fix(ui): history query - match PascalCase JSON property names

API 응답이 PascalCase(RecordedAt, Values)인데 프론트엔드가
camelCase(recordedAt, values)로 접근해 데이터 미표시 현상 수정.
- hist.js: recordedAt→RecordedAt, values→Values
- trend.js: consistency fix
- index.html: cache busting 버전 갱신 (20260604→20260611)

src/Hc900Crawler/wwwroot/index.html

@@ -220,7 +220,7 @@
 <script src="/js/core.js?v=20260604"></script>
 <script src="/js/setup.js?v=20260604"></script>
 <script src="/js/pb.js?v=20260604"></script>
-<script src="/js/hist.js?v=20260604"></script>
+<script src="/js/hist.js?v=20260611"></script>
 <script src="/js/t2s.js?v=20260604"></script>
 <script src="/js/fast.js?v=20260604"></script>
 <script src="/js/pid.js?v=20260604"></script>
@@ -229,7 +229,7 @@
 <script src="/js/kbadmin.js?v=20260604"></script>
 <script src="/js/write.js?v=20260604"></script>
 <script src="/js/docs.js?v=20260604"></script>
-<script src="/js/trend.js?v=20260604"></script>
+<script src="/js/trend.js?v=20260611"></script>
 <script src="/js/ff.js?v=20260604"></script>
 <script src="/js/steam.js?v=20260606"></script>
 </body>

src/Hc900Crawler/wwwroot/js/hist.js

@@ -159,7 +159,7 @@ function renderHistoryTable(rows, tNames, interval, baseIntervalSeconds, queryIn
   }
 
   // 시간 간격 조회인 경우 TimeBucket 열 사용
-  const timeColumn = rows[0].timeBucket ? 'timeBucket' : 'recordedAt';
+  const timeColumn = rows[0].timeBucket ? 'timeBucket' : 'RecordedAt';
   
   tbl.innerHTML = `
     <table>
@@ -174,7 +174,7 @@ function renderHistoryTable(rows, tNames, interval, baseIntervalSeconds, queryIn
           <tr>
             <td class="mut" style="white-space:nowrap">${fmtTs(r[timeColumn])}</td>
             ${tNames.map(t => {
-              const raw = r.values?.[t] ?? null;
+              const raw = r.Values?.[t] ?? null;
               const display = raw != null ? esc(String(fmtVal(raw))) : '<span style="color:var(--t3)">—</span>';
               return `<td class="val">${display}</td>`;
             }).join('')}

src/Hc900Crawler/wwwroot/js/trend.js

@@ -356,7 +356,7 @@ async function trQuery() {
         interval, limit: 5000
       });
       rows = (d && d.success !== false) ? (d.rows || []) : [];
-      tk = rows[0]?.timeBucket != null ? 'timeBucket' : 'recordedAt';
+      tk = rows[0]?.timeBucket != null ? 'timeBucket' : 'RecordedAt';
       // 집계가 0행이면(엔드포인트 이슈 등) 원시로 폴백 → 차트 공백 방지
       if (!rows.length) { const r = await rawQuery(); rows = r.rows; tk = r.tk; }
     } else {