } }
+            ?: accounts.firstOrNull()?.account.orEmpty()
+}
+
+/**
+ * Encrypted local record of BML transfers, shown as chats.
+ *
+ * Old history is never loaded: the first call to [sync] only stamps the start time, and every
+ * later sync keeps transfers newer than it. Each sync reads BML's transfer notifications (instant),
+ * pages back through the latest history of every BML current/savings account (booked later), and
+ * merges in receipts of transfers sent from this app, keeping one message per transfer.
+ */
+object ChatStore {
+
+    private const val FILE_NAME = "chats.json"
+    private val lock = Any()
+
+    private val CARD_OR_LOAN = setOf("BML_PREPAID", "BML_CREDIT", "BML_DEBIT", "BML_LOAN")
+    private val TRANSFER_TYPES = setOf("Transfer Debit", "Transfer Credit", "Favara Debit", "Favara Credit")
+
+    /** "You have received MVR 5.00 from NAME to 7730*****1234" */
+    private val NOTIF_RECEIVED = Regex("""You have received ([A-Z]{3}) ([\d,]+(?:\.\d+)?) from (.+) to (\S+)""")
+    /** "You have sent MVR 5.00 from 7730*****1234 to NAME" */
+    private val NOTIF_SENT = Regex("""You have sent ([A-Z]{3}) ([\d,]+(?:\.\d+)?) from (\S+) to (.+)""")
+    /** Masked own account in notifications, e.g. "7730*****1234". */
+    private val MASKED_ACCOUNT = Regex("""(\d{3,})\*+(\d{3,})""")
+
+    /** How far apart two records of the same transfer can be timestamped. */
+    private const val MATCH_WINDOW_MS = 15 * 60 * 1000L
+
+    /** Upper bound on history pages fetched per account in one sync. */
+    private const val MAX_PAGES_PER_SYNC = 5
+
+    private const val NAME_KEY_PREFIX = "name:"
+
+    private data class State(val sinceMillis: Long, val messages: List<ChatMessage>)
+
+    fun normalise(name: String) = name.trim().replace(Regex("\\s+"), " ").lowercase(Locale.US)
+
+    fun sinceMillis(context: Context): Long = synchronized(lock) { load(context).sinceMillis }
+
+    fun isStarted(context: Context) = sinceMillis(context) > 0L
+
+    /**
+     * Groups stored messages into chats, most recent chat first. Call off the main thread.
+     *
+     * Chats are per person, keyed by the account holder's real name: bank history only names the
+     * sender, never their account, so money can't be told apart per account anyway. Every known
+     * account with that real name (saved contacts, accounts sent to) belongs to the chat, and the
+     * user picks which one to send to — typically their MVR or USD account.
+     *
+     * Real names come from [AccountNameStore], so a contact saved as "Ali" joins the
+     * "Mohamed Ali" chat.
+     */
+    fun threads(context: Context, contacts: List<BankContact>): List<ChatThread> {
+        val messages = synchronized(lock) { load(context).messages }
+        val lookedUp = AccountNameStore.all(context)
+        val contactsByAccount = contacts.filter { it.benefAccount.isNotBlank() }.associateBy { it.benefAccount }
+
+        fun realNameOf(account: String): String? =
+            lookedUp[account]?.name?.takeIf { it.isNotBlank() }
+                ?: contactsByAccount[account]?.benefName?.takeIf { it.isNotBlank() }
+
+        fun keyOf(m: ChatMessage): String {
+            val name = m.peerAccount.takeIf { it.isNotBlank() }?.let(::realNameOf) ?: m.peerName
+            return NAME_KEY_PREFIX + normalise(name)
+        }
+
+        // Every known account, grouped under its holder's real name.
+        val accountsByKey = HashMap<String, LinkedHashMap<String, ChatAccount>>()
+        fun addAccount(account: String, fallbackCurrency: String) {
+            val name = realNameOf(account) ?: return
+            val contact = contactsByAccount[account]
+            val currency = lookedUp[account]?.currency?.takeIf { it.isNotBlank() }
+                ?: contact?.transferCyDesc?.takeIf { it.isNotBlank() } ?: fallbackCurrency
+            accountsByKey.getOrPut(NAME_KEY_PREFIX + normalise(name)) { LinkedHashMap() }
+                .getOrPut(account) { ChatAccount(account, currency, contact) }
+        }
+        contactsByAccount.keys.forEach { addAccount(it, "") }
+        messages.filter { it.peerAccount.isNotBlank() }.forEach { addAccount(it.peerAccount, it.currency) }
+
+        return messages.groupBy(::keyOf).map { (key, msgs) ->
+            val sorted = msgs.sortedBy { it.timeMillis }
+            val accounts = accountsByKey[key]?.values?.toList().orEmpty()
+            // Bank history and the account lookup carry the real name; a receipt only has our label.
+            val realName = accounts.firstNotNullOfOrNull { lookedUp[it.account]?.name?.takeIf { n -> n.isNotBlank() } }
+                ?: sorted.lastOrNull { !it.id.startsWith("rcpt_") }?.peerName
+                ?: accounts.firstNotNullOfOrNull { it.contact?.benefName?.takeIf { n -> n.isNotBlank() } }
+                ?: ""
+            val nickname = accounts.firstNotNullOfOrNull { it.contact?.benefNickName?.takeIf { n -> n.isNotBlank() } }
+            ChatThread(
+                peerKey  = key,
+                peerName = nickname ?: realName.takeIf { it.isNotBlank() } ?: sorted.last().peerName,
+                realName = realName,
+                accounts = accounts,
+                messages = sorted
+            )
+        }.sortedByDescending { it.last.timeMillis }
+    }
+
+    /** Fetches new transfers and stores them. Does network and file I/O — call on Dispatchers.IO. */
+    suspend fun sync(context: Context, app: BasedBankApp, accounts: List<BankAccount>, contacts: List<BankContact>) {
+        val state = synchronized(lock) { load(context) }
+        if (state.sinceMillis == 0L) {
+            synchronized(lock) { save(context, State(System.currentTimeMillis(), emptyList())) }
+            return
+        }
+        val since = state.sinceMillis
+
+        val history = fetchHistory(app, accounts, since, state.messages.mapTo(HashSet()) { it.id })
+        val notifications = fetchNotifications(context, app, accounts, since)
+        val receipts = receiptMessages(context, accounts, since)
+
+        synchronized(lock) {
+            val current = load(context)
+            save(context, current.copy(messages = merge(current.messages, history + notifications + receipts)))
+        }
+
+        // Learn real names for contacts and people we've sent to, so name-only transfers match them.
+        val session = app.anyBmlSession() ?: return
+        val sentTo = synchronized(lock) { load(context).messages.map { it.peerAccount } }
+        // SWIFT (foreign) beneficiaries can't be looked up through BML.
+        val toResolve = contacts.filter { it.benefType != "S" }.map { it.benefAccount } + sentTo
+        AccountNameStore.resolve(context, session, toResolve)
+    }
+
+    /**
+     * Transfers from account history. BML only adds a transaction here once it is booked (often
+     * the next day), so recent ones come from [fetchNotifications] first.
+     */
+    private suspend fun fetchHistory(
+        app: BasedBankApp,
+        accounts: List<BankAccount>,
+        since: Long,
+        knownIds: Set<String>
+    ): List<ChatMessage> {
+        val fetched = mutableListOf<ChatMessage>()
+        for (account in accounts.filter { it.bank == "BML" && it.profileType !in CARD_OR_LOAN }) {
+            val fetcher = HistoryFetcher(account)
+            var pages = 0
+            // Page back until we reach transfers we already have or ones older than the start time.
+            while (pages < MAX_PAGES_PER_SYNC && fetcher.hasMore()) {
+                val page = try { fetcher.fetchNextPage(app) } catch (_: Exception) { break }
+                pages++
+                if (page.isEmpty()) break
+                var reachedKnown = false
+                for (trx in page) {
+                    val time = AccountHistoryAdapter.parseDateMillis(trx.date)
+                    if (time in 1 until startOfDay(since) || "bml_${trx.id}" in knownIds) reachedKnown = true
+                    trx.toChatMessage(time, since)?.let { fetched += it }
+                }
+                if (reachedKnown) break
+            }
+        }
+        return fetched
+    }
+
+    private fun sh.sar.basedbank.api.models.BankTransaction.toChatMessage(time: Long, since: Long): ChatMessage? {
+        val name = counterpartyName?.trim().orEmpty()
+        if (description !in TRANSFER_TYPES || name.isBlank()) return null
+        // Favara (other-bank) entries carry only a date; keep those from the start day onwards.
+        val dateOnly = date.contains("T00:00:00")
+        if (if (dateOnly) time < startOfDay(since) else time < since) return null
+        return ChatMessage(
+            id                 = "bml_$id",
+            peerKey            = normalise(name),
+            peerName           = name,
+            amount             = amount,
+            currency           = currency,
+            timeMillis         = time,
+            accountNumber      = accountNumber,
+            accountDisplayName = accountDisplayName,
+            reference          = reference.orEmpty(),
+            dateOnly           = dateOnly
+        )
+    }
+
+    /**
+     * Transfers from BML's "Funds Received" / "Funds Transferred" notifications, which arrive
+     * instantly. Uses the notifications the app has cached plus a fresh first page; the fresh page
+     * is not written back to the cache, which the notification poller uses to spot new alerts.
+     */
+    private fun fetchNotifications(
+        context: Context,
+        app: BasedBankApp,
+        accounts: List<BankAccount>,
+        since: Long
+    ): List<ChatMessage> {
+        val client = BmlNotificationsClient()
+        val notifications = LinkedHashMap<String, AppNotification>()
+        for ((loginId, session) in app.bmlSessions.toMap()) {
+            NotificationsCache.loadBml(context, loginId).forEach { notifications[it.id] = it }
+            try { client.fetchNotifications(session, loginId, page = 1).items.forEach { notifications[it.id] = it } }
+            catch (_: Exception) {}
+        }
+        return notifications.values
+            .filter { it.timestampMs >= since }
+            .mapNotNull { notificationToMessage(it, accounts) }
+    }
+
+    private fun notificationToMessage(n: AppNotification, accounts: List<BankAccount>): ChatMessage? {
+        val text = n.message.trim()
+        val received = NOTIF_RECEIVED.matchEntire(text)
+        val sent = if (received == null) NOTIF_SENT.matchEntire(text) else null
+        val (currency, amountText, name, ownMasked) = when {
+            received != null -> received.destructured.let { (c, a, who, own) -> listOf(c, a, who, own) }
+            sent != null -> sent.destructured.let { (c, a, own, who) -> listOf(c, a, who, own) }
+            else -> return null
+        }
+        if (MASKED_ACCOUNT.matches(name.trim())) return null  // between the user's own accounts
+        val amount = amountText.replace(",", "").toDoubleOrNull() ?: return null
+        val own = MASKED_ACCOUNT.matchEntire(ownMasked)?.let { m ->
+            val (head, tail) = m.destructured
+            accounts.firstOrNull { it.bank == "BML" && it.accountNumber.startsWith(head) && it.accountNumber.endsWith(tail) }
+        }
+        return ChatMessage(
+            id                 = "ntf_${n.id}",
+            peerKey            = normalise(name),
+            peerName           = name.trim(),
+            amount             = if (received != null) amount else -amount,
+            currency           = currency,
+            timeMillis         = n.timestampMs,
+            accountNumber      = own?.accountNumber.orEmpty(),
+            accountDisplayName = own?.accountBriefName ?: ownMasked
+        )
+    }
+
+    /** Transfers sent from this app, from their saved receipts: these carry the note and slip. */
+    private fun receiptMessages(context: Context, accounts: List<BankAccount>, since: Long): List<ChatMessage> =
+        ReceiptStore.loadAll(context).mapNotNull { entry ->
+            val r = entry.data
+            if (r.bank != "BML" || entry.savedAt < since) return@mapNotNull null
+            val amount = r.amount.toDoubleOrNull() ?: return@mapNotNull null
+            val time = AccountHistoryAdapter.parseDateMillis(r.bmlTimestamp).takeIf { it > 0L } ?: entry.savedAt
+            val from = accounts.firstOrNull { it.bank == "BML" && it.accountBriefName == r.fromLabel }
+            ChatMessage(
+                id                 = "rcpt_${r.bmlReference.ifBlank { entry.savedAt.toString() }}",
+                peerKey            = normalise(r.toLabel),
+                peerName           = r.toLabel,
+                amount             = -amount,
+                currency           = r.currency,
+                timeMillis         = time,
+                accountNumber      = from?.accountNumber.orEmpty(),
+                accountDisplayName = r.fromLabel,
+                reference          = r.bmlReference,
+                note               = r.remarks,
+                peerAccount        = r.toAccount,
+                receiptKey         = entry.savedAt.toString()
+            )
+        }
+
+    /**
+     * Merges stored and newly fetched messages so each transfer appears once. The same transfer can
+     * come from history, a notification and a receipt; the highest-ranked source is kept (history,
+     * then notification, then receipt) and picks up what the others add: the exact time, the note,
+     * the recipient account and the receipt.
+     */
+    private fun merge(existing: List<ChatMessage>, incoming: List<ChatMessage>): List<ChatMessage> {
+        val byId = LinkedHashMap<String, ChatMessage>()
+        incoming.forEach { byId[it.id] = it }
+        existing.forEach { byId[it.id] = it }  // stored copies already carry merged details
+
+        val kept = mutableListOf<ChatMessage>()
+        val absorbed = HashMap<String, MutableSet<Int>>()  // kept id -> source ranks merged into it
+        for (candidate in byId.values.sortedWith(compareBy({ rank(it) }, { it.timeMillis }))) {
+            val r = rank(candidate)
+            val index = kept.indexOfFirst { k ->
+                rank(k) < r && r !in absorbed[k.id].orEmpty() && sameTransfer(k, candidate)
+            }
+            if (index >= 0) {
+                val k = kept[index]
+                kept[index] = k.copy(
+                    timeMillis    = if (k.dateOnly && !candidate.dateOnly) candidate.timeMillis else k.timeMillis,
+                    dateOnly      = k.dateOnly && candidate.dateOnly,
+                    accountNumber = k.accountNumber.ifBlank { candidate.accountNumber },
+                    reference     = k.reference.ifBlank { candidate.reference },
+                    note          = k.note.ifBlank { candidate.note },
+                    peerAccount   = k.peerAccount.ifBlank { candidate.peerAccount },
+                    receiptKey    = k.receiptKey.ifBlank { candidate.receiptKey }
+                )
+                absorbed.getOrPut(k.id) { mutableSetOf() } += r
+            } else {
+                kept += candidate
+            }
+        }
+        return kept.sortedBy { it.timeMillis }
+    }
+
+    private fun rank(m: ChatMessage) = when {
+        m.id.startsWith("bml_") -> 0
+        m.id.startsWith("ntf_") -> 1
+        else -> 2
+    }
+
+    private fun sameTransfer(a: ChatMessage, b: ChatMessage): Boolean {
+        if (a.reference.isNotBlank() && a.reference == b.reference) return true
+        if (a.isSent != b.isSent || kotlin.math.abs(a.amount - b.amount) >= 0.005) return false
+        if (a.currency.isNotBlank() && b.currency.isNotBlank() && !a.currency.equals(b.currency, ignoreCase = true)) return false
+        if (a.accountNumber.isNotBlank() && b.accountNumber.isNotBlank() && a.accountNumber != b.accountNumber) return false
+        if (a.dateOnly || b.dateOnly) {
+            // A date-only entry could be any transfer that day, so the names must agree too.
+            if (startOfDay(a.timeMillis) != startOfDay(b.timeMillis)) return false
+            val receipt = a.id.startsWith("rcpt_") || b.id.startsWith("rcpt_")
+            return receipt || a.peerKey == b.peerKey || a.peerKey.contains(b.peerKey) || b.peerKey.contains(a.peerKey)
+        }
+        return kotlin.math.abs(a.timeMillis - b.timeMillis) <= MATCH_WINDOW_MS
+    }
+
+    private fun startOfDay(millis: Long): Long = Calendar.getInstance().apply {
+        timeInMillis = millis
+        set(Calendar.HOUR_OF_DAY, 0); set(Calendar.MINUTE, 0); set(Calendar.SECOND, 0); set(Calendar.MILLISECOND, 0)
+    }.timeInMillis
+
+    fun clearAll(context: Context) = synchronized(lock) { File(context.filesDir, FILE_NAME).delete() }
+
+    private fun load(context: Context): State {
+        val file = File(context.filesDir, FILE_NAME)
+        if (!file.exists()) return State(0L, emptyList())
+        return try {
+            val root = JSONObject(CacheEncryption.decrypt(file.readText()))
+            val arr = root.optJSONArray("messages") ?: JSONArray()
+            State(
+                sinceMillis = root.optLong("since", 0L),
+                messages = (0 until arr.length()).map { i ->
+                    val o = arr.getJSONObject(i)
+                    ChatMessage(
+                        id                 = o.optString("id"),
+                        peerKey            = o.optString("peerKey"),
+                        peerName           = o.optString("peerName"),
+                        amount             = o.optDouble("amount", 0.0),
+                        currency           = o.optString("currency"),
+                        timeMillis         = o.optLong("time", 0L),
+                        accountNumber      = o.optString("account"),
+                        accountDisplayName = o.optString("accountName"),
+                        reference          = o.optString("reference"),
+                        note               = o.optString("note"),
+                        peerAccount        = o.optString("peerAccount"),
+                        receiptKey         = o.optString("receiptKey"),
+                        dateOnly           = o.optBoolean("dateOnly", false)
+                    )
+                }
+            )
+        } catch (_: Exception) { State(0L, emptyList()) }
+    }
+
+    private fun save(context: Context, state: State) {
+        try {
+            val arr = JSONArray()
+            for (m in state.messages) arr.put(JSONObject().apply {
+                put("id",          m.id)
+                put("peerKey",     m.peerKey)
+                put("peerName",    m.peerName)
+                put("amount",      m.amount)
+                put("currency",    m.currency)
+                put("time",        m.timeMillis)
+                put("account",     m.accountNumber)
+                put("accountName", m.accountDisplayName)
+                put("reference",   m.reference)
+                put("note",        m.note)
+                put("peerAccount", m.peerAccount)
+                put("receiptKey",  m.receiptKey)
+                put("dateOnly",    m.dateOnly)
+            })
+            val root = JSONObject().put("since", state.sinceMillis).put("messages", arr)
+            File(context.filesDir, FILE_NAME).writeText(CacheEncryption.encrypt(root.toString()))
+        } catch (_: Exception) {}
+    }
+}

app/src/main/res/drawable/bg_chat_date.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="8dp" />
+    <solid android:color="?attr/colorSurfaceContainerHigh" />
+    <stroke android:width="1dp" android:color="?attr/colorOutlineVariant" />
+</shape>

app/src/main/res/drawable/ic_chat.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurfaceVariant"
+        android:pathData="M20,2H4c-1.1,0 -2,0.9 -2,2v18l4,-4h14c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zM6,9h12v2H6V9zM14,14H6v-2h8v2zM18,8H6V6h12v2z"/>
+</vector>

app/src/main/res/drawable/ic_receipt.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurfaceVariant"
+        android:pathData="M19.5,3.5L18,2l-1.5,1.5L15,2l-1.5,1.5L12,2l-1.5,1.5L9,2 7.5,3.5 6,2 4.5,3.5 3,2v20l1.5,-1.5L6,22l1.5,-1.5L9,22l1.5,-1.5L12,22l1.5,-1.5L15,22l1.5,-1.5L18,22l1.5,-1.5L21,22V2l-1.5,1.5zM19,19.09H5V4.91h14v14.18zM6,15h12v2H6zM6,11h12v2H6zM6,7h12v2H6z"/>
+</vector>

app/src/main/res/layout/fragment_chat.xml

@@ -0,0 +1,227 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:id="@+id/toAccountBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/selectableItemBackground"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:paddingHorizontal="16dp"
+        android:paddingVertical="10dp"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="8dp"
+            android:text="@string/chat_to"
+            android:textAppearance="?attr/textAppearanceLabelMedium"
+            android:textColor="?attr/colorOnSurfaceVariant" />
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/tvToAccount"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?attr/textAppearanceBodyLarge"
+                android:textColor="?attr/colorOnSurface" />
+
+            <TextView
+                android:id="@+id/tvToNickname"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textAppearance="?attr/textAppearanceBodySmall"
+                android:textColor="?attr/colorOnSurfaceVariant"
+                android:visibility="gone" />
+
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/tvToCurrency"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:background="@drawable/bg_chat_date"
+            android:paddingHorizontal="10dp"
+            android:paddingVertical="3dp"
+            android:textAppearance="?attr/textAppearanceLabelLarge"
+            android:textColor="?attr/colorOnSurface" />
+
+        <ImageView
+            android:id="@+id/ivToSwitch"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            android:layout_marginStart="8dp"
+            android:rotation="90"
+            android:src="@drawable/ic_arrow_right"
+            android:importantForAccessibility="no" />
+
+    </LinearLayout>
+
+    <com.google.android.material.divider.MaterialDivider
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <LinearLayout
+        android:id="@+id/saveContactBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/colorSurfaceContainerHigh"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:paddingStart="16dp"
+        android:paddingEnd="8dp"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/chat_not_in_contacts"
+            android:textAppearance="?attr/textAppearanceBodyMedium"
+            android:textColor="?attr/colorOnSurfaceVariant" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btnSaveContact"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/chat_save_contact" />
+
+    </LinearLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rvMessages"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:clipToPadding="false"
+        android:paddingHorizontal="12dp"
+        android:paddingVertical="8dp" />
+
+    <com.google.android.material.divider.MaterialDivider
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <TextView
+        android:id="@+id/tvCannotSend"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        android:gravity="center"
+        android:text="@string/chat_cannot_send"
+        android:textAppearance="?attr/textAppearanceBodySmall"
+        android:textColor="?attr/colorOnSurfaceVariant"
+        android:visibility="gone" />
+
+    <LinearLayout
+        android:id="@+id/composer"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingHorizontal="12dp"
+        android:paddingTop="8dp"
+        android:paddingBottom="8dp">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="4dp"
+            android:layout_marginStart="4dp"
+            android:text="@string/chat_from_account"
+            android:textAppearance="?attr/textAppearanceLabelMedium"
+            android:textColor="?attr/colorOnSurfaceVariant" />
+
+        <com.google.android.material.card.MaterialCardView
+            android:id="@+id/cardFromAccount"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clickable="true"
+            android:focusable="true"
+            app:cardCornerRadius="12dp"
+            app:cardElevation="0dp"
+            app:strokeWidth="1dp"
+            app:strokeColor="?attr/colorOutline">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_vertical"
+                android:orientation="horizontal"
+                android:paddingEnd="12dp">
+
+                <include
+                    android:id="@+id/fromAccountRow"
+                    layout="@layout/item_account_dropdown"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1" />
+
+                <ImageView
+                    android:layout_width="24dp"
+                    android:layout_height="24dp"
+                    android:rotation="90"
+                    android:src="@drawable/ic_arrow_right"
+                    android:importantForAccessibility="no" />
+
+            </LinearLayout>
+
+        </com.google.android.material.card.MaterialCardView>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:gravity="center_vertical"
+            android:orientation="horizontal">
+
+            <com.google.android.material.textfield.TextInputLayout
+                android:id="@+id/tilAmount"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:hint="@string/chat_amount"
+                style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
+                app:boxCornerRadiusTopStart="28dp"
+                app:boxCornerRadiusTopEnd="28dp"
+                app:boxCornerRadiusBottomStart="28dp"
+                app:boxCornerRadiusBottomEnd="28dp">
+
+                <com.google.android.material.textfield.TextInputEditText
+                    android:id="@+id/etAmount"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:inputType="numberDecimal"
+                    android:maxLines="1"
+                    android:imeOptions="actionSend" />
+
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btnSend"
+                style="@style/Widget.Material3.Button.Icon"
+                android:layout_width="wrap_content"
+                android:layout_height="56dp"
+                android:layout_marginStart="8dp"
+                android:layout_marginTop="4dp"
+                android:text="@string/chat_send"
+                app:cornerRadius="28dp"
+                app:icon="@drawable/ic_send"
+                app:iconGravity="textEnd" />
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+</LinearLayout>

app/src/main/res/layout/fragment_chats.xml

@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="12dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="4dp"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense"
+        app:startIconDrawable="@android:drawable/ic_menu_search"
+        app:boxCornerRadiusTopStart="24dp"
+        app:boxCornerRadiusTopEnd="24dp"
+        app:boxCornerRadiusBottomStart="24dp"
+        app:boxCornerRadiusBottomEnd="24dp">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/etSearch"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/chats_search_hint"
+            android:inputType="text"
+            android:maxLines="1"
+            android:imeOptions="actionSearch" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipeRefresh"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1">
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/rvChats"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:clipToPadding="false"
+                android:paddingTop="4dp"
+                android:paddingBottom="65dp" />
+
+            <TextView
+                android:id="@+id/emptyView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:layout_marginHorizontal="32dp"
+                android:gravity="center"
+                android:textAppearance="?attr/textAppearanceBodyMedium"
+                android:textColor="?attr/colorOnSurfaceVariant"
+                android:visibility="gone" />
+
+        </FrameLayout>
+
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+</LinearLayout>

app/src/main/res/layout/item_chat.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?attr/selectableItemBackground"
+    android:paddingHorizontal="16dp"
+    android:paddingVertical="10dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/ivAvatar"
+        android:layout_width="52dp"
+        android:layout_height="52dp"
+        app:shapeAppearanceOverlay="@style/ShapeAppearance.Circle"
+        android:scaleType="centerCrop"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+    <TextView
+        android:id="@+id/tvName"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="12dp"
+        android:layout_marginEnd="8dp"
+        android:textAppearance="?attr/textAppearanceBodyLarge"
+        android:textStyle="bold"
+        android:textColor="?attr/colorOnSurface"
+        android:maxLines="1"
+        android:ellipsize="end"
+        app:layout_constraintStart_toEndOf="@id/ivAvatar"
+        app:layout_constraintEnd_toStartOf="@id/tvTime"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/tvPreview"
+        app:layout_constraintVertical_chainStyle="packed" />
+
+    <TextView
+        android:id="@+id/tvTime"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="?attr/textAppearanceLabelSmall"
+        android:textColor="?attr/colorOnSurfaceVariant"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBaseline_toBaselineOf="@id/tvName" />
+
+    <TextView
+        android:id="@+id/tvPreview"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="12dp"
+        android:layout_marginTop="2dp"
+        android:textAppearance="?attr/textAppearanceBodyMedium"
+        android:textColor="?attr/colorOnSurfaceVariant"
+        android:maxLines="1"
+        android:ellipsize="end"
+        app:layout_constraintStart_toEndOf="@id/ivAvatar"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tvName"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/item_chat_bubble.xml

@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/bubbleRow"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:paddingVertical="4dp">
+
+    <com.google.android.material.card.MaterialCardView
+        android:id="@+id/cardBubble"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:minWidth="200dp"
+        app:cardCornerRadius="18dp"
+        app:cardElevation="0dp"
+        app:strokeWidth="0dp">
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:minWidth="200dp"
+            android:orientation="vertical"
+            android:padding="14dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:gravity="center_vertical"
+                android:orientation="horizontal">
+
+                <TextView
+                    android:id="@+id/tvLabel"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:layout_marginEnd="12dp"
+                    android:textAppearance="?attr/textAppearanceBodySmall"
+                    android:maxLines="1"
+                    android:ellipsize="end" />
+
+                <ImageButton
+                    android:id="@+id/btnReceipt"
+                    android:layout_width="32dp"
+                    android:layout_height="32dp"
+                    android:layout_marginEnd="6dp"
+                    android:padding="6dp"
+                    android:background="?attr/selectableItemBackgroundBorderless"
+                    android:contentDescription="@string/chat_view_receipt"
+                    android:scaleType="fitCenter"
+                    android:src="@drawable/ic_receipt"
+                    android:visibility="gone" />
+
+                <TextView
+                    android:id="@+id/tvBadge"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:paddingHorizontal="8dp"
+                    android:paddingVertical="2dp"
+                    android:textAppearance="?attr/textAppearanceLabelSmall" />
+
+            </LinearLayout>
+
+            <TextView
+                android:id="@+id/tvAmount"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:textAppearance="?attr/textAppearanceHeadlineSmall" />
+
+            <TextView
+                android:id="@+id/tvAccount"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="2dp"
+                android:alpha="0.8"
+                android:textAppearance="?attr/textAppearanceBodySmall" />
+
+            <TextView
+                android:id="@+id/tvNote"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:textAppearance="?attr/textAppearanceBodyMedium" />
+
+        </LinearLayout>
+
+    </com.google.android.material.card.MaterialCardView>
+
+    <TextView
+        android:id="@+id/tvMeta"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="2dp"
+        android:layout_marginHorizontal="6dp"
+        android:textAppearance="?attr/textAppearanceLabelSmall"
+        android:textColor="?attr/colorOnSurfaceVariant" />
+
+</LinearLayout>

app/src/main/res/layout/item_chat_date.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingVertical="10dp">
+
+    <TextView
+        android:id="@+id/tvDate"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:background="@drawable/bg_chat_date"
+        android:paddingHorizontal="12dp"
+        android:paddingVertical="4dp"
+        android:textAppearance="?attr/textAppearanceLabelMedium"
+        android:textColor="?attr/colorOnSurface" />
+
+</FrameLayout>

app/src/main/res/layout/sheet_transfer.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <com.google.android.material.bottomsheet.BottomSheetDragHandleView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+    <FrameLayout
+        android:id="@+id/transferContainer"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>

app/src/main/res/layout/view_chat_header.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="wrap_content"
+    android:layout_height="match_parent"
+    android:background="?attr/selectableItemBackground"
+    android:gravity="center_vertical"
+    android:orientation="horizontal"
+    android:paddingEnd="12dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/ivHeaderAvatar"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:scaleType="centerCrop"
+        app:shapeAppearanceOverlay="@style/ShapeAppearance.Circle" />
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="12dp"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/tvHeaderName"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:ellipsize="end"
+            android:maxLines="1"
+            android:textAppearance="?attr/textAppearanceTitleMedium"
+            android:textColor="?attr/colorOnSurface" />
+
+        <TextView
+            android:id="@+id/tvHeaderAccount"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:maxLines="1"
+            android:textAppearance="?attr/textAppearanceBodySmall"
+            android:textColor="?attr/colorOnSurfaceVariant" />
+
+    </LinearLayout>
+
+</LinearLayout>

app/src/main/res/menu/bottom_nav_menu.xml

@@ -6,9 +6,9 @@
     <item android:id="@+id/nav_accounts"
         android:icon="@drawable/ic_nav_accounts"
         android:title="@string/nav_accounts" />
-    <item android:id="@+id/nav_contacts"
-        android:icon="@drawable/ic_contacts"
-        android:title="@string/nav_contacts" />
+    <item android:id="@+id/nav_chats"
+        android:icon="@drawable/ic_chat"
+        android:title="@string/nav_chats" />
     <item android:id="@+id/nav_transfer"
         android:icon="@drawable/ic_send"
         android:title="@string/transfer" />

app/src/main/res/menu/drawer_menu.xml

@@ -17,6 +17,9 @@
         <item android:id="@+id/nav_pay_mv_qr"
             android:icon="@drawable/ic_qr_scan"
             android:title="@string/pay_mv_qr" />
+        <item android:id="@+id/nav_chats"
+            android:icon="@drawable/ic_chat"
+            android:title="@string/nav_chats" />
         <item android:id="@+id/nav_contacts"
             android:icon="@drawable/ic_contacts"
             android:title="@string/nav_contacts" />

app/src/main/res/values/ids.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <item name="action_open_contacts" type="id" />
+</resources>

app/src/main/res/values/strings.xml

@@ -85,6 +85,7 @@
     <string name="nav_add_account">Add Login</string>
     <string name="nav_accounts">Accounts</string>
     <string name="nav_contacts">Contacts</string>
+    <string name="nav_chats">Chats</string>
     <string name="nav_activities">Recent Transfers</string>
     <string name="nav_transfer_history">Transaction History</string>
     <string name="nav_finances">Finances</string>
@@ -94,6 +95,7 @@
     <string name="nav_more">More</string>
     <string name="nav_desc_accounts">View all your bank accounts</string>
     <string name="nav_desc_contacts">Manage your transfer contacts</string>
+    <string name="nav_desc_chats">Your transfers with each person, as chats</string>
     <string name="nav_desc_transfer">Send money to a contact</string>
     <string name="nav_desc_pay_mv_qr">Scan or generate a PayMV QR code</string>
     <string name="nav_desc_activities">View your recent transfers</string>
@@ -400,4 +402,36 @@
     <string name="connectivity_no_internet">Please check your connection and reload Thijooree</string>
     <string name="connectivity_server_error">Connectivity issue with %s</string>
     <string name="drag_to_reorder">Drag to reorder</string>
+
+    <!-- Chats -->
+    <string name="chats_search_hint">Search chats</string>
+    <string name="chats_empty">Chats start from now. New BML transfers will show up here.</string>
+    <string name="chats_empty_since">No transfers since %s. New BML transfers will show up here.</string>
+    <string name="chats_no_results">No chats found</string>
+    <string name="chat_preview_sent">You sent %s</string>
+    <string name="chat_preview_received">Received %s</string>
+    <string name="chat_from_label">From %s</string>
+    <string name="chat_received_label">Received</string>
+    <string name="chat_sent_label">Sent</string>
+    <string name="chat_into_label">To %s</string>
+    <string name="chat_debit">Debit</string>
+    <string name="chat_credit">Credit</string>
+    <string name="chat_sent_meta">✓ Sent · %s</string>
+    <string name="chat_today">Today</string>
+    <string name="chat_yesterday">Yesterday</string>
+    <string name="chat_from_account">From account</string>
+    <string name="chat_pick_account">Send from</string>
+    <string name="chat_transfer_sent">Transfer sent</string>
+    <string name="chat_view_receipt">Receipt</string>
+    <string name="chat_not_in_contacts">Not in your contacts</string>
+    <string name="chat_save_contact">Save contact</string>
+    <string name="chat_send">Send</string>
+    <string name="chat_to">To</string>
+    <string name="chat_pick_recipient_account">Send to</string>
+    <string name="chat_from_to_label">From %1$s → %2$s</string>
+    <string name="chat_receipt_missing">Receipt no longer available</string>
+    <string name="chat_amount">Amount</string>
+    <string name="chat_amount_invalid">Enter an amount</string>
+    <string name="chat_account_subtitle">Account %s</string>
+    <string name="chat_cannot_send">Account number not known for this chat. Save this person as a contact, or send once from Transfer, to send from here.</string>
 </resources>