diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88a1e53..fbfc97b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 本文件记录 Iridium 的重要变更。
 
+## [26.9.5] - 2026-09-13
+
+### Fixed
+- `!!hat`（1.17+）：改用副手缓冲做真正交换，避免复杂 NBT 重建失败导致原头盔消失；副手非空时拒绝并提示
+- `!!share`：展示名优先取 `custom_name` / `display.Name` / translate，不再只显示物品 ID
+
 ## [26.9.4] - 2026-09-13
 
 ### Added
diff --git a/README.md b/README.md
index d0eb2e4..a1d4f47 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ MCDReforged 插件：物品展示 / 戴头 / 获取头颅 / 游戏内计算器 /
 
 | | |
 |---|---|
-| 版本 | **26.9.4** |
+| 版本 | **26.9.5** |
 | 作者 | 云镜之端/SKYMirror |
 | 许可 | 保留所有权益（All Rights Reserved） |
 | 前置 | MCDReforged `>= 2.6.0` |
diff --git a/iridium/hat.py b/iridium/hat.py
index e8e33b9..8702422 100644
--- a/iridium/hat.py
+++ b/iridium/hat.py
@@ -258,52 +258,64 @@ def _extract_item_payload(payload: str, version: Version) -> Optional[str]:
 
 
 def _do_swap(server: PluginServerInterface, src: CommandSource, player: str, version: Version) -> bool:
-	if not is_at_least(version, "1.13"):
-		# Single entitydata dump contains both SelectedItem and head Inventory slot
-		dump = rcon_query(server, _entitydata_query(player))
-		if dump is None:
-			src.reply(RText(tr("hat_query_failed"), RColor.red))
-			return False
-		hotbar_index = _extract_selected_slot(dump)
-		hand = _extract_item_payload(dump, version)
-		if hand is None or _is_air(hand):
-			src.reply(RText(tr("hand_is_empty"), RColor.red))
-			return False
-		head = _extract_head_item(dump, version)
-	else:
+	name = sanitize_name(player)
+	head_slot = _head_slot(version)
+	hand_slot = _hand_slot(version, 0)
+
+	# 1.17+: true swap via offhand buffer — no need to rebuild item NBT
+	if is_at_least(version, "1.17"):
 		hand_raw = rcon_query(server, _selected_query(player, version))
 		if hand_raw is None:
 			src.reply(RText(tr("hat_query_failed"), RColor.red))
 			return False
-		hotbar_index = 0
 		hand = _extract_item_payload(hand_raw, version)
 		if hand is None or _is_air(hand):
 			src.reply(RText(tr("hand_is_empty"), RColor.red))
 			return False
-		head = None
-		head_raw = rcon_query(server, _head_query(player, version))
-		if head_raw is not None:
-			head = _extract_head_item(head_raw, version)
 
-	head_slot = _head_slot(version)
-	hand_slot = _hand_slot(version, hotbar_index)
-	name = sanitize_name(player)
+		off_raw = rcon_query(server, f"data get entity {name} weapon.offhand")
+		off = None
+		if off_raw is not None:
+			off = _extract_item_payload(off_raw, version)
+		if off and not _is_air(off):
+			src.reply(RText(tr("hat_offhand_busy"), RColor.red))
+			return False
 
-	if is_at_least(version, "1.17"):
+		# 1) save head -> offhand  2) hand -> head  3) offhand -> hand  4) clear offhand
+		safe_execute(
+			server,
+			f"item replace entity {name} weapon.offhand from entity {name} {head_slot}",
+		)
 		safe_execute(
 			server,
 			f"item replace entity {name} {head_slot} from entity {name} weapon.mainhand",
 		)
-		if head and not _is_air(head):
-			safe_execute(server, _replace_with(player, hand_slot, head, version))
-		else:
-			safe_execute(server, f"item replace entity {name} {hand_slot} with air")
+		safe_execute(
+			server,
+			f"item replace entity {name} weapon.mainhand from entity {name} weapon.offhand",
+		)
+		safe_execute(server, f"item replace entity {name} weapon.offhand with air")
+		src.reply(RText(tr("hat_success"), RColor.green))
+		return True
+
+	# 1.8–1.16: rebuild via parsed SNBT
+	dump = rcon_query(server, _entitydata_query(player))
+	if dump is None:
+		src.reply(RText(tr("hat_query_failed"), RColor.red))
+		return False
+	hotbar_index = _extract_selected_slot(dump)
+	hand_slot = _hand_slot(version, hotbar_index)
+	hand = _extract_item_payload(dump, version)
+	if hand is None or _is_air(hand):
+		src.reply(RText(tr("hand_is_empty"), RColor.red))
+		return False
+	head = _extract_head_item(dump, version)
+
+	safe_execute(server, _replace_with(player, head_slot, hand, version))
+	if head and not _is_air(head):
+		safe_execute(server, _replace_with(player, hand_slot, head, version))
 	else:
-		safe_execute(server, _replace_with(player, head_slot, hand, version))
-		if head and not _is_air(head):
-			safe_execute(server, _replace_with(player, hand_slot, head, version))
-		else:
-			safe_execute(server, _replace_with(player, hand_slot, "minecraft:air", version))
+		safe_execute(server, _replace_with(player, hand_slot, "minecraft:air", version))
 
 	src.reply(RText(tr("hat_success"), RColor.green))
 	return True
diff --git a/iridium/share.py b/iridium/share.py
index 1927b86..5040117 100644
--- a/iridium/share.py
+++ b/iridium/share.py
@@ -63,6 +63,35 @@ def _json_str(value: str) -> str:
 	return json.dumps(value, ensure_ascii=False)[1:-1]
 
 
+def _extract_display_name(item_snbt: str) -> str:
+	"""Best-effort human-readable name from item SNBT."""
+	# JSON text component: "text":"Name"
+	m = re.search(r'"text"\s*:\s*"([^"]+)"', item_snbt)
+	if m and m.group(1).strip():
+		return _strip_mc_codes(m.group(1).strip())
+	# display.Name / custom_name as plain string
+	m = re.search(r'(?:Name|custom_name)\s*:\s*"([^"]+)"', item_snbt)
+	if m and m.group(1).strip():
+		return _strip_mc_codes(m.group(1).strip())
+	m = re.search(r"(?:Name|custom_name)\s*:\s*'([^']+)'", item_snbt)
+	if m and m.group(1).strip():
+		return _strip_mc_codes(m.group(1).strip())
+	# translation key fallback (e.g. block.ae2.fluix_covered_cable)
+	m = re.search(r'"translate"\s*:\s*"([^"]+)"', item_snbt)
+	if m and m.group(1).strip():
+		key = m.group(1).strip()
+		short = key.rsplit(".", 1)[-1]
+		return short.replace("_", " ")
+	id_match = re.search(r'id\s*:\s*"([^"]+)"', item_snbt)
+	if id_match:
+		return id_match.group(1)
+	return "?"
+
+
+def _strip_mc_codes(text: str) -> str:
+	return re.sub(r"§[0-9a-fk-orA-FK-OR]", "", text)
+
+
 def _build_tellraw(player: str, item_snbt: str, version: Version) -> str:
 	# Truncate pathological NBT (huge books etc.) so the command stays valid
 	if len(item_snbt) > MAX_SNBT_LEN:
@@ -88,10 +117,7 @@ def _build_tellraw(player: str, item_snbt: str, version: Version) -> str:
 		click = '{"action":"suggest_command","value":"' + _json_str(suggest) + '"}'
 		click_label = _json_str(tr("click_suggest"))
 
-	id_match = re.search(r'id\s*:\s*"([^"]+)"', item_snbt)
-	item_id = id_match.group(1) if id_match else "?"
-	name_match = re.search(r'"text"\s*:\s*"([^"]+)"', item_snbt)
-	display = name_match.group(1) if name_match else item_id
+	display = _extract_display_name(item_snbt)
 	display_js = _json_str(display)
 
 	json_text = (
diff --git a/lang/en_us.yml b/lang/en_us.yml
index a422d91..0077a77 100644
--- a/lang/en_us.yml
+++ b/lang/en_us.yml
@@ -19,6 +19,7 @@ iridium.hat_success: 'Swapped hand item with head equipment'
 iridium.hat_unsupported_version: 'Version {0} does not support !!hat (needs Minecraft 1.8+)'
 iridium.hat_need_rcon: '!!hat requires RCON enabled to read and swap item data'
 iridium.hat_query_failed: 'Failed to query player item data'
+iridium.hat_offhand_busy: 'Off-hand is occupied; clear it before using !!hat'
 iridium.head_help: 'Get one player head (optional player name, cooldown {0}s)'
 iridium.head_help_short: 'Get one player head (optional player name)'
 iridium.head_success: 'You received a head of {0}'
diff --git a/lang/zh_cn.yml b/lang/zh_cn.yml
index 28af789..fa863e2 100644
--- a/lang/zh_cn.yml
+++ b/lang/zh_cn.yml
@@ -19,6 +19,7 @@ iridium.hat_success: '已交换手上物品与头部装备'
 iridium.hat_unsupported_version: '当前版本 {0} 不支持 !!hat（需要 Minecraft 1.8+）'
 iridium.hat_need_rcon: '!!hat 需要启用 RCON 才能读取并交换物品数据'
 iridium.hat_query_failed: '读取玩家物品数据失败'
+iridium.hat_offhand_busy: '副手有物品，无法安全交换；请先清空副手再使用 !!hat'
 iridium.head_help: '获取一个玩家头颅（可指定玩家名，冷却 {0} 秒）'
 iridium.head_help_short: '获取一个玩家头颅（可指定玩家名）'
 iridium.head_success: '已给予你 {0} 的头颅'
diff --git a/mcdreforged.plugin.json b/mcdreforged.plugin.json
index 9da4fc1..f24d31f 100644
--- a/mcdreforged.plugin.json
+++ b/mcdreforged.plugin.json
@@ -1,6 +1,6 @@
 {
 	"id": "iridium",
-	"version": "26.9.4",
+	"version": "26.9.5",
 	"name": "Iridium",
 	"description": {
 		"zh_cn": "物品展示 / 戴头 / 获取头颅 / 游戏内计算器 / 进服 MOTD",