fix(telegram+review): 修復 PPT 按鈕無反應 + Code Review 頁面空白

PPT 按鈕：
- telegram_bot_service.py 新增 cmd:* handler，透過 Thread 轉發到
  OpenClaw Flask 內部 API（/bot/internal/cmd）
- openclaw_bot_routes.py 新增 /bot/internal/cmd 端點，背景執行 handle_cmd()

Code Review 頁面：
- get_history() 補回 findings / openclaw_report 欄位
- code_review.html history 項目可點擊，自動載入詳細內容
- poll() 無 active pipeline 時自動顯示最新歷史記錄

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/code_review.html

@@ -367,12 +367,15 @@ function renderStatusBar(state) {
 }
 
 // ── History ───────────────────────────────────────────────────────
+let _historyData = [];
+
 function renderHistory(items) {
+  _historyData = items;
   const el = document.getElementById('historyList');
   if (!items.length) { el.innerHTML = '<div class="empty"><div>尚無歷史記錄</div></div>'; return; }
-  el.innerHTML = items.map(h => {
+  el.innerHTML = items.map((h, idx) => {
     const sev = h.severity_summary || {};
-    return `<div class="hist-item">
+    return `<div class="hist-item" onclick="loadHistoryItem(${idx})" data-idx="${idx}">
       <div style="display:flex;justify-content:space-between">
         <span class="hist-sha">${h.commit_sha}</span>
         <span style="font-size:11px;color:var(--muted)">${h.created_at.slice(0,16).replace('T',' ')}</span>
@@ -389,6 +392,34 @@ function renderHistory(items) {
   }).join('');
 }
 
+function loadHistoryItem(idx) {
+  const h = _historyData[idx];
+  if (!h) return;
+  document.querySelectorAll('.hist-item').forEach((el, i) => {
+    el.style.borderColor = i === idx ? 'var(--blue)' : '';
+  });
+  renderSeverity(h.severity_summary);
+  const files = (h.changed_files||[]).slice(0,5).map(f=>`<code>${f.split('/').pop()}</code>`).join(' ');
+  const more = (h.changed_files||[]).length > 5 ? `<span style="color:var(--muted)">+${h.changed_files.length-5}</span>` : '';
+  document.getElementById('commitInfo').innerHTML = `
+    <div><b>Commit</b> <code>${h.commit_sha}</code></div>
+    <div><b>Branch</b> <code>${h.branch||'?'}</code></div>
+    <div><b>時間</b> ${h.created_at.slice(0,16).replace('T',' ')}</div>
+    <div><b>變更</b> ${files} ${more}</div>`;
+  document.getElementById('pipelineId').textContent = (h.pipeline_id||'').slice(-14);
+  const sBar = document.getElementById('statusBar');
+  sBar.style.display = 'block';
+  sBar.className = 'completed';
+  sBar.innerHTML = `✅ <b>歷史記錄</b> — Commit ${h.commit_sha}${h.auto_fix ? '  🔧 已自動修復' : ''}`;
+  renderFindings(h.findings || []);
+  renderOpenClaw(h.openclaw_report || '');
+  renderEA(h.ea_decision || {}, h.auto_fix || false);
+  for (let i = 1; i <= 5; i++) {
+    const el = document.getElementById('step-' + i);
+    if (el) { el.className = 'step ok'; el.querySelector('.step-num').textContent = '✓'; }
+  }
+}
+
 // ── Main polling loop ─────────────────────────────────────────────
 async function poll() {
   try {
@@ -408,6 +439,11 @@ async function poll() {
     renderCommitInfo(state);
     document.getElementById('pipelineId').textContent = (state.pipeline_id||'').slice(-14);
 
+    // 無 active pipeline 時，自動顯示最新歷史記錄
+    if (!state.status && _historyData.length && !_lastPipelineId) {
+      loadHistoryItem(0);
+    }
+
     // 每 3s 輪詢（running）/ 30s（idle）
     const interval = state.status === 'running' ? 3000 : 30000;
     _polling = setTimeout(poll, interval);