Metin2 game client (P0–P11) + mobile asset pipeline

Networked client on the existing Godot 4.7 + libgr2 renderer:
- net: m2dev wire protocol (libsodium KX + XChaCha20), auth/select/game
  phases, EntityStore world model, ~all GC/CG headers. char create/delete,
  private shop / mall / cube, SHOP_GC_START_EX, guild, party (+ CG_PARTY_SET_STATE),
  quests, dragon soul, refine, safebox, exchange.
- UI: in-game windows migrated 1:1 from the reference uiscript/root .py —
  char status (/stat), inventory+equipment, select-item ([SELECT_ITEM] quest
  token), system-option + game-option + ESC system menu, private-shop 39-grid,
  party info board, shop tabs, atlas, minimap, quickbar, chat, …
- EterGrnLib polish: GR2 material blend/two-sided, LOD crossfade, motion-event
  dispatch, contact shadow, ray-AABB picking, weapon grip pre-transform.

Portable asset IO (A1) — all extension/libgr2/formats/mtproto reads routed
through godot::FileAccess (res:// PCK works on iOS/Android); standalone-lib
*_path() kept for the non-Godot CTests. AssetResolver + PropertyRegistry
switched to a baked index (bake_asset_index.gd) instead of std::filesystem.

Mobile builds: build-{android,ios}.sh, export-android.sh, pack-assets.sh,
gen-debug-keystore.sh. Assets ship as a zip mounted at runtime by
project/asset_pack.gd (adb push now; HTTP download is a drop-in later).

ctest 10/10, 34 GDScript suites, macOS/iOS/Android all build.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013EJxkHiNKS4kybHS3XKyAJ

project/channel_status_test.gd

@@ -0,0 +1,89 @@
+# channel_status_test —— 频道负载查询（ChannelStatus）headless 自检。
+#   godot --headless --path project --script channel_status_test.gd
+# 起一个进程内 TCP mock 状态服务器，验证请求字节 + 响应解析。
+extends SceneTree
+
+const ChannelStatus = preload("res://net/channel_status.gd")
+
+var _fail := 0
+func _ck(c: bool, m: String) -> void:
+	if not c:
+		_fail += 1
+		printerr("FAIL: " + m)
+
+func _init() -> void:
+	await _run()
+	if _fail == 0:
+		print("PASS: channel_status_test")
+		quit(0)
+	else:
+		printerr("%d check(s) failed" % _fail)
+		quit(1)
+
+func _run() -> void:
+	var srv := TCPServer.new()
+	var port := 0
+	for p in range(52000, 52050):
+		if srv.listen(p) == OK:
+			port = p
+			break
+	_ck(port != 0, "mock server listening")
+
+	var got_req := [PackedByteArray()]
+	var host_node := Node.new()
+	get_root().add_child(host_node)
+
+	var cs: Node = ChannelStatus.new()
+	get_root().add_child(cs)
+	var result := [{}]
+	cs.done.connect(func(m): result[0] = m)
+	cs.query("127.0.0.1", port, Callable(), 3.0)
+
+	# mock 服务器：等连接 → 收请求 → 回 RESPOND_CHANNELSTATUS
+	var conn: StreamPeerTCP = null
+	var replied := false
+	for i in 300:
+		if srv.is_connection_available() and conn == null:
+			conn = srv.take_connection()
+		if conn:
+			conn.poll()
+		if conn and conn.get_status() == StreamPeerTCP.STATUS_CONNECTED:
+			if conn.get_available_bytes() >= 4 and got_req[0].is_empty():
+				got_req[0] = conn.get_data(4)[1]
+			if not got_req[0].is_empty() and not replied:
+				# 先塞一个无关包（header 0x0007 len 6）测试跳过逻辑
+				var noise := PackedByteArray(); noise.resize(6)
+				noise.encode_u16(0, 0x0007); noise.encode_u16(2, 6)
+				conn.put_data(noise)
+				# 再回 RESPOND_CHANNELSTATUS: [0x0010][len=4][int32 count=2][{i16 port,u8 st}×2]
+				var body := PackedByteArray(); body.resize(4 + 4 + 3 + 3)
+				body.encode_u16(0, 0x0010); body.encode_u16(2, 4)
+				body.encode_s32(4, 2)
+				body.encode_s16(8, 13011); body.encode_u8(10, 1)   # CH1 正常
+				body.encode_s16(11, 13021); body.encode_u8(13, 3)  # CH2 爆满
+				conn.put_data(body)
+				replied = true
+		if not result[0].is_empty():
+			break
+		await process_frame
+
+	_ck(got_req[0].size() == 4, "请求 4 字节")
+	if got_req[0].size() == 4:
+		_ck(got_req[0].decode_u16(0) == 0x000F and got_req[0].decode_u16(2) == 4,
+				"请求 = CG_STATE_CHECKER(0x000F) len 4")
+	_ck(result[0].get(13011, -1) == 1, "CH1 (13011) -> status 1")
+	_ck(result[0].get(13021, -1) == 3, "CH2 (13021) -> status 3")
+	_ck(cs.text_for(3) == "爆满" and cs.text_for(1) == "正常", "状态文案")
+
+	# 连不上的端口 -> 空 map，不卡死
+	var cs2: Node = ChannelStatus.new()
+	get_root().add_child(cs2)
+	var r2 := [{"x": 1}]
+	cs2.query("127.0.0.1", 1, func(m): r2[0] = m, 1.0)
+	for i in 120:
+		if not cs2.is_processing():
+			break
+		await process_frame
+	_ck(r2[0].is_empty(), "不可达 -> 空 map")
+
+	srv.stop()