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/港股复权因子.md

@@ -0,0 +1,114 @@
+# 港股复权因子
+
+**文档ID**: 401
+**原始链接**: https://tushare.pro/document/2?doc_id=401
+
+---
+
+## 港股复权因子
+
+接口：hk_adjfactor描述：获取港股每日复权因子数据，每天滚动刷新限量：单次最大6000行数据，可以根据日期循环权限：本接口是在开通港股日线权限后自动获取权限，权限请参考权限说明文档
+
+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，下同）</td>
+</tr>
+<tr>
+<td>start_date</td>
+<td>str</td>
+<td>N</td>
+<td>开始日期</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>N</td>
+<td>结束日期</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>cum_adjfactor</td>
+<td>float</td>
+<td>Y</td>
+<td>累计复权因子</td>
+</tr>
+<tr>
+<td>close_price</td>
+<td>float</td>
+<td>Y</td>
+<td>收盘价</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+pro = ts.pro_api()
+
+#获取港股单一股票复权因子
+df = pro.hk_adjfactor(ts_code='00001.HK', start_date='20240101', end_date='20251022')
+
+#获取港股某一日全部股票的复权因子
+df = pro.hk_adjfactor(trade_date='20251031')
+
+```
+
+数据示例
+
+```
+       ts_code trade_date cum_adjfactor close_price
+0     00380.HK   20251031      1.000000    0.150000
+1     00698.HK   20251031      1.000000    4.610000
+2     00865.HK   20251031      1.000000    0.038000
+3     08111.HK   20251031      1.000000    0.068000
+4     00039.HK   20251031      1.000000    0.088000
+...        ...        ...           ...         ...
+4086  01384.HK   20251031      1.000000  113.700000
+4087  02954.HK   20251031      1.000000    0.265000
+4088  03460.HK   20251031      1.000000    7.440000
+4089  83460.HK   20251031      1.000000    6.840000
+4090  09460.HK   20251031      1.000000    0.960000
+
+```