diff --git a/docs/devlog/2026-04-17.md b/docs/devlog/2026-04-17.md
new file mode 100644
index 0000000..16e0867
--- /dev/null
+++ b/docs/devlog/2026-04-17.md
@@ -0,0 +1,5 @@
+# 2026-04-17
+
+| NNN | HH:MM | 작업 설명 | `커밋해시` | 완료 |
+|-------|-------|----------|-----------|----------|
+| 001 | 08:05 | v18 Observer DOM->Markdown 파서 개선(<a> 파싱 포함) 및 노이즈 필터 부작용(코드 블럭 잘림 방지) 해결, User 구문 추출 연동, v0.5.56 배포 | `미정` | ✅ |
diff --git a/docs/devlog/entries/20260417-001.md b/docs/devlog/entries/20260417-001.md
new file mode 100644
index 0000000..614c18b
--- /dev/null
+++ b/docs/devlog/entries/20260417-001.md
@@ -0,0 +1,17 @@
+# DOM Observer 마크다운 구조 복원 및 사용자 메시지 연동 (v0.5.56)
+
+### 목표
+DOM Observer(`observer-script.ts`)가 AI 채팅을 `innerText`로 추출하며 잃어버리는 마크다운 서식을 복원하고, 사용자(User) 메시지도 포착하여 함께 Discord 봇으로 보내기 (#634 이슈).
+
+### 변경 사항
+1. **`convertNodeToMarkdown` 파서 확장**:
+    - AI 채팅창의 DOM Tree를 순회하며 `<h1>`~`<h4>`, `<p>`, `<ul>`, `<ol>`, `<li>`, `<strong>`, `<em>`, `<code>`, `<pre>`, `<blockquote>` 등 대부분의 마크다운 요소를 파싱하는 로직 도입.
+    - 추가로 `<a>` 태그(Link) 속성을 지원하여 `[text](href)` 형태로 복원하도록 개선.
+2. **파괴적인 `cleanLines()` 노이즈 필터 제거**:
+    - 이전에 사용되던 `cleanLines()`가 `}[공백]`이나 `import` 같은 코드를 UI 노이즈로 오인하여 삭제(Drop)하는 심각한 이슈를 발견. 전체 마크다운 문자열에는 해당 필터를 적용하지 않고 정규식을 통해 `Thought for X s` 형태의 메시지만 지우도록 수정.
+3. **User 메시지 대상 추가**:
+    - `scanChatBodies()`의 탐색 Selector에 `.text-ide-message-block-user-color`, `.bg-ide-message-block-user-background` 등을 추가하여 사용자 메시지 블록도 대상에 포함.
+    - 데이터 전송 시 `role: 'user'` 정보를 보내고, `http-bridge.ts`에서 이를 구분하여 헤더를 `🧑‍💻 **[DOM 추출] 사용자 요청**`로 지정해 Discord로 릴레이.
+
+### 결과
+`v0.5.56` VSIX 배포 준비 완료 (v0.5.54/55 빌드는 테스트 과정 중 건너뜀). AG Native에서 확장 설치 캐시를 리셋하거나 직접 VSIX를 설치하면 적용됨.
diff --git a/extension/package.json b/extension/package.json
index b52d02d..580a676 100644
--- a/extension/package.json
+++ b/extension/package.json
@@ -2,7 +2,7 @@
   "name": "gravity-bridge",
   "displayName": "Gravity Bridge",
   "description": "Discord-based unified approval system for Antigravity AI interactions.",
-  "version": "0.5.54",
+  "version": "0.5.56",
   "publisher": "variet",
   "engines": {
     "vscode": "^1.100.0"
diff --git a/extension/src/http-bridge.ts b/extension/src/http-bridge.ts
index beb3409..ec18cfe 100644
--- a/extension/src/http-bridge.ts
+++ b/extension/src/http-bridge.ts
@@ -544,8 +544,10 @@ function _handleChatSnapshot(req: any, res: any, ctx: HttpBridgeContext) {
         try {
             const data = JSON.parse(body);
             if (data.text && typeof ctx.writeChatSnapshot === 'function') {
-                ctx.writeChatSnapshot(`💬 **[DOM 추출] AI 응답**\n\n${data.text}`);
-                ctx.logToFile(`[HTTP] chat snapshot written (${data.text.length} chars)`);
+                const isUser = data.role === 'user';
+                const prefix = isUser ? '🧑‍💻 **[DOM 추출] 사용자 요청**' : '💬 **[DOM 추출] AI 응답**';
+                ctx.writeChatSnapshot(`${prefix}\n\n${data.text}`);
+                ctx.logToFile(`[HTTP] chat snapshot written (${data.text.length} chars, role: ${data.role || 'bot'})`);
             }
             res.writeHead(200, { 'Content-Type': 'application/json' });
             res.end(JSON.stringify({ ok: true }));
diff --git a/extension/src/observer-script.ts b/extension/src/observer-script.ts
index 8a4131e..cc545e3 100644
--- a/extension/src/observer-script.ts
+++ b/extension/src/observer-script.ts
@@ -484,15 +484,69 @@ export function generateApprovalObserverScript(_port: number): string {
   var _lastStepTextSent = false;
   var _lastResponseBlockCount = 0; // track number of response blocks for AG Native
 
+  function convertNodeToMarkdown(node) {
+    if (!node) return '';
+    if (node.nodeType === 3) return node.textContent; // Text node
+    if (node.nodeType !== 1) return ''; // Skip other node types
+    
+    var tag = node.tagName.toLowerCase();
+    
+    // Skip hidden or UI elements
+    if (tag === 'style' || tag === 'script' || tag === 'noscript' || tag === 'button' || tag === 'svg') return '';
+    var cls = '';
+    if (typeof node.className === 'string') cls = node.className;
+    else if (node.className && node.className.baseVal) cls = node.className.baseVal;
+    
+    if (cls && (cls.indexOf('google-symbols') !== -1 || cls.indexOf('material-icons') !== -1 || cls.indexOf('copy') !== -1 || cls.indexOf('codicon') !== -1)) return '';
+
+    var childrenMd = '';
+    for (var i = 0; i < node.childNodes.length; i++) {
+        childrenMd += convertNodeToMarkdown(node.childNodes[i]);
+    }
+
+    switch (tag) {
+        case 'h1': return '\\n# ' + childrenMd.trim() + '\\n';
+        case 'h2': return '\\n## ' + childrenMd.trim() + '\\n';
+        case 'h3': return '\\n### ' + childrenMd.trim() + '\\n';
+        case 'h4': return '\\n#### ' + childrenMd.trim() + '\\n';
+        case 'p': return '\\n' + childrenMd.trim() + '\\n';
+        case 'div': 
+            // Treat specific divs as blocks if they end up behaving like paragraphs
+            if (cls.indexOf('block') !== -1 || cls.indexOf('message') !== -1) return '\\n' + childrenMd.trim() + '\\n';
+            return childrenMd;
+        case 'br': return '\\n';
+        case 'strong':
+        case 'b': return '**' + childrenMd + '**';
+        case 'em':
+        case 'i': return '*' + childrenMd + '*';
+        case 'a': 
+            var href = node.getAttribute('href') || '';
+            return '[' + childrenMd + '](' + href + ')';
+        case 'code': return (node.parentNode && node.parentNode.tagName === 'PRE') ? childrenMd : (String.fromCharCode(96) + childrenMd + String.fromCharCode(96));
+        case 'pre': return '\\n' + String.fromCharCode(96,96,96) + '\\n' + childrenMd.trim() + '\\n' + String.fromCharCode(96,96,96) + '\\n';
+        case 'li': 
+            var prefix = '- ';
+            if (node.parentNode && node.parentNode.tagName.toLowerCase() === 'ol') {
+               var idx = 1;
+               var curr = node.previousSibling;
+               while(curr) { if (curr.nodeType === 1 && curr.tagName.toLowerCase() === 'li') idx++; curr = curr.previousSibling; }
+               prefix = idx + '. ';
+            }
+            return '\\n' + prefix + childrenMd.trim();
+        case 'ul':
+        case 'ol': return '\\n' + childrenMd + '\\n';
+        case 'blockquote': return '\\n> ' + childrenMd.trim().split('\\n').join('\\n> ') + '\\n';
+        default: return childrenMd;
+    }
+  }
+
   function extractCleanStepText(stepEl) {
     if (!stepEl) return '';
 
     // Clone the step element so we can strip UI elements without affecting the DOM
     var clone = stepEl.cloneNode(true);
 
-    // v16: Remove style/script/noscript elements FIRST — AG Native markdown injects <style> blocks
-    // that contain CSS rules (e.g. remark-github-blockquote-alert/alert.css) whose textContent
-    // gets captured as AI response text
+    // v16: Remove style/script/noscript elements FIRST
     var styleEls = clone.querySelectorAll('style, script, noscript, link[rel="stylesheet"]');
     for (var si = 0; si < styleEls.length; si++) {
       if (styleEls[si].parentNode) styleEls[si].parentNode.removeChild(styleEls[si]);
@@ -518,34 +572,34 @@ export function generateApprovalObserverScript(_port: number): string {
 
     // Try to get text from markdown rendering area first
     // AG Native uses .leading-relaxed.select-text, Cascade uses .markdown-body/.prose
-    var mdEl = clone.querySelector('.markdown-body, .prose, [class*="markdown"], [class*="rendered"]');
+    var mdEl = clone.querySelector('.markdown-body, .prose, [class*="markdown"], [class*="rendered"]') || clone;
+
+    // Use our custom DOM-to-Markdown parser instead of innerText
+    var rawText = convertNodeToMarkdown(mdEl).trim();
+
+    // v18 FIX: DO NOT apply cleanLines to full markdown content, it destroys valid code blocks
+    // Safely remove "Thought for X" lines only
+    rawText = rawText.replace(/Thought for \\d+s?/gi, '');
+    rawText = rawText.replace(/Thought for a few seconds/gi, '');
     
-    // v18 FIX: Temporarily attach to DOM to force layout computation for .innerText
-    // Without this, .innerText on unattached node behaves exactly like .textContent (loses block newlines)
-    var container = document.createElement('div');
-    container.style.position = 'absolute';
-    container.style.left = '-9999px';
-    container.style.top = '-9999px';
-    container.style.opacity = '0';
-    container.style.width = '800px';
-    container.appendChild(clone);
-    document.body.appendChild(container);
-
-    var targetEl = mdEl || clone;
-    var rawText = '';
-    try {
-      if (targetEl.innerText && targetEl.innerText.trim().length > 10) {
-        rawText = targetEl.innerText.trim();
-      } else {
-        // Fallback: get all text but filter aggressively
-        rawText = (targetEl.innerText || targetEl.textContent || '').trim();
-      }
-    } finally {
-      if (container.parentNode) container.parentNode.removeChild(container);
+    // Cleanup multiple empty lines
+    var lines = rawText.split('\\n');
+    var finalLines = [];
+    var lastEmpty = false;
+    for (var i = 0; i < lines.length; i++) {
+        var line = lines[i].replace(/\\s+$/, '');
+        if (line.length === 0) {
+            if (!lastEmpty && finalLines.length > 0) {
+                finalLines.push('');
+                lastEmpty = true;
+            }
+        } else {
+            finalLines.push(line);
+            lastEmpty = false;
+        }
     }
-
-    // Apply line-by-line noise filter
-    return cleanLines(rawText).substring(0, 3500);
+    
+    return finalLines.join('\\n').substring(0, 3500);
   }
 
   function scanChatBodies() {
@@ -561,9 +615,8 @@ export function generateApprovalObserverScript(_port: number): string {
     }
 
     if (cv) {
-      // AG Native path: find AI response blocks by class pattern
-      // DOM structure: #conversation > ... > .leading-relaxed.select-text (AI response text)
-      var responseBlocks = cv.querySelectorAll('.leading-relaxed.select-text');
+      // AG Native path: find AI and User response blocks by class pattern
+      var responseBlocks = cv.querySelectorAll('.leading-relaxed.select-text, .text-ide-message-block-user-color, .text-ide-message-block-bot-color, .bg-ide-message-block-user-background');
 
       if (responseBlocks.length > 0) {
         // Process the LAST (most recent) response block
@@ -587,13 +640,21 @@ export function generateApprovalObserverScript(_port: number): string {
         }
 
         var blockText = extractCleanStepText(lastBlock);
-        if (blockText && blockText.length > 30) {
-          // QUALITY CHECK: Skip if the text is mostly short lines (UI artifacts)
-          var lines = blockText.split('\\n').filter(function(l) { return l.trim().length > 0; });
-          var longLines = lines.filter(function(l) { return l.trim().length > 20; });
-          if (longLines.length === 0) {
-            log('AG-Native: skipped (no long lines, likely UI noise)');
-            return;
+        
+        var clsStr = (typeof lastBlock.className === 'string') ? lastBlock.className : '';
+        var isUser = clsStr.indexOf('user-color') !== -1 || clsStr.indexOf('user-background') !== -1 || clsStr.indexOf('user-message') !== -1;
+        var role = isUser ? 'user' : 'bot';
+
+        // Bot messages often start empty and stream in. User messages are usually immediate.
+        if (blockText && (blockText.length > 30 || isUser && blockText.length > 0)) {
+          // QUALITY CHECK: Skip if the text is mostly short lines (UI artifacts), BUT skip this check for user messages
+          if (!isUser) {
+            var lines = blockText.split('\\n').filter(function(l) { return l.trim().length > 0; });
+            var longLines = lines.filter(function(l) { return l.trim().length > 20; });
+            if (longLines.length === 0) {
+              log('AG-Native: skipped (no long lines, likely UI noise)');
+              return;
+            }
           }
 
           // Wait for content to stabilize (3s no change)
@@ -605,22 +666,24 @@ export function generateApprovalObserverScript(_port: number): string {
           }
 
           if (_lastStepTextSent) return;
-          if (Date.now() - _lastStepTextTime < 3000) return; // Still waiting
+          // Bot needs 3s to stabilize, User just needs 500ms
+          var waitTime = isUser ? 500 : 3000;
+          if (Date.now() - _lastStepTextTime < waitTime) return; // Still waiting
 
           // Content is stable — send it
           _lastStepTextSent = true;
           _lastResponseBlockCount = responseBlocks.length;
           lastBlock.dataset.agChatScraped = 'pending';
 
-          log('AG-Native chat relay: blocks=' + responseBlocks.length + ' text=' + blockText.length + ' chars');
-          (function(el, txt, count) {
+          log('AG-Native chat relay [' + role + ']: blocks=' + responseBlocks.length + ' text=' + blockText.length + ' chars');
+          (function(el, txt, count, r) {
             fetch(BASE + '/chat', {
               method: 'POST',
               headers: { 'Content-Type': 'application/json' },
-              body: JSON.stringify({ text: txt, source: 'ag_native_block_' + count, block_index: count })
+              body: JSON.stringify({ text: txt, source: 'ag_native_block_' + count, block_index: count, role: r })
             }).then(function() { el.dataset.agChatScraped = 'true'; log('AG-Native chat sent OK'); })
               .catch(function(e) { el.dataset.agChatScraped = 'false'; log('AG-Native chat send error: ' + e.message); });
-          })(lastBlock, blockText, responseBlocks.length);
+          })(lastBlock, blockText, responseBlocks.length, role);
         }
         return; // AG Native path handled — don't fall through to Cascade path
       }