fix: 装备属性面板避让逻辑 + 多项功能更新

- item_tooltip_view.gd: 新增 avoid_rect 属性，tooltip 与装备窗口重叠时自动推到左侧
- inventory_ui.gd: 悬停装备时传入窗口矩形作为避让区域
- 包含其他累积的功能开发和测试文件

extension/tests/net_loopback_test.cpp

@@ -292,6 +292,12 @@ private:
 					m_warp_seen = true;
 					GCWarp w{GC_WARP, sizeof(GCWarp), 4321, 8765, 0, 0};
 					send_raw(&w, sizeof(w));
+					GCCharacterAdd stale_tail{};
+					stale_tail.header = GC_CHARACTER_ADD;
+					stale_tail.length = sizeof(stale_tail);
+					stale_tail.vid = 9902;
+					stale_tail.race = 101;
+					send_raw(&stale_tail, sizeof(stale_tail));
 					break;
 				}
 				case CG_FISHING: {
@@ -714,11 +720,27 @@ int main() {
 		CHECK(auth.done(), "auth reached a result");
 		CHECK(auth.handshaked(), "auth: cipher activated");
 		CHECK(auth.sent_login(), "auth: CG_LOGIN3 sent at PHASE_AUTH");
+		CHECK(auth.login_secret_cleared(), "auth: password cleared after CG_LOGIN3");
 		CHECK(auth.success(), "auth: GC_AUTH_SUCCESS");
 		CHECK(auth.login_key() == 0x0BADF00D, "auth: login_key");
 		login_key = auth.login_key();
 	}
 
+	// A pending auth connection must leave Connecting on the reference
+	// deadline instead of waiting forever for a phase packet.
+	{
+		AuthClient pending("admin", "123456789");
+		if (pending.connect("192.0.2.1", 9, 0) &&
+				pending.state() == NetStream::State::Connecting) {
+			pending.process();
+			CHECK(pending.state() == NetStream::State::Offline,
+					"pending auth connect times out before Online");
+			CHECK(pending.last_error() == "connect timeout", "pending auth connect reports timeout");
+		} else {
+			std::puts("auth connect timeout probe skipped (connect was synchronous)");
+		}
+	}
+
 	// --- game server: connect -> KX -> CG_LOGIN2 -> char list -> select -> GAME ---
 	{
 		MockServer srv(MockServer::Mode::Game);
@@ -841,6 +863,8 @@ int main() {
 			auto warps = game.world().drain_warps();
 			CHECK(!warps.empty() && warps.back().x == 4321 && warps.back().y == 8765,
 					"game: GC_WARP destination surfaced");
+			CHECK(game.world().get(9902) == nullptr,
+					"game: GC_WARP drops pipelined old-socket tail");
 		}
 		CHECK(game.send_fishing(36), "game: CG_FISHING sent");
 		run(srv, game, 200, [] { return false; });