refactor(ui): tokenize world_map scene colors (p2-74 cluster 3a)

Route inline Color() in world_map/** scene scripts onto ThemeAssets design
tokens. Visual-only (Rail 3), no logic change:

- arena_overlay: const P0/P1_COLOR -> build()-populated vars from player.blue/
  player.orange; title -> accent.gold; turn label -> accent.science
- courier_route_overlay: const COLOR_IN_TRANSIT/DELIVERED -> _ready()-populated
  vars from accent.sage (alpha preserved per state)
- tile_info_panel: panel stylebox bg/border -> background.overlay/border.panel;
  invalid-yield modulate -> semantic.negative; pop count -> accent.sage
- world_map: placement-area highlight -> accent.science (alpha preserved)
- world_map_units: patrol line + flag labels -> accent.science

Computed player-color overlays (arena_playback combat flash) and neutral
white fallbacks/resets left as-is — genuinely dynamic, no token applies.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/game/engine/scenes/world_map/arena_overlay.gd

@@ -12,11 +12,11 @@ extends RefCounted
 
 const ARROW: String = "▶ "
 const DIM_ALPHA: float = 0.42
-## Player 0 and player 1 label colors. Sourced from GameState.PLAYER_COLORS
-## by index; kept as constants here for fast access and to avoid churn if
-## PLAYER_COLORS changes length.
-const P0_COLOR: Color = Color(0.30, 0.62, 1.00)  ## calm blue
-const P1_COLOR: Color = Color(1.00, 0.52, 0.28)  ## warm orange
+## Player 0 and player 1 label colors. Token-sourced (ThemeAssets.color isn't
+## const-eval safe), populated in build(). Calm blue / warm orange map to the
+## player palette tokens.
+var _p0_color: Color = Color(0.30, 0.62, 1.00)
+var _p1_color: Color = Color(1.00, 0.52, 0.28)
 
 var _p1_label: Label = null
 var _p2_label: Label = null
@@ -38,6 +38,8 @@ func build(
 ) -> Label:
 	_p1_name = p1
 	_p2_name = p2
+	_p0_color = ThemeAssets.color("player.blue")
+	_p1_color = ThemeAssets.color("player.orange")
 
 	var layer: CanvasLayer = CanvasLayer.new()
 	layer.name = "ArenaOverlay"
@@ -51,14 +53,14 @@ func build(
 
 	var title: Label = Label.new()
 	title.text = "%s · seed %d" % [match_id, seed_value]
-	title.add_theme_color_override("font_color", Color(1.0, 0.85, 0.4))
+	title.add_theme_color_override("font_color", ThemeAssets.color("accent.gold"))
 	title.add_theme_font_size_override("font_size", 13)
 
-	_p1_label = _make_player_label(p1, P0_COLOR)
+	_p1_label = _make_player_label(p1, _p0_color)
 	var vs: Label = Label.new()
 	vs.text = "  vs  "
 	vs.add_theme_font_size_override("font_size", 12)
-	_p2_label = _make_player_label(p2, P1_COLOR)
+	_p2_label = _make_player_label(p2, _p1_color)
 
 	var versus_row: HBoxContainer = HBoxContainer.new()
 	versus_row.add_child(_p1_label)
@@ -68,7 +70,7 @@ func build(
 	_turn_label = Label.new()
 	_turn_label.text = "turn 1 / %d" % turn_limit
 	_turn_label.add_theme_color_override(
-		"font_color", Color(0.6, 0.85, 1.0)
+		"font_color", ThemeAssets.color("accent.science")
 	)
 	_turn_label.add_theme_font_size_override("font_size", 11)
 

src/game/engine/scenes/world_map/courier_route_overlay.gd

@@ -9,11 +9,16 @@ extends Node2D
 ## Data source: EventBus courier diplomacy signals. No polling.
 
 const HEX_PIXEL_SIZE: float = 64.0
-const COLOR_IN_TRANSIT: Color = Color(0.65, 0.90, 0.65, 0.40)
-const COLOR_DELIVERED: Color = Color(0.65, 0.90, 0.65, 0.90)
+const IN_TRANSIT_ALPHA: float = 0.40
+const DELIVERED_ALPHA: float = 0.90
 const COURIER_ICON_RADIUS: float = 6.0
 const ROUTE_LINE_WIDTH: float = 2.5
 
+## Courier-route green, token-sourced in _ready() (ThemeAssets.color isn't
+## const-eval safe). Same hue at two alphas: faded in transit, solid delivered.
+var _color_in_transit: Color = Color(0.65, 0.90, 0.65, IN_TRANSIT_ALPHA)
+var _color_delivered: Color = Color(0.65, 0.90, 0.65, DELIVERED_ALPHA)
+
 ## Keyed by agreement_id (int). Each value is a Dictionary with keys:
 ## agreement_id, from_player, to_player, from_capital, to_capital,
 ## courier_pos (Vector2i), eta_turn (int), delivered (bool), intercepted (bool).
@@ -21,6 +26,9 @@ var _routes: Dictionary = {}
 
 
 func _ready() -> void:
+	var base: Color = ThemeAssets.color("accent.sage")
+	_color_in_transit = Color(base.r, base.g, base.b, IN_TRANSIT_ALPHA)
+	_color_delivered = Color(base.r, base.g, base.b, DELIVERED_ALPHA)
 	EventBus.courier_dispatched.connect(_on_courier_dispatched)
 	EventBus.courier_intercepted.connect(_on_courier_intercepted)
 	EventBus.shared_map_delivered.connect(_on_shared_map_delivered)
@@ -86,11 +94,11 @@ func _draw() -> void:
 		var from_px: Vector2 = _axial_to_pixel(route["from_capital"])
 		var to_px: Vector2 = _axial_to_pixel(route["to_capital"])
 		var delivered: bool = bool(route.get("delivered", false))
-		var line_color: Color = COLOR_DELIVERED if delivered else COLOR_IN_TRANSIT
+		var line_color: Color = _color_delivered if delivered else _color_in_transit
 		draw_line(from_px, to_px, line_color, ROUTE_LINE_WIDTH)
 		if not delivered:
 			var courier_px: Vector2 = _axial_to_pixel(route["courier_pos"])
-			draw_circle(courier_px, COURIER_ICON_RADIUS, COLOR_DELIVERED)
+			draw_circle(courier_px, COURIER_ICON_RADIUS, _color_delivered)
 			draw_arc(courier_px, COURIER_ICON_RADIUS + 2.0, 0.0, TAU, 16, Color(1, 1, 1, 0.7), 1.5)
 
 

src/game/engine/scenes/world_map/tile_info_panel.gd

@@ -34,8 +34,8 @@ func _ready() -> void:
 
 func _apply_panel_style() -> void:
 	var style: StyleBoxFlat = StyleBoxFlat.new()
-	style.bg_color = Color(0.02, 0.02, 0.05, 0.92)
-	style.border_color = Color(0.4, 0.35, 0.2, 0.8)
+	style.bg_color = ThemeAssets.color("background.overlay")
+	style.border_color = ThemeAssets.color("border.panel")
 	style.set_border_width_all(1)
 	style.set_corner_radius_all(3)
 	add_theme_stylebox_override("panel", style)
@@ -203,7 +203,7 @@ func show_tile_with_placement_preview(
 			var reason: String = str(preview.get("reason", ""))
 			_worked_yield_label.text = ThemeVocabulary.lookup("placement_invalid") % reason
 			_worked_yield_label.visible = true
-			_worked_yield_label.modulate = Color(0.85, 0.3, 0.3, 1)
+			_worked_yield_label.modulate = ThemeAssets.color("semantic.negative")
 			return
 	_worked_yield_label.modulate = Color(1, 1, 1, 1)
 
@@ -251,7 +251,7 @@ func _populate_ecology_species(axial: Vector2i) -> void:
 		pop_lbl.custom_minimum_size.x = 60
 		pop_lbl.horizontal_alignment = HORIZONTAL_ALIGNMENT_RIGHT
 		pop_lbl.add_theme_font_size_override("font_size", 12)
-		pop_lbl.add_theme_color_override("font_color", Color(0.7, 0.85, 0.7))
+		pop_lbl.add_theme_color_override("font_color", ThemeAssets.color("accent.sage"))
 		row.add_child(pop_lbl)
 
 		_ecology_list.add_child(row)

src/game/engine/scenes/world_map/world_map.gd

@@ -1913,7 +1913,8 @@ func _refresh_placement_overlay() -> void:
 		for v: Vector2 in hex_poly:
 			shifted.append(origin + v)
 		poly.polygon = shifted
-		poly.color = Color(0.6, 0.85, 1.0, 0.22)
+		var hl: Color = ThemeAssets.color("accent.science")
+		poly.color = Color(hl.r, hl.g, hl.b, 0.22)
 		_placement_overlay_node.add_child(poly)
 
 

src/game/engine/scenes/world_map/world_map_units.gd

@@ -82,7 +82,8 @@ func draw_waypoint_overlay(parent_node: Node2D, waypoints: Array) -> void:
 	line.name = "PatrolPolyline"
 	line.add_to_group("patrol_overlay")
 	line.width = 2.0
-	line.default_color = Color(0.3, 0.6, 1.0, 0.75)
+	var patrol_hl: Color = ThemeAssets.color("accent.science")
+	line.default_color = Color(patrol_hl.r, patrol_hl.g, patrol_hl.b, 0.75)
 	for wp: Variant in waypoints:
 		var pixel: Vector2 = HexUtilsScript.axial_to_pixel(wp as Vector2i)
 		line.add_point(pixel)
@@ -95,7 +96,7 @@ func draw_waypoint_overlay(parent_node: Node2D, waypoints: Array) -> void:
 		flag_label.add_to_group("patrol_overlay")
 		flag_label.text = str(i + 1)
 		flag_label.add_theme_font_size_override("font_size", 13)
-		flag_label.add_theme_color_override("font_color", Color(0.2, 0.8, 1.0))
+		flag_label.add_theme_color_override("font_color", ThemeAssets.color("accent.science"))
 		flag_label.position = pixel + Vector2(-6.0, -20.0)
 		parent_node.add_child(flag_label)