diff --git a/.claude/scheduled_tasks.lock b/.claude/scheduled_tasks.lock
new file mode 100644
index 0000000..1bb6927
--- /dev/null
+++ b/.claude/scheduled_tasks.lock
@@ -0,0 +1 @@
+{"sessionId":"2ac1c12e-84cc-457a-867a-5483881cd12c","pid":79317,"acquiredAt":1775918535843}
\ No newline at end of file
diff --git a/apps/desktop/src/renderer/components/meeting/MeetingChatPanel.tsx b/apps/desktop/src/renderer/components/meeting/MeetingChatPanel.tsx
index de2f485..fb6ccb6 100644
--- a/apps/desktop/src/renderer/components/meeting/MeetingChatPanel.tsx
+++ b/apps/desktop/src/renderer/components/meeting/MeetingChatPanel.tsx
@@ -1,8 +1,8 @@
 // src/renderer/components/meeting/MeetingChatPanel.tsx
 // Phase 15: 회의 상세 페이지 하단 AI 채팅 패널
 
-import { useState, useCallback, useEffect, useRef } from 'react'
-import { Box, TextField, IconButton, LinearProgress, Tooltip } from '@mui/material'
+import { useState, useCallback, useEffect, useRef, useMemo } from 'react'
+import { Box, TextField, IconButton, Tooltip } from '@mui/material'
 import SendIcon from '@mui/icons-material/Send'
 import DeleteSweepIcon from '@mui/icons-material/DeleteSweep'
 import ExpandLessIcon from '@mui/icons-material/ExpandLess'
@@ -21,16 +21,25 @@ interface MeetingChatPanelProps {
 const COLLAPSED_HEIGHT = 40
 const EXPANDED_HEIGHT = 240
 
+/** LLM <think>…</think> 리즈닝 블록 제거 (스트리밍 중 열린 태그 포함) */
+function stripThinkTags(text: string): string {
+  // 완성된 <think>…</think> 블록 제거
+  let result = text.replace(/<think>[\s\S]*?<\/think>/gi, '')
+  // 스트리밍 중 아직 닫히지 않은 <think>… 제거
+  result = result.replace(/<think>[\s\S]*$/gi, '')
+  return result.trim()
+}
+
 // 타이핑 인디케이터 점 3개 애니메이션
 function TypingIndicator(): React.ReactElement {
   return (
-    <Box sx={{ display: 'flex', alignItems: 'center', gap: '3px', px: 1, py: 0.5 }}>
+    <Box sx={{ display: 'flex', alignItems: 'center', gap: '4px', px: 0.5, py: 0.25 }}>
       {[0, 1, 2].map((i) => (
         <Box
           key={i}
           sx={{
-            width: 5,
-            height: 5,
+            width: 4,
+            height: 4,
             borderRadius: '50%',
             bgcolor: d3roPalette.accent.amber,
             animation: 'typing-dot 1.2s infinite',
@@ -131,6 +140,14 @@ export function MeetingChatPanel({ sessionId }: MeetingChatPanelProps): React.Re
     setCollapsed((prev) => !prev)
   }, [])
 
+  // 스트리밍 콘텐츠에서 think 태그 제거한 표시용 텍스트
+  const visibleStreamingContent = useMemo(
+    () => stripThinkTags(streamingContent),
+    [streamingContent],
+  )
+  // think 블록 안에 있는 동안(표시할 텍스트 없음) → 리즈닝 중 표시
+  const isReasoning = streaming && streamingContent.length > 0 && visibleStreamingContent.length === 0
+
   return (
     <Box
       sx={{
@@ -201,41 +218,48 @@ export function MeetingChatPanel({ sessionId }: MeetingChatPanelProps): React.Re
               minHeight: 0,
             }}
           >
-            {messages.map((msg) => (
-              <Box
-                key={`${msg.role}-${msg.timestamp}`}
-                sx={{
-                  display: 'flex',
-                  justifyContent: msg.role === 'user' ? 'flex-end' : 'flex-start',
-                }}
-              >
+            {messages.map((msg) => {
+              const displayContent = msg.role === 'assistant'
+                ? stripThinkTags(msg.content)
+                : msg.content
+              if (!displayContent) return null
+              return (
                 <Box
+                  key={`${msg.role}-${msg.timestamp}`}
                   sx={{
-                    maxWidth: '80%',
-                    px: 1.25,
-                    py: 0.5,
-                    borderRadius: '6px',
-                    fontFamily: d3roFontMono,
-                    fontSize: d3roTypo.compact.size,
-                    lineHeight: 1.5,
-                    bgcolor:
-                      msg.role === 'user'
-                        ? d3roPalette.accent.amberDim
-                        : d3roPalette.bg.elevated,
-                    color: d3roPalette.text.primary,
-                    border: `1px solid ${
-                      msg.role === 'user'
-                        ? d3roPalette.accent.amber
-                        : d3roPalette.border.subtle
-                    }`,
-                    wordBreak: 'break-word',
-                    whiteSpace: 'pre-wrap',
+                    display: 'flex',
+                    justifyContent: msg.role === 'user' ? 'flex-end' : 'flex-start',
                   }}
                 >
-                  {msg.content}
+                  <Box
+                    sx={{
+                      maxWidth: '80%',
+                      px: 1.25,
+                      py: 0.5,
+                      borderRadius: '6px',
+                      fontFamily: d3roFontMono,
+                      fontSize: d3roTypo.compact.size,
+                      lineHeight: 1.5,
+                      bgcolor:
+                        msg.role === 'user'
+                          ? d3roPalette.accent.amberDim
+                          : d3roPalette.bg.elevated,
+                      color: d3roPalette.text.primary,
+                      border: `1px solid ${
+                        msg.role === 'user'
+                          ? d3roPalette.accent.amber
+                          : d3roPalette.border.subtle
+                      }`,
+                      wordBreak: 'break-word',
+                      whiteSpace: 'pre-wrap',
+                      overflow: 'hidden',
+                    }}
+                  >
+                    {displayContent}
+                  </Box>
                 </Box>
-              </Box>
-            ))}
+              )
+            })}
 
             {/* 에러 메시지 */}
             {error && (
@@ -280,24 +304,63 @@ export function MeetingChatPanel({ sessionId }: MeetingChatPanelProps): React.Re
                     border: `1px solid ${d3roPalette.border.subtle}`,
                     wordBreak: 'break-word',
                     whiteSpace: 'pre-wrap',
+                    overflow: 'hidden',
                   }}
                 >
-                  {streamingContent || <TypingIndicator />}
+                  {visibleStreamingContent || (
+                    <Box sx={{ display: 'flex', alignItems: 'center', gap: '6px' }}>
+                      <TypingIndicator />
+                      {isReasoning && (
+                        <PhosphorText
+                          variant="dim"
+                          sx={{
+                            fontSize: d3roTypo.micro.size,
+                            opacity: 0.6,
+                            animation: 'reasoning-pulse 2s ease-in-out infinite',
+                            '@keyframes reasoning-pulse': {
+                              '0%, 100%': { opacity: 0.4 },
+                              '50%': { opacity: 0.8 },
+                            },
+                          }}
+                        >
+                          {t('meeting.chatReasoning')}
+                        </PhosphorText>
+                      )}
+                    </Box>
+                  )}
                 </Box>
               </Box>
             )}
           </Box>
 
-          {/* 스트리밍 진행 표시 */}
+          {/* 스트리밍 진행 표시 — 얇은 accent 라인 */}
           {streaming && (
-            <LinearProgress
+            <Box
               sx={{
-                height: 1,
+                height: 2,
                 flexShrink: 0,
                 bgcolor: d3roPalette.bg.inset,
-                '& .MuiLinearProgress-bar': { bgcolor: d3roPalette.accent.amber },
+                overflow: 'hidden',
+                position: 'relative',
               }}
-            />
+            >
+              <Box
+                sx={{
+                  position: 'absolute',
+                  top: 0,
+                  left: 0,
+                  height: '100%',
+                  width: '40%',
+                  bgcolor: d3roPalette.accent.amber,
+                  borderRadius: 1,
+                  animation: 'chat-progress 1.5s ease-in-out infinite',
+                  '@keyframes chat-progress': {
+                    '0%': { left: '-40%' },
+                    '100%': { left: '100%' },
+                  },
+                }}
+              />
+            </Box>
           )}
 
           {/* 입력 영역 */}
diff --git a/packages/i18n/src/locales/de.json b/packages/i18n/src/locales/de.json
index 6b3687b..da670a6 100644
--- a/packages/i18n/src/locales/de.json
+++ b/packages/i18n/src/locales/de.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Kopiert",
   "meeting.chatCollapse": "Chat einklappen",
   "meeting.chatExpand": "Chat ausklappen",
+  "meeting.chatReasoning": "Denkt nach…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "KI-Polierung fehlgeschlagen",
diff --git a/packages/i18n/src/locales/en.json b/packages/i18n/src/locales/en.json
index e60e727..376295f 100644
--- a/packages/i18n/src/locales/en.json
+++ b/packages/i18n/src/locales/en.json
@@ -510,6 +510,7 @@
   "meeting.copied": "Copied",
   "meeting.chatCollapse": "Collapse Chat",
   "meeting.chatExpand": "Expand Chat",
+  "meeting.chatReasoning": "Reasoning…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI polishing failed",
diff --git a/packages/i18n/src/locales/es.json b/packages/i18n/src/locales/es.json
index 4db9598..2fd16d8 100644
--- a/packages/i18n/src/locales/es.json
+++ b/packages/i18n/src/locales/es.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Copiado",
   "meeting.chatCollapse": "Contraer chat",
   "meeting.chatExpand": "Expandir chat",
+  "meeting.chatReasoning": "Razonando…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "Error al pulir con IA",
diff --git a/packages/i18n/src/locales/fr.json b/packages/i18n/src/locales/fr.json
index 7d2b719..1552da8 100644
--- a/packages/i18n/src/locales/fr.json
+++ b/packages/i18n/src/locales/fr.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Copié",
   "meeting.chatCollapse": "Réduire le chat",
   "meeting.chatExpand": "Agrandir le chat",
+  "meeting.chatReasoning": "Raisonnement…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "Echec du polish IA",
diff --git a/packages/i18n/src/locales/ja.json b/packages/i18n/src/locales/ja.json
index 17f7c0b..25d3ee9 100644
--- a/packages/i18n/src/locales/ja.json
+++ b/packages/i18n/src/locales/ja.json
@@ -285,6 +285,7 @@
   "meeting.copied": "コピーしました",
   "meeting.chatCollapse": "チャットを折り畳む",
   "meeting.chatExpand": "チャットを展開",
+  "meeting.chatReasoning": "推論中…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI磨き上げに失敗しました",
diff --git a/packages/i18n/src/locales/ko.json b/packages/i18n/src/locales/ko.json
index cde26fe..8bb58eb 100644
--- a/packages/i18n/src/locales/ko.json
+++ b/packages/i18n/src/locales/ko.json
@@ -510,6 +510,7 @@
   "meeting.copied": "복사됨",
   "meeting.chatCollapse": "채팅 접기",
   "meeting.chatExpand": "채팅 펼치기",
+  "meeting.chatReasoning": "추론 중…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI 다듬기에 실패했습니다",
diff --git a/packages/i18n/src/locales/pt.json b/packages/i18n/src/locales/pt.json
index 2bf7342..5717aa8 100644
--- a/packages/i18n/src/locales/pt.json
+++ b/packages/i18n/src/locales/pt.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Copiado",
   "meeting.chatCollapse": "Recolher chat",
   "meeting.chatExpand": "Expandir chat",
+  "meeting.chatReasoning": "Raciocinando…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "Falha no polimento de IA",
diff --git a/packages/i18n/src/locales/ru.json b/packages/i18n/src/locales/ru.json
index e484af1..eebbfcb 100644
--- a/packages/i18n/src/locales/ru.json
+++ b/packages/i18n/src/locales/ru.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Скопировано",
   "meeting.chatCollapse": "Свернуть чат",
   "meeting.chatExpand": "Развернуть чат",
+  "meeting.chatReasoning": "Размышляет…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "Ошибка ИИ-полировки",
diff --git a/packages/i18n/src/locales/th.json b/packages/i18n/src/locales/th.json
index 85f4ed6..a4e9c00 100644
--- a/packages/i18n/src/locales/th.json
+++ b/packages/i18n/src/locales/th.json
@@ -285,6 +285,7 @@
   "meeting.copied": "คัดลอกแล้ว",
   "meeting.chatCollapse": "ยุบแชท",
   "meeting.chatExpand": "ขยายแชท",
+  "meeting.chatReasoning": "กำลังคิด…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI ปรับแต่งล้มเหลว",
diff --git a/packages/i18n/src/locales/vi.json b/packages/i18n/src/locales/vi.json
index 2baa5dc..6f53fdd 100644
--- a/packages/i18n/src/locales/vi.json
+++ b/packages/i18n/src/locales/vi.json
@@ -285,6 +285,7 @@
   "meeting.copied": "Đã sao chép",
   "meeting.chatCollapse": "Thu gọn chat",
   "meeting.chatExpand": "Mở rộng chat",
+  "meeting.chatReasoning": "Đang suy luận…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI đánh bóng thất bại",
diff --git a/packages/i18n/src/locales/zh-TW.json b/packages/i18n/src/locales/zh-TW.json
index eca869d..806be39 100644
--- a/packages/i18n/src/locales/zh-TW.json
+++ b/packages/i18n/src/locales/zh-TW.json
@@ -285,6 +285,7 @@
   "meeting.copied": "已複製",
   "meeting.chatCollapse": "收起聊天",
   "meeting.chatExpand": "展開聊天",
+  "meeting.chatReasoning": "推理中…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI潤色失敗",
diff --git a/packages/i18n/src/locales/zh.json b/packages/i18n/src/locales/zh.json
index b81616b..a7e1933 100644
--- a/packages/i18n/src/locales/zh.json
+++ b/packages/i18n/src/locales/zh.json
@@ -285,6 +285,7 @@
   "meeting.copied": "已复制",
   "meeting.chatCollapse": "收起聊天",
   "meeting.chatExpand": "展开聊天",
+  "meeting.chatReasoning": "推理中…",
   "meeting.exportMd": "Markdown (.md)",
   "meeting.exportPdfFmt": "PDF (.pdf)",
   "meeting.polishFailed": "AI润色失败",