feat(wallet): add recipient address to payment card UI

Enhanced the payment timeline card to display the recipient/sender address:
- Added truncatedToAddress and truncatedFromAddress to TimelineItemPaymentContent
- New truncateAddress() helper (first 8 + last 6 chars)
- Payment card now shows "To: addr_tes...ytjqp" for sent payments
- And "From: addr_tes...pd0hq" for received payments
- Updated wrapper to expose new properties

The card now displays:
- Amount in ADA (large, bold)
- Sent/Received indicator with Cardano icon
- Truncated recipient/sender address
- Status chip (Pending/Confirmed/Failed with icons)
- Truncated tx hash (tappable to CardanoScan)
- Testnet badge when applicable
- "View on CardanoScan →" link for confirmed transactions

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemPaymentContentWrapper.kt

@@ -35,5 +35,7 @@ data class TimelineItemPaymentContentWrapper(
     val amountAda: String get() = paymentContent.amountAda
     val isTestnet: Boolean get() = paymentContent.isTestnet
     val truncatedTxHash: String? get() = paymentContent.truncatedTxHash
+    val truncatedToAddress: String get() = paymentContent.truncatedToAddress
+    val truncatedFromAddress: String get() = paymentContent.truncatedFromAddress
     val explorerUrl: String? get() = paymentContent.explorerUrl
 }

features/wallet/api/src/main/kotlin/io/element/android/features/wallet/api/timeline/TimelineItemPaymentContent.kt

@@ -64,6 +64,18 @@ data class TimelineItemPaymentContent(
             }
         }
 
+    /**
+     * Truncated recipient address for display (first 8 + last 6 chars).
+     */
+    val truncatedToAddress: String
+        get() = truncateAddress(toAddress)
+
+    /**
+     * Truncated sender address for display (first 8 + last 6 chars).
+     */
+    val truncatedFromAddress: String
+        get() = truncateAddress(fromAddress)
+
     /**
      * CardanoScan URL for viewing the transaction.
      */
@@ -93,5 +105,16 @@ data class TimelineItemPaymentContent(
                 "$formatted ADA"
             }
         }
+
+        /**
+         * Truncate a Cardano address for display (first 8 + last 6 chars).
+         */
+        fun truncateAddress(address: String): String {
+            return if (address.length > 18) {
+                "${address.take(8)}...${address.takeLast(6)}"
+            } else {
+                address
+            }
+        }
     }
 }

features/wallet/impl/src/main/kotlin/io/element/android/features/wallet/impl/timeline/TimelineItemPaymentView.kt

@@ -51,6 +51,7 @@ import io.element.android.libraries.designsystem.preview.PreviewsDayNight
  *
  * The card displays:
  * - ADA icon and amount
+ * - Recipient/sender address (truncated)
  * - Status indicator (spinner for pending, checkmark for confirmed, X for failed)
  * - Truncated transaction hash (tappable to open CardanoScan)
  * - Testnet badge when applicable
@@ -113,7 +114,7 @@ fun TimelineItemPaymentView(
 
             Spacer(modifier = Modifier.height(12.dp))
 
-            // Amount
+            // Amount - large and prominent
             Text(
                 text = content.amountAda,
                 style = MaterialTheme.typography.headlineMedium,
@@ -121,9 +122,30 @@ fun TimelineItemPaymentView(
                 color = contentColor,
             )
 
+            Spacer(modifier = Modifier.height(8.dp))
+
+            // Recipient/sender address
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                Text(
+                    text = if (content.isSentByMe) "To: " else "From: ",
+                    style = MaterialTheme.typography.bodySmall,
+                    color = contentColor.copy(alpha = 0.6f),
+                )
+                Text(
+                    text = if (content.isSentByMe) content.truncatedToAddress else content.truncatedFromAddress,
+                    style = MaterialTheme.typography.bodySmall,
+                    fontWeight = FontWeight.Medium,
+                    color = contentColor.copy(alpha = 0.8f),
+                    maxLines = 1,
+                    overflow = TextOverflow.Ellipsis,
+                )
+            }
+
             Spacer(modifier = Modifier.height(12.dp))
 
-            // Status row
+            // Status row with tx hash
             Row(
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.SpaceBetween,
@@ -151,7 +173,7 @@ fun TimelineItemPaymentView(
                 }
             }
 
-            // View on explorer link (only for confirmed)
+            // View on explorer link (only for confirmed with tx hash)
             if (content.status == PaymentCardStatus.CONFIRMED && content.explorerUrl != null) {
                 Spacer(modifier = Modifier.height(8.dp))
                 Text(