diff --git a/scenes/friends_presence_ui.tscn b/scenes/friends_presence_ui.tscn
new file mode 100644
index 0000000..049e256
--- /dev/null
+++ b/scenes/friends_presence_ui.tscn
@@ -0,0 +1,174 @@
+[gd_scene load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/friends_presence_ui.gd" id="1_fp"]
+
+[node name="FriendsPresenceUI" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_fp")
+
+[node name="VBoxContainer" type="VBoxContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 32.0
+offset_top = 32.0
+offset_right = -32.0
+offset_bottom = -32.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/separation = 12
+
+[node name="HeaderHBox" type="HBoxContainer" parent="VBoxContainer"]
+layout_mode = 2
+theme_override_constants/separation = 16
+
+[node name="BackButton" type="Button" parent="VBoxContainer/HeaderHBox"]
+custom_minimum_size = Vector2(100, 36)
+layout_mode = 2
+text = "< Back"
+
+[node name="TitleLabel" type="Label" parent="VBoxContainer/HeaderHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_font_sizes/font_size = 26
+text = "Friends & Social"
+horizontal_alignment = 1
+
+[node name="RefreshButton" type="Button" parent="VBoxContainer/HeaderHBox"]
+custom_minimum_size = Vector2(100, 36)
+layout_mode = 2
+text = "Refresh"
+
+[node name="MyStatusHBox" type="HBoxContainer" parent="VBoxContainer"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="StatusPrefix" type="Label" parent="VBoxContainer/MyStatusHBox"]
+layout_mode = 2
+text = "My Status:"
+
+[node name="StatusLineEdit" type="LineEdit" parent="VBoxContainer/MyStatusHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+placeholder_text = "What are you doing? (e.g. Exploring worlds...)"
+
+[node name="SetStatusButton" type="Button" parent="VBoxContainer/MyStatusHBox"]
+custom_minimum_size = Vector2(110, 32)
+layout_mode = 2
+text = "Set Status"
+
+[node name="StatusMessageLabel" type="Label" parent="VBoxContainer"]
+layout_mode = 2
+horizontal_alignment = 1
+
+[node name="TabContainer" type="TabContainer" parent="VBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 3
+current_tab = 0
+
+[node name="Friends" type="VBoxContainer" parent="VBoxContainer/TabContainer"]
+layout_mode = 2
+theme_override_constants/separation = 8
+metadata/_tab_index = 0
+
+[node name="Scroll" type="ScrollContainer" parent="VBoxContainer/TabContainer/Friends"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="FriendsList" type="VBoxContainer" parent="VBoxContainer/TabContainer/Friends/Scroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 8
+
+[node name="Requests" type="VBoxContainer" parent="VBoxContainer/TabContainer"]
+visible = false
+layout_mode = 2
+theme_override_constants/separation = 8
+metadata/_tab_index = 1
+
+[node name="SendHBox" type="HBoxContainer" parent="VBoxContainer/TabContainer/Requests"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="TargetUserIdEdit" type="LineEdit" parent="VBoxContainer/TabContainer/Requests/SendHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+placeholder_text = "Enter User ID to add..."
+
+[node name="SendButton" type="Button" parent="VBoxContainer/TabContainer/Requests/SendHBox"]
+custom_minimum_size = Vector2(120, 32)
+layout_mode = 2
+text = "Send Request"
+
+[node name="Scroll" type="ScrollContainer" parent="VBoxContainer/TabContainer/Requests"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="RequestsList" type="VBoxContainer" parent="VBoxContainer/TabContainer/Requests/Scroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 8
+
+[node name="Following" type="VBoxContainer" parent="VBoxContainer/TabContainer"]
+visible = false
+layout_mode = 2
+theme_override_constants/separation = 8
+metadata/_tab_index = 2
+
+[node name="FollowHBox" type="HBoxContainer" parent="VBoxContainer/TabContainer/Following"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="FollowUserIdEdit" type="LineEdit" parent="VBoxContainer/TabContainer/Following/FollowHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+placeholder_text = "Enter User ID to follow..."
+
+[node name="FollowButton" type="Button" parent="VBoxContainer/TabContainer/Following/FollowHBox"]
+custom_minimum_size = Vector2(100, 32)
+layout_mode = 2
+text = "Follow"
+
+[node name="Scroll" type="ScrollContainer" parent="VBoxContainer/TabContainer/Following"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="FollowingList" type="VBoxContainer" parent="VBoxContainer/TabContainer/Following/Scroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 8
+
+[node name="Blocked" type="VBoxContainer" parent="VBoxContainer/TabContainer"]
+visible = false
+layout_mode = 2
+theme_override_constants/separation = 8
+metadata/_tab_index = 3
+
+[node name="BlockHBox" type="HBoxContainer" parent="VBoxContainer/TabContainer/Blocked"]
+layout_mode = 2
+theme_override_constants/separation = 8
+
+[node name="BlockUserIdEdit" type="LineEdit" parent="VBoxContainer/TabContainer/Blocked/BlockHBox"]
+layout_mode = 2
+size_flags_horizontal = 3
+placeholder_text = "Enter User ID to block..."
+
+[node name="BlockButton" type="Button" parent="VBoxContainer/TabContainer/Blocked/BlockHBox"]
+custom_minimum_size = Vector2(100, 32)
+layout_mode = 2
+text = "Block"
+
+[node name="Scroll" type="ScrollContainer" parent="VBoxContainer/TabContainer/Blocked"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="BlockedList" type="VBoxContainer" parent="VBoxContainer/TabContainer/Blocked/Scroll"]
+layout_mode = 2
+size_flags_horizontal = 3
+theme_override_constants/separation = 8
diff --git a/scripts/friends_presence_ui.gd b/scripts/friends_presence_ui.gd
new file mode 100644
index 0000000..8fe3dca
--- /dev/null
+++ b/scripts/friends_presence_ui.gd
@@ -0,0 +1,444 @@
+extends Control
+class_name FriendsPresenceUI
+## Friends & Presence UI panel.
+##
+## Displays:
+## - Friends list with real-time online/offline presence & custom status
+## - Friend requests inbox (with Accept / Decline / Send actions)
+## - Following list (with Unfollow / Follow actions)
+## - Blocked users list (with Unblock / Block actions)
+## - Custom status updater
+
+signal back_requested
+
+@onready var back_button: Button = $VBoxContainer/HeaderHBox/BackButton
+@onready var refresh_button: Button = $VBoxContainer/HeaderHBox/RefreshButton
+@onready var status_label: Label = $VBoxContainer/StatusMessageLabel
+
+@onready var tab_container: TabContainer = $VBoxContainer/TabContainer
+@onready var friends_container: VBoxContainer = $VBoxContainer/TabContainer/Friends/Scroll/FriendsList
+@onready var requests_container: VBoxContainer = $VBoxContainer/TabContainer/Requests/Scroll/RequestsList
+@onready var following_container: VBoxContainer = $VBoxContainer/TabContainer/Following/Scroll/FollowingList
+@onready var blocked_container: VBoxContainer = $VBoxContainer/TabContainer/Blocked/Scroll/BlockedList
+
+@onready var custom_status_input: LineEdit = $VBoxContainer/MyStatusHBox/StatusLineEdit
+@onready var set_status_button: Button = $VBoxContainer/MyStatusHBox/SetStatusButton
+
+# Friend request input
+@onready var send_req_input: LineEdit = $VBoxContainer/TabContainer/Requests/SendHBox/TargetUserIdEdit
+@onready var send_req_button: Button = $VBoxContainer/TabContainer/Requests/SendHBox/SendButton
+
+# Follow input
+@onready var follow_input: LineEdit = $VBoxContainer/TabContainer/Following/FollowHBox/FollowUserIdEdit
+@onready var follow_button: Button = $VBoxContainer/TabContainer/Following/FollowHBox/FollowButton
+
+# Block input
+@onready var block_input: LineEdit = $VBoxContainer/TabContainer/Blocked/BlockHBox/BlockUserIdEdit
+@onready var block_button: Button = $VBoxContainer/TabContainer/Blocked/BlockHBox/BlockButton
+
+var _api_client: Node = null
+var _friend_presence_map: Dictionary = {} # user_id (int) -> {"status": String, "custom_status": String, "last_seen": String}
+
+
+func _ready() -> void:
+	_api_client = _get_api()
+	_wire_signals()
+	if _api_client != null and _api_client.has_token():
+		refresh_all()
+
+
+func _get_api() -> Node:
+	if has_node("/root/ApiClient"):
+		return get_node("/root/ApiClient")
+	return null
+
+
+func _wire_signals() -> void:
+	if back_button:
+		back_button.pressed.connect(_on_back_pressed)
+	if refresh_button:
+		refresh_button.pressed.connect(refresh_all)
+	if set_status_button:
+		set_status_button.pressed.connect(_on_set_status_pressed)
+	if send_req_button:
+		send_req_button.pressed.connect(_on_send_req_pressed)
+	if follow_button:
+		follow_button.pressed.connect(_on_follow_pressed)
+	if block_button:
+		block_button.pressed.connect(_on_block_pressed)
+
+	if _api_client != null and _api_client.ws != null:
+		if not _api_client.ws.presence_changed.is_connected(_on_presence_changed):
+			_api_client.ws.presence_changed.connect(_on_presence_changed)
+
+
+func _on_back_pressed() -> void:
+	back_requested.emit()
+	if get_tree().current_scene == self:
+		get_tree().change_scene_to_file("res://scenes/main_menu.tscn")
+
+
+func show_message(text: String, is_error: bool = false) -> void:
+	if status_label:
+		status_label.text = text
+		status_label.modulate = Color(1.0, 0.4, 0.4) if is_error else Color(0.4, 1.0, 0.4)
+
+
+func refresh_all() -> void:
+	if _api_client == null or not _api_client.has_token():
+		show_message("Please log in to view social features.", true)
+		return
+
+	await refresh_friends()
+	await refresh_requests()
+	await refresh_following()
+	await refresh_blocked()
+
+
+# ── Friends & Presence ──
+
+func refresh_friends() -> void:
+	if _api_client == null:
+		return
+
+	# Fetch mutual presence first
+	var pres_res: Dictionary = await _api_client.get_friends_presence()
+	_friend_presence_map.clear()
+	if pres_res.ok and pres_res.data is Dictionary and pres_res.data.has("friends"):
+		for p in pres_res.data["friends"]:
+			var uid: int = int(p.get("user_id", 0))
+			_friend_presence_map[uid] = p
+
+	# Fetch friends list
+	var res: Dictionary = await _api_client.get_friends()
+	_clear_children(friends_container)
+
+	if not res.ok:
+		show_message("Failed to load friends: " + res.detail, true)
+		return
+
+	var friends_list: Array = []
+	if res.data is Dictionary and res.data.has("friends"):
+		friends_list = res.data["friends"]
+
+	if friends_list.is_empty():
+		var empty_label := Label.new()
+		empty_label.text = "No friends yet. Send a friend request to get started!"
+		empty_label.modulate = Color(0.7, 0.7, 0.7)
+		friends_container.add_child(empty_label)
+		return
+
+	for friend in friends_list:
+		var uid: int = int(friend.get("id", 0))
+		var uname: String = str(friend.get("username", "Unknown"))
+		_build_friend_row(uid, uname)
+
+
+func _build_friend_row(uid: int, uname: String) -> void:
+	var hbox := HBoxContainer.new()
+	hbox.name = "FriendRow_%d" % uid
+	hbox.add_theme_constant_override("separation", 12)
+
+	var pres: Dictionary = _friend_presence_map.get(uid, {})
+	var is_online: bool = pres.get("status", "offline") == "online"
+	var custom_status: String = str(pres.get("custom_status", ""))
+	var last_seen: String = str(pres.get("last_seen", ""))
+
+	# Status indicator dot
+	var status_dot := Label.new()
+	status_dot.text = "●"
+	status_dot.modulate = Color(0.2, 0.9, 0.2) if is_online else Color(0.5, 0.5, 0.5)
+	hbox.add_child(status_dot)
+
+	# Username label
+	var name_label := Label.new()
+	name_label.text = uname
+	name_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+	hbox.add_child(name_label)
+
+	# Presence info
+	var pres_label := Label.new()
+	if is_online:
+		pres_label.text = "Online" + ((" - " + custom_status) if custom_status != "" else "")
+		pres_label.modulate = Color(0.3, 0.9, 0.3)
+	else:
+		pres_label.text = "Offline" + ((" (" + last_seen.left(10) + ")") if last_seen != "" else "")
+		pres_label.modulate = Color(0.6, 0.6, 0.6)
+	pres_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+	hbox.add_child(pres_label)
+
+	# Action: Unfriend
+	var unfriend_btn := Button.new()
+	unfriend_btn.text = "Unfriend"
+	unfriend_btn.pressed.connect(func(): _on_unfriend(uid))
+	hbox.add_child(unfriend_btn)
+
+	# Action: Block
+	var block_btn := Button.new()
+	block_btn.text = "Block"
+	block_btn.pressed.connect(func(): _on_block_friend(uid))
+	hbox.add_child(block_btn)
+
+	friends_container.add_child(hbox)
+
+
+func _on_unfriend(uid: int) -> void:
+	var res: Dictionary = await _api_client.unfriend(uid)
+	if res.ok:
+		show_message("Unfriended user.")
+		refresh_friends()
+	else:
+		show_message("Failed to unfriend: " + res.detail, true)
+
+
+func _on_block_friend(uid: int) -> void:
+	var res: Dictionary = await _api_client.block_user(uid)
+	if res.ok:
+		show_message("Blocked user.")
+		refresh_friends()
+		refresh_blocked()
+	else:
+		show_message("Failed to block user: " + res.detail, true)
+
+
+func _on_presence_changed(uid: int, p_status: String) -> void:
+	if not _friend_presence_map.has(uid):
+		_friend_presence_map[uid] = {}
+	_friend_presence_map[uid]["status"] = p_status
+	# Refresh UI if row exists
+	var row_name := "FriendRow_%d" % uid
+	if friends_container.has_node(row_name):
+		refresh_friends()
+
+
+func _on_set_status_pressed() -> void:
+	if _api_client == null:
+		return
+	var new_status := custom_status_input.text.strip_edges()
+	var res: Dictionary = await _api_client.send_presence_heartbeat(new_status)
+	if res.ok:
+		show_message("Status updated.")
+	else:
+		show_message("Failed to update status: " + res.detail, true)
+
+
+# ── Requests ──
+
+func refresh_requests() -> void:
+	if _api_client == null:
+		return
+	var res: Dictionary = await _api_client.get_friend_requests()
+	_clear_children(requests_container)
+
+	if not res.ok:
+		show_message("Failed to load requests: " + res.detail, true)
+		return
+
+	var req_list: Array = []
+	if res.data is Dictionary and res.data.has("requests"):
+		req_list = res.data["requests"]
+
+	if req_list.is_empty():
+		var empty_label := Label.new()
+		empty_label.text = "No pending friend requests."
+		empty_label.modulate = Color(0.7, 0.7, 0.7)
+		requests_container.add_child(empty_label)
+		return
+
+	for req in req_list:
+		var req_id: int = int(req.get("id", 0))
+		var from_id: int = int(req.get("requester_id", 0))
+		var created_at: String = str(req.get("created_at", "")).left(10)
+
+		var hbox := HBoxContainer.new()
+		hbox.add_theme_constant_override("separation", 12)
+
+		var lbl := Label.new()
+		lbl.text = "Request from User #%d (%s)" % [from_id, created_at]
+		lbl.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		hbox.add_child(lbl)
+
+		var accept_btn := Button.new()
+		accept_btn.text = "Accept"
+		accept_btn.pressed.connect(func(): _on_accept_request(req_id))
+		hbox.add_child(accept_btn)
+
+		var decline_btn := Button.new()
+		decline_btn.text = "Decline"
+		decline_btn.pressed.connect(func(): _on_decline_request(req_id))
+		hbox.add_child(decline_btn)
+
+		requests_container.add_child(hbox)
+
+
+func _on_accept_request(req_id: int) -> void:
+	var res: Dictionary = await _api_client.accept_friend_request(req_id)
+	if res.ok:
+		show_message("Friend request accepted!")
+		refresh_requests()
+		refresh_friends()
+	else:
+		show_message("Failed to accept: " + res.detail, true)
+
+
+func _on_decline_request(req_id: int) -> void:
+	var res: Dictionary = await _api_client.decline_friend_request(req_id)
+	if res.ok:
+		show_message("Friend request declined.")
+		refresh_requests()
+	else:
+		show_message("Failed to decline: " + res.detail, true)
+
+
+func _on_send_req_pressed() -> void:
+	var target_text := send_req_input.text.strip_edges()
+	if not target_text.is_valid_int():
+		show_message("Enter a valid integer user ID.", true)
+		return
+	var target_id := int(target_text)
+	var res: Dictionary = await _api_client.send_friend_request(target_id)
+	if res.ok:
+		show_message("Friend request sent to User #%d!" % target_id)
+		send_req_input.text = ""
+	else:
+		show_message("Failed to send request: " + res.detail, true)
+
+
+# ── Following ──
+
+func refresh_following() -> void:
+	if _api_client == null:
+		return
+	var res: Dictionary = await _api_client.get_following()
+	_clear_children(following_container)
+
+	if not res.ok:
+		return
+
+	var list: Array = []
+	if res.data is Dictionary and res.data.has("following"):
+		list = res.data["following"]
+
+	if list.is_empty():
+		var empty_label := Label.new()
+		empty_label.text = "You are not following anyone."
+		empty_label.modulate = Color(0.7, 0.7, 0.7)
+		following_container.add_child(empty_label)
+		return
+
+	for u in list:
+		var uid: int = int(u.get("id", 0))
+		var uname: String = str(u.get("username", "Unknown"))
+
+		var hbox := HBoxContainer.new()
+		hbox.add_theme_constant_override("separation", 12)
+
+		var lbl := Label.new()
+		lbl.text = "%s (ID: %d)" % [uname, uid]
+		lbl.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		hbox.add_child(lbl)
+
+		var unfollow_btn := Button.new()
+		unfollow_btn.text = "Unfollow"
+		unfollow_btn.pressed.connect(func(): _on_unfollow(uid))
+		hbox.add_child(unfollow_btn)
+
+		following_container.add_child(hbox)
+
+
+func _on_unfollow(uid: int) -> void:
+	var res: Dictionary = await _api_client.unfollow_user(uid)
+	if res.ok:
+		show_message("Unfollowed User #%d." % uid)
+		refresh_following()
+	else:
+		show_message("Failed to unfollow: " + res.detail, true)
+
+
+func _on_follow_pressed() -> void:
+	var target_text := follow_input.text.strip_edges()
+	if not target_text.is_valid_int():
+		show_message("Enter a valid integer user ID.", true)
+		return
+	var target_id := int(target_text)
+	var res: Dictionary = await _api_client.follow_user(target_id)
+	if res.ok:
+		show_message("Following User #%d." % target_id)
+		follow_input.text = ""
+		refresh_following()
+	else:
+		show_message("Failed to follow: " + res.detail, true)
+
+
+# ── Blocked ──
+
+func refresh_blocked() -> void:
+	if _api_client == null:
+		return
+	var res: Dictionary = await _api_client.get_blocked()
+	_clear_children(blocked_container)
+
+	if not res.ok:
+		return
+
+	var list: Array = []
+	if res.data is Dictionary and res.data.has("blocked"):
+		list = res.data["blocked"]
+
+	if list.is_empty():
+		var empty_label := Label.new()
+		empty_label.text = "No blocked users."
+		empty_label.modulate = Color(0.7, 0.7, 0.7)
+		blocked_container.add_child(empty_label)
+		return
+
+	for u in list:
+		var uid: int = int(u.get("id", 0))
+		var uname: String = str(u.get("username", "Unknown"))
+
+		var hbox := HBoxContainer.new()
+		hbox.add_theme_constant_override("separation", 12)
+
+		var lbl := Label.new()
+		lbl.text = "%s (ID: %d)" % [uname, uid]
+		lbl.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+		hbox.add_child(lbl)
+
+		var unblock_btn := Button.new()
+		unblock_btn.text = "Unblock"
+		unblock_btn.pressed.connect(func(): _on_unblock(uid))
+		hbox.add_child(unblock_btn)
+
+		blocked_container.add_child(hbox)
+
+
+func _on_unblock(uid: int) -> void:
+	var res: Dictionary = await _api_client.unblock_user(uid)
+	if res.ok:
+		show_message("Unblocked User #%d." % uid)
+		refresh_blocked()
+	else:
+		show_message("Failed to unblock: " + res.detail, true)
+
+
+func _on_block_pressed() -> void:
+	var target_text := block_input.text.strip_edges()
+	if not target_text.is_valid_int():
+		show_message("Enter a valid integer user ID.", true)
+		return
+	var target_id := int(target_text)
+	var res: Dictionary = await _api_client.block_user(target_id)
+	if res.ok:
+		show_message("Blocked User #%d." % target_id)
+		block_input.text = ""
+		refresh_blocked()
+		refresh_friends()
+	else:
+		show_message("Failed to block: " + res.detail, true)
+
+
+func _clear_children(node: Node) -> void:
+	if node == null:
+		return
+	for c in node.get_children():
+		c.queue_free()
diff --git a/scripts/smoke_test_friends_presence_ui.gd b/scripts/smoke_test_friends_presence_ui.gd
new file mode 100644
index 0000000..c392912
--- /dev/null
+++ b/scripts/smoke_test_friends_presence_ui.gd
@@ -0,0 +1,77 @@
+extends SceneTree
+## Headless smoke test for FriendsPresenceUI scene and script.
+
+func _initialize() -> void:
+	_run()
+
+func _run() -> void:
+	await process_frame
+
+	print("SMOKE: Starting Friends & Presence UI verification...")
+	var scene_res := load("res://scenes/friends_presence_ui.tscn")
+	if scene_res == null:
+		printerr("FAIL: Could not load res://scenes/friends_presence_ui.tscn")
+		quit(1)
+		return
+
+	var ui: Control = scene_res.instantiate()
+	if ui == null:
+		printerr("FAIL: Could not instantiate FriendsPresenceUI")
+		quit(1)
+		return
+
+	root.add_child(ui)
+	await process_frame
+
+	# Verify essential nodes
+	if ui.friends_container == null:
+		printerr("FAIL: friends_container is null")
+		quit(1)
+		return
+
+	if ui.requests_container == null:
+		printerr("FAIL: requests_container is null")
+		quit(1)
+		return
+
+	if ui.following_container == null:
+		printerr("FAIL: following_container is null")
+		quit(1)
+		return
+
+	if ui.blocked_container == null:
+		printerr("FAIL: blocked_container is null")
+		quit(1)
+		return
+
+	# Verify signal declaration
+	if not ui.has_signal("back_requested"):
+		printerr("FAIL: back_requested signal missing")
+		quit(1)
+		return
+
+	# Test mock row building
+	ui._friend_presence_map[42] = {
+		"status": "online",
+		"custom_status": "Building cool stuff",
+		"last_seen": "2026-09-15T12:00:00Z"
+	}
+	ui._build_friend_row(42, "TesterFriend")
+
+	if not ui.friends_container.has_node("FriendRow_42"):
+		printerr("FAIL: FriendRow_42 was not added to friends_container")
+		quit(1)
+		return
+
+	print("PASS: Friend row built successfully with presence indicator.")
+
+	# Test message display
+	ui.show_message("Test message", false)
+	if ui.status_label.text != "Test message":
+		printerr("FAIL: status_label text not updated")
+		quit(1)
+		return
+
+	ui.queue_free()
+	print("SMOKE RESULT: PASS")
+	quit(0)