feat: multimodal image clients, workspaces, Tushare skill, test fixes

- Replace monolithic image_message_client with HTTP/OCR/legacy modules; tighten OpenAI transport + tool schemas for multimodal downgrade to OCR specialist path.
- Add image/stock workspace prompts (META/SOUL/ROLE_SYSTEM); register experts; tweak specialist agent/direct loop/query_image_attachment.
- Add bundled runtime/skills/tushare-finance (references, api_client, SKILL metadata).
- Document OCR-related env vars; admin chat tweaks; README; weixin_install Ensure-OfficialPluginRuntimeDeps helper.
- Tests: multimodal downgrade + OCR coverage, strict tool pairing in attachment replay guard, workspace contract skips _internal/_system dirs, router/trace/prompt guards.

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

runtime/skills/tushare-finance/reference/接口文档/沪深港通股票列表.md

@@ -0,0 +1,150 @@
+# 沪深港通股票列表
+
+**文档ID**: 398
+**原始链接**: https://tushare.pro/document/2?doc_id=398
+
+---
+
+## 沪深港通股票列表
+
+接口：stock_hsgt，可以通过数据工具调试和查看数据。描述：获取沪深港通股票列表权限：3000积分起提示：每天上午9:20更新，单次请求最大返回2000行数据，可根据类型循环提取,本接口数据从20250812开始
+
+输入参数
+
+<table>
+<thead>
+<tr>
+<th>名称</th>
+<th>类型</th>
+<th>必选</th>
+<th>描述</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>ts_code</td>
+<td>str</td>
+<td>N</td>
+<td>股票代码</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>N</td>
+<td>交易日期（格式：YYYYMMDD）</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>Y</td>
+<td>类型（参考下表）</td>
+</tr>
+<tr>
+<td>start_date</td>
+<td>str</td>
+<td>N</td>
+<td>开始时间</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>N</td>
+<td>结束时间</td>
+</tr>
+</tbody></table>
+类型说明如下：
+
+<table>
+<thead>
+<tr>
+<th>类型</th>
+<th>类型名称</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>HK_SZ</td>
+<td>深股通(港&gt;深)</td>
+</tr>
+<tr>
+<td>SZ_HK</td>
+<td>港股通(深&gt;港)</td>
+</tr>
+<tr>
+<td>HK_SH</td>
+<td>沪股通(港&gt;沪)</td>
+</tr>
+<tr>
+<td>SH_HK</td>
+<td>港股通(沪&gt;港)</td>
+</tr>
+</tbody></table>
+输出参数
+
+<table>
+<thead>
+<tr>
+<th>名称</th>
+<th>类型</th>
+<th>默认显示</th>
+<th>描述</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>ts_code</td>
+<td>str</td>
+<td>Y</td>
+<td>股票代码</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>交易日期</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>Y</td>
+<td>类型</td>
+</tr>
+<tr>
+<td>name</td>
+<td>str</td>
+<td>Y</td>
+<td>股票名称</td>
+</tr>
+<tr>
+<td>type_name</td>
+<td>str</td>
+<td>Y</td>
+<td>类型名称</td>
+</tr>
+</tbody></table>
+接口用法
+
+```
+
+pro = ts.pro_api()
+
+#获取20250813日深股通的股票列表
+df = pro.stock_hsgt(trade_date='20250813',type='HK_SZ')
+
+
+```
+
+数据样例
+
+```
+             ts_code trade_date   type     name type_name
+0    001258.SZ   20250813  HK_SZ     立新能源  深股通(港>深)
+1     00019.HK   20250813  SZ_HK  太古股份公司A  港股通(深>港)
+2    000513.SZ   20250813  HK_SZ     丽珠集团  深股通(港>深)
+3    002044.SZ   20250813  HK_SZ     美年健康  深股通(港>深)
+4    000338.SZ   20250813  HK_SZ     潍柴动力  深股通(港>深)
+..         ...        ...    ...      ...       ...
+995  300206.SZ   20250813  HK_SZ     理邦仪器  深股通(港>深)
+996   02331.HK   20250813  SH_HK       李宁  港股通(沪>港)
+997   01855.HK   20250813  SH_HK     中庆股份  港股通(沪>港)
+998  300726.SZ   20250813  HK_SZ     宏达电子  深股通(港>深)
+999   06127.HK   20250813  SH_HK     昭衍新药  港股通(沪>港)
+
+```