diff --git a/apps/api/src/services/telegram_gateway.py b/apps/api/src/services/telegram_gateway.py
index 6d71fde1..a55e035b 100644
--- a/apps/api/src/services/telegram_gateway.py
+++ b/apps/api/src/services/telegram_gateway.py
@@ -221,9 +221,9 @@ class TelegramMessage:
             signoz_block = f"━━━━━━━━━━━━━━━━━━━\n{self.signoz_metrics.format()}\n"
 
         # HTML 轉義用戶輸入內容，防止 "Can't parse entities" 錯誤
-        safe_resource = html.escape(self.resource_name[:35])
-        safe_root_cause = html.escape(self.root_cause[:100])
-        safe_action = html.escape(self.suggested_action[:80])
+        safe_resource = html.escape(self.resource_name)
+        safe_root_cause = html.escape(self.root_cause)
+        safe_action = html.escape(self.suggested_action)
         safe_downtime = html.escape(self.estimated_downtime)
 
         # 2026-03-29 ogt: AI Token/Cost 顯示
@@ -315,7 +315,7 @@ class TelegramMessage:
             f"🔍 <a href='{signoz_url}'>SignOz Trace</a>"
         )
 
-        return message[:900]  # 900 字元上限 (nemotron 版用 1000，因有額外 tool 區塊)
+        return message[:4096]  # Telegram 硬限制
 
     def format_with_nemotron(self) -> str:
         """
@@ -372,9 +372,9 @@ class TelegramMessage:
             incident_id = f"INC-{self.approval_id[:8].upper()}"
 
         # HTML 轉義
-        safe_resource = html.escape(self.resource_name[:35])
-        safe_root_cause = html.escape(self.root_cause[:100])
-        safe_action = html.escape(self.suggested_action[:80])
+        safe_resource = html.escape(self.resource_name)
+        safe_root_cause = html.escape(self.root_cause)
+        safe_action = html.escape(self.suggested_action)
         safe_downtime = html.escape(self.estimated_downtime)
 
         # AI Provider 顯示
@@ -451,7 +451,7 @@ class TelegramMessage:
             f"⏱️ 停機: {safe_downtime}"
         )
 
-        return message[:1000]
+        return message[:4096]  # Telegram 硬限制
 
 
 # =============================================================================
@@ -561,7 +561,7 @@ class ResourceWarnMessage:
 
         suggestion_block = ""
         if self.suggestion:
-            suggestion_block = f"💡 建議: {html.escape(self.suggestion[:50])}\n"
+            suggestion_block = f"💡 建議: {html.escape(self.suggestion)}\n"
 
         message = (
             f"═══════════════════════════\n"
@@ -1072,17 +1072,17 @@ class InfraAlertMessage:
         """格式化為 Telegram HTML"""
         # 有 note 表示「資訊性提示」，不顯示修復區塊
         if self.note:
-            footer = f"━━━━━━━━━━━━━━━━━━━\n💡 {html.escape(self.note[:150])}\n"
+            footer = f"━━━━━━━━━━━━━━━━━━━\n💡 {html.escape(self.note)}\n"
         elif self.auto_fixed:
-            footer = f"━━━━━━━━━━━━━━━━━━━\n✅ <b>已自動修復</b>\n└ {html.escape(self.fix_action[:100])}\n"
+            footer = f"━━━━━━━━━━━━━━━━━━━\n✅ <b>已自動修復</b>\n└ {html.escape(self.fix_action)}\n"
         else:
-            footer = f"━━━━━━━━━━━━━━━━━━━\n⚠️ <b>需要關注</b>\n└ {html.escape(self.fix_action[:100] or '請確認元件狀態')}\n"
+            footer = f"━━━━━━━━━━━━━━━━━━━\n⚠️ <b>需要關注</b>\n└ {html.escape(self.fix_action or '請確認元件狀態')}\n"
 
         return (
             f"🚨 <b>基礎設施異常</b>\n"
             f"━━━━━━━━━━━━━━━━━━━\n"
             f"⚙️ <b>{html.escape(self.component)}</b>: {html.escape(self.status)}\n"
-            f"📛 影響: {html.escape(self.impact[:150])}\n"
+            f"📛 影響: {html.escape(self.impact)}\n"
             f"{footer}"
         )[:900]
 
@@ -2627,7 +2627,7 @@ class TelegramGateway:
                 lines += [
                     f"",
                     f"🤖 <b>AI 分析</b> ({html.escape(dc.model_used)})",
-                    f"💡 {html.escape(dc.hypothesis[:200])}{'...' if len(dc.hypothesis) > 200 else ''}",
+                    f"💡 {html.escape(dc.hypothesis)}",
                     f"📈 信心: [{confidence_bar}] {dc.confidence:.0%}",
                 ]
                 if dc.probable_root_causes: