diff --git a/LogicBeacon/LogicBeacon.lua b/LogicBeacon/LogicBeacon.lua
index e897709..36e3956 100644
--- a/LogicBeacon/LogicBeacon.lua
+++ b/LogicBeacon/LogicBeacon.lua
@@ -139,7 +139,41 @@ local function GetFollowSignal()
     return 0
 end
 
+local combatErrorSignal = 255
+local errorTimer = 0
+
+local function UpdateCombatErrorSignal(message)
+    if not message or message == "" then
+        return
+    end
+
+    if message == "你需要面对目标" or message == ERR_BADATTACKFACING then
+        combatErrorSignal = 50
+    elseif message == "距离太远" or message == ERR_OUT_OF_RANGE then
+        combatErrorSignal = 100
+    elseif message == "目标不在视野中" or message == ERR_NOT_IN_LOS then
+        combatErrorSignal = 150
+    elseif message == "法术还没准备好" or message == "技能还没有准备好。" then
+        combatErrorSignal = 200
+    elseif message == "能量不足" or message == "符文能量不足" or message == "没有足够的符文" then
+        combatErrorSignal = 220
+    else
+        return
+    end
+
+    errorTimer = GetTime()
+end
+
+local errorFrame = CreateFrame("Frame")
+errorFrame:RegisterEvent("UI_ERROR_MESSAGE")
+errorFrame:SetScript("OnEvent", function(_, _, _, message)
+    UpdateCombatErrorSignal(message)
+end)
+
 f:SetScript("OnUpdate", function()
+    if combatErrorSignal ~= 255 and (GetTime() - errorTimer > 1.5) then
+        combatErrorSignal = 255
+    end
     -- [1] 锚点：永远纯白 (255, 255, 255)
     pixels[1]:SetColorTexture(1, 1, 1)
 
@@ -200,7 +234,7 @@ f:SetScript("OnUpdate", function()
 
     -- [10] R=跟随信号（0 / 0.5 需补跟随 / 1.0 跟随中）
     local followSig = GetFollowSignal()
-    pixels[10]:SetColorTexture(followSig, 0, 0, 1)
+    pixels[10]:SetColorTexture(followSig, combatErrorSignal / 255, 0, 1)
 end)
 
 -- 可拖动
diff --git a/auto_bot.py b/auto_bot.py
index 39155a3..9d8a53a 100644
--- a/auto_bot.py
+++ b/auto_bot.py
@@ -218,6 +218,8 @@ class AutoBot:
         self.last_attack_scan_time = 0.0
         self.attack_stall_scan_threshold = 2.0
         self.attack_scan_retry_sec = 2.0
+        self.attack_stall_s_hold_sec = 0.5
+        self.min_effective_target_damage_pct = 5
         self._last_mouse_path_scale_signature = None
 
     def execute_disengage_loot(self):
@@ -513,9 +515,13 @@ class AutoBot:
                     hw_ctrl.keyUp('s')
                     self._has_braked_for_target = True
 
-                # 2. 交互逻辑
-                hp_dropped = self.last_target_hp > 0 and target_hp < self.last_target_hp
-                if is_new_target or hp_dropped or self.last_target_damage_time is None:
+                # 2. 只有超过 5% 的明显掉血才算“新的有效掉血”
+                hp_drop_amount = max(0, self.last_target_hp - target_hp)
+                significant_hp_dropped = (
+                    self.last_target_hp > 0
+                    and hp_drop_amount > self.min_effective_target_damage_pct
+                )
+                if is_new_target or significant_hp_dropped or self.last_target_damage_time is None:
                     self.last_target_damage_time = current_time
 
                 if (
@@ -524,8 +530,9 @@ class AutoBot:
                     and (current_time - self.last_target_damage_time) >= self.attack_stall_scan_threshold
                     and (current_time - self.last_attack_scan_time) >= self.attack_scan_retry_sec
                 ):
-                    if self.mouse_scan_attack_target():
-                        self.last_target_damage_time = current_time
+                    hw_ctrl.keyDown('s')
+                    time.sleep(self.attack_stall_s_hold_sec)
+                    hw_ctrl.keyUp('s')
                     self.last_attack_scan_time = current_time
                 self.last_target_hp = target_hp
                 if state['combat']:
diff --git a/auto_bot_move.py b/auto_bot_move.py
index e11bdd0..c10d41b 100644
--- a/auto_bot_move.py
+++ b/auto_bot_move.py
@@ -273,6 +273,8 @@ class AutoBotMove:
         self.last_attack_scan_time = 0.0
         self.attack_stall_scan_threshold = 2.0
         self.attack_scan_retry_sec = 2.0
+        self.attack_stall_s_hold_sec = 0.5
+        self.min_effective_target_damage_pct = 5
         self._last_mouse_path_scale_signature = None
         # stop_check: 返回 True 表示需要立即停止（用于中断阻塞中的后勤/路线导航）
         self._stop_check = stop_check if callable(stop_check) else (lambda: False)
@@ -698,9 +700,13 @@ class AutoBotMove:
                         hw_ctrl.keyUp('s')
                         self._has_braked_for_target = True
                     
-                    # 2. 交互键（KEY_LOOT）按键策略：
-                    hp_dropped = self.last_target_hp > 0 and target_hp < self.last_target_hp
-                    if is_new_target or hp_dropped or self.last_target_damage_time is None:
+                    # 2. 只有超过 5% 的明显掉血才算“新的有效掉血”
+                    hp_drop_amount = max(0, self.last_target_hp - target_hp)
+                    significant_hp_dropped = (
+                        self.last_target_hp > 0
+                        and hp_drop_amount > self.min_effective_target_damage_pct
+                    )
+                    if is_new_target or significant_hp_dropped or self.last_target_damage_time is None:
                         self.last_target_damage_time = now
 
                     # 目标血量100%且超过2秒没掉血，按交互键尝试选中/攻击
@@ -715,8 +721,9 @@ class AutoBotMove:
                         and (now - self.last_target_damage_time) >= self.attack_stall_scan_threshold
                         and (now - self.last_attack_scan_time) >= self.attack_scan_retry_sec
                     ):
-                        if self.mouse_scan_attack_target():
-                            self.last_target_damage_time = now
+                        hw_ctrl.keyDown('s')
+                        time.sleep(self.attack_stall_s_hold_sec)
+                        hw_ctrl.keyUp('s')
                         self.last_attack_scan_time = now
                     
                     self.last_target_hp = target_hp
diff --git a/game_state.py b/game_state.py
index cb4dd8c..a1cde60 100644
--- a/game_state.py
+++ b/game_state.py
@@ -88,6 +88,22 @@ def _tri_state_label(value, low_mid_high):
     return low_mid_high[2]
 
 
+_COMBAT_ERROR_SIGNALS = (50, 100, 150, 200, 220, 255)
+_COMBAT_ERROR_LABELS = {
+    50: '需转身',
+    100: '距离远',
+    150: '不在视野',
+    200: '技能CD',
+    220: '资源不足',
+    255: '正常',
+}
+
+
+def _combat_error_signal_from_g(channel_byte):
+    """Lua G 通道离散状态码还原为最近的约定值。"""
+    return min(_COMBAT_ERROR_SIGNALS, key=lambda t: abs(t - int(channel_byte)))
+
+
 def format_game_state_line(state):
     """单行状态文字（中文），供 CLI 与 GUI 共用。"""
     death_txt = ('存活', '尸体', '灵魂')[state.get('death_state', 0)]
@@ -108,12 +124,16 @@ def format_game_state_line(state):
         state.get('follow', 0),
         ('未跟随', '需补跟随', '跟随中'),
     )
+    combat_error_txt = state.get('combat_error_label') or _COMBAT_ERROR_LABELS.get(
+        state.get('combat_error_signal', 255), '未知'
+    )
     return (
         f"{hp_part} | "
         f"{combat_txt} {target_txt} | "
         f"空格:{state.get('free_slots', 0)} 耐久:{state.get('durability', 0):.0%} {death_txt} | "
         f"x:{state['x']} y:{state['y']} 朝向:{state['facing']:.1f}° | "
-        f"{flight_txt} {mounted_txt} {flyable_txt} {follow_txt}"
+        f"{flight_txt} {mounted_txt} {flyable_txt} {follow_txt} | "
+        f"战斗信号:{combat_error_txt}"
     )
 
 
@@ -213,6 +233,8 @@ def parse_game_state():
     # 第 10 像素（Lua pixels[10]）：R=跟随信号
     p10 = get_val(8)
     state['follow'] = _tri_state_from_r(p10[0])
+    state['combat_error_signal'] = _combat_error_signal_from_g(p10[1])
+    state['combat_error_label'] = _COMBAT_ERROR_LABELS.get(state['combat_error_signal'], '未知')
 
     return state