Align option display precision with OKX and use exchange position history.

Format prices by tickSz, move bid depth/recovery to card end with plain styling, and load option history from OKX positions-history instead of local DB.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/options/templates/options_panel.html

@@ -198,11 +198,10 @@
                                     <th>状态</th>
                                     <th>盈亏</th>
                                     <th>时间</th>
-                                    <th>操作</th>
                                 </tr>
                             </thead>
                             <tbody id="opt-history-tbody">
-                                <tr><td colspan="7" class="muted">加载中…</td></tr>
+                                <tr><td colspan="6" class="muted">加载中…</td></tr>
                             </tbody>
                         </table>
                     </div>
@@ -212,4 +211,4 @@
     </div>
 </div>
 <script src="/static/options_expiry_countdown.js?v=1"></script>
-<script src="/static/options_panel.js?v=23"></script>
+<script src="/static/options_panel.js?v=24"></script>