Merge branch 'master' into m3-iter10-20261001

# Conflicts:
#	game/smoke/level_autoplay.gd
#	game/smoke/smoke_all.gd

game/tests/unit/presentation/terrain_tile_sets_test.gd

@@ -36,6 +36,7 @@ func _init() -> void:
 	_check("前置：board_gen 词表非空（%d 型）" % types.size(), types.size() > 0)
 	_test_set_completeness(board_dir, types)
 	_test_hue_domains(board_dir)
+	_test_digit_ink_modes(board_dir, types)
 	if _failures > 0:
 		push_error("[terrain_tile_sets_test] %d/%d 项失败" % [_failures, _checks])
 		quit(1)
@@ -128,3 +129,47 @@ func _load_stats(board_dir: String, fname: String, top_half: bool) -> Dictionary
 	if n_v == 0 or n_h == 0:
 		return {}
 	return {"h": h_sum / n_h, "v": v_sum / n_v}
+
+
+# 数字呈现模式对比断言（L2/L3 亮瓦融字缺陷修复 2026-10-01——甲案机检面，v3.4 扩三态）：
+# 每个图型走 BoardView 同一归一+测光+选模式管线（禁测试侧另写算法），断言：
+# ①dungeon=亮墨族直画（对 p90 ≥4.5 且对均值 ≥2.5）；②underdark/deep_underdark=色牌垫底
+#   （双峰纹理直画不可救——渲染帧取证深墨隐形实证，牌上深墨 12:1）；③直画模式的双门槛值照抄
+#   BoardView 判据常量（防判据漂移）
+func _test_digit_ink_modes(board_dir: String, types: Array) -> void:
+	var expect_plate := {"dungeon": false, "underdark": true, "deep_underdark": true}
+	var variants: int = int(BoardViewScript.TILE_FLOOR_VARIANTS)
+	for bt in types:
+		var lumas: Array = []
+		var readable := true
+		for i in range(1, variants + 1):
+			var p := board_dir.path_join("terrain_floor_%s_%d.png" % [String(bt), i])
+			if not FileAccess.file_exists(p):
+				readable = false
+				break
+			var tex: Texture2D = ImageTexture.create_from_image(Image.load_from_file(p))
+			BoardViewScript._normalize_floor_luma(tex, 0.10, lumas)
+		if not readable:
+			_check("图型 %s 数字墨族断言样本可读" % String(bt), false)
+			continue
+		var mode: Dictionary = BoardViewScript._digit_ink_mode(lumas)
+		var plate: bool = bool(mode["plate"])
+		var dark: bool = bool(mode["dark"])
+		var mode_name := "色牌垫底" if plate else ("深墨族直画" if dark else "亮墨族直画")
+		if plate:
+			_check("图型 %s 双峰纹理落牌（亮族 p90 %.2f/均值 %.2f，深族 p90 %.2f/均值 %.2f 均未过门）" % [
+				String(bt), float(mode["cr_p90_bright"]), float(mode["cr_mean_bright"]),
+				float(mode["cr_p90_dark"]), float(mode["cr_mean_dark"])],
+				float(mode["cr_mean_dark"]) < float(BoardViewScript.DIGIT_INK_CR_MEAN_DARK))
+		else:
+			var cr_p90 := float(mode["cr_p90_bright"]) if not dark else float(mode["cr_p90_dark"])
+			var cr_mean := float(mode["cr_mean_bright"]) if not dark else float(mode["cr_mean_dark"])
+			_check("图型 %s 所选%s 对 p90 ≥%.1f（实测 %.2f）" % [String(bt), mode_name,
+				float(BoardViewScript.DIGIT_INK_CR_P90), cr_p90],
+				cr_p90 >= float(BoardViewScript.DIGIT_INK_CR_P90))
+			var mean_gate := float(BoardViewScript.DIGIT_INK_CR_MEAN_BRIGHT) if not dark else float(BoardViewScript.DIGIT_INK_CR_MEAN_DARK)
+			_check("图型 %s 所选%s 对均值 ≥%.1f（实测 %.2f）" % [String(bt), mode_name, mean_gate, cr_mean],
+				cr_mean >= mean_gate)
+		if expect_plate.has(bt):
+			_check("图型 %s 呈现模式期望=%s（实测=%s）" % [String(bt),
+				"色牌" if bool(expect_plate[bt]) else "直画", mode_name], plate == bool(expect_plate[bt]))