feat(ui): entity-anchored dialogue log with keyboard selection

Log entries store entity IDs and resolve display names at render
time from _entity_display lookup — enables retroactive name update
when player learns an NPC's real name. Color index from server
replaces name-hash coloring for stable NPC colors.

Dialogue options: switched RichTextLabel to Label (fixes stacking
bug), added 1/2/3 number key selection, numbered option labels.

Interaction list: added background panel, mouse hover highlighting,
click-to-interact, pointing hand cursor.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/ui/interaction_list.gd

@@ -19,10 +19,12 @@ const LABEL_GAP := 2
 const INSERT_FG := Constants.IMPLANT_TEXT_COLOR
 const INSERT_DIM := Constants.IMPLANT_TEXT_DIM
 const INSERT_BG := Color(0.05, 0.05, 0.08, 0.7)
+const ENTITY_OFFSET := Vector2(0, -12)  # nudge above entity sprite center
 
 var _showing: bool = false
 var _insert_active: bool = true
 var _current_target_id: int = -1
+var _entity_world_pos: Vector2 = Vector2.ZERO  # cached world tile position of target
 var _verb_items: Array = []  # sorted [{kind, label, priority, available}]
 var _selected_index: int = 0
 var _active_tween: Tween = null
@@ -37,6 +39,21 @@ func _ready() -> void:
 	mouse_filter = Control.MOUSE_FILTER_IGNORE
 
 
+func _process(_delta: float) -> void:
+	if _showing:
+		_update_screen_position()
+		queue_redraw()
+
+
+func _draw() -> void:
+	if not _showing or _verb_labels.is_empty():
+		return
+	var pad := 6.0
+	var bg_rect := Rect2(-pad, -pad, size.x + pad * 2, size.y + pad * 2)
+	draw_rect(bg_rect, INSERT_BG)
+	draw_rect(bg_rect, Constants.IMPLANT_TEXT_DIM * Color(1, 1, 1, 0.3), false, 1.0)
+
+
 func update_from_state() -> void:
 	# D-055: Sprint stance suppresses interaction list
 	if GameState.player_stance == "Sprint":
@@ -70,6 +87,7 @@ func update_from_state() -> void:
 	_current_target_id = entity_id
 	_verb_items = sorted
 	_selected_index = 0
+	_cache_entity_position()
 	_rebuild_labels()
 	_show()
 
@@ -84,15 +102,46 @@ func _rebuild_labels() -> void:
 	for i in range(_verb_items.size()):
 		var verb: Dictionary = _verb_items[i]
 		var lbl := Label.new()
-		lbl.text = verb.get("label", "")
+		lbl.text = " %s " % verb.get("label", "")
 		lbl.add_theme_font_size_override("font_size", 14)
 		lbl.add_theme_color_override("font_color", INSERT_FG if i == _selected_index else INSERT_DIM)
 		lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_LEFT
-		lbl.mouse_filter = Control.MOUSE_FILTER_IGNORE
+		lbl.mouse_filter = Control.MOUSE_FILTER_STOP
+		lbl.mouse_default_cursor_shape = Control.CURSOR_POINTING_HAND
+		var idx := i
+		lbl.gui_input.connect(func(event: InputEvent):
+			if event is InputEventMouseButton and event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+				_select_and_interact(idx)
+		)
+		lbl.mouse_entered.connect(func(): _hover_index(idx))
+		lbl.mouse_exited.connect(func(): _unhover_index(idx))
 		_vbox.add_child(lbl)
 		_verb_labels.append(lbl)
 
 
+## Cache the target entity's world tile position from GameState.visible_entities.
+func _cache_entity_position() -> void:
+	for entity in GameState.visible_entities:
+		if entity.get("entity_id") == _current_target_id:
+			_entity_world_pos = Vector2(entity.x, entity.y)
+			return
+
+
+## Convert entity world position to screen coords and reposition this Control.
+## Runs every frame while showing so the list tracks the entity as the camera moves.
+func _update_screen_position() -> void:
+	var camera := get_viewport().get_camera_2d()
+	if camera == null:
+		return
+	var viewport_size := get_viewport_rect().size
+	var cam_center := camera.get_screen_center_position()
+	var zoom: Vector2 = camera.zoom if camera.zoom.length_squared() > 0.01 else Constants.CAMERA_DEFAULT_ZOOM
+	var world_px := _entity_world_pos * Constants.TILE_SIZE
+	var screen_pos := (world_px - cam_center) * zoom + viewport_size / 2.0
+	# Anchor above the entity, centered horizontally
+	position = screen_pos + ENTITY_OFFSET * zoom - Vector2(size.x / 2.0, size.y)
+
+
 func _show() -> void:
 	if _showing:
 		return
@@ -161,6 +210,29 @@ func get_verb_labels() -> Array:
 	return labels
 
 
+func _hover_index(idx: int) -> void:
+	_selected_index = idx
+	_update_label_colors()
+
+
+func _unhover_index(_idx: int) -> void:
+	pass  # keep last hover highlighted
+
+
+func _select_and_interact(idx: int) -> void:
+	if idx < 0 or idx >= _verb_items.size():
+		return
+	_selected_index = idx
+	verb_selected.emit(_verb_items[idx].get("kind", ""), _current_target_id)
+
+
+func _update_label_colors() -> void:
+	for i in range(_verb_labels.size()):
+		if is_instance_valid(_verb_labels[i]):
+			_verb_labels[i].add_theme_color_override(
+				"font_color", INSERT_FG if i == _selected_index else INSERT_DIM)
+
+
 func set_insert_active(active: bool) -> void:
 	_insert_active = active
 	if not active and _showing: