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/股权质押统计数据.md

@@ -0,0 +1,130 @@
+# 股权质押统计数据
+
+**文档ID**: 110
+**原始链接**: https://tushare.pro/document/2?doc_id=110
+
+---
+
+## 股权质押统计数据
+
+接口：pledge_stat描述：获取股票质押统计数据限量：单次最大1000积分：用户需要至少500积分才可以调取，具体请参阅积分获取办法
+
+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>end_date</td>
+<td>str</td>
+<td>N</td>
+<td>截止日期</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>TS代码</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>Y</td>
+<td>截止日期</td>
+</tr>
+<tr>
+<td>pledge_count</td>
+<td>int</td>
+<td>Y</td>
+<td>质押次数</td>
+</tr>
+<tr>
+<td>unrest_pledge</td>
+<td>float</td>
+<td>Y</td>
+<td>无限售股质押数量（万）</td>
+</tr>
+<tr>
+<td>rest_pledge</td>
+<td>float</td>
+<td>Y</td>
+<td>限售股份质押数量（万）</td>
+</tr>
+<tr>
+<td>total_share</td>
+<td>float</td>
+<td>Y</td>
+<td>总股本</td>
+</tr>
+<tr>
+<td>pledge_ratio</td>
+<td>float</td>
+<td>Y</td>
+<td>质押比例</td>
+</tr>
+</tbody></table>
+接口使用
+
+```
+pro = ts.pro_api()
+#或者
+#pro = ts.pro_api('your token')
+
+
+df = pro.pledge_stat(ts_code='000014.SZ')
+
+```
+
+或者
+
+```
+
+df = pro.query('pledge_stat', ts_code='000014.SZ')
+
+```
+
+数据示例
+
+```
+             ts_code  end_date  pledge_count  unrest_pledge  rest_pledge  \
+0    000014.SZ  20180928            23          63.16          0.0   
+1    000014.SZ  20180921            24          63.17          0.0   
+2    000014.SZ  20180914            24          63.17          0.0   
+3    000014.SZ  20180907            28          63.69          0.0   
+4    000014.SZ  20180831            28          63.69          0.0   
+5    000014.SZ  20180824            29          64.74          0.0   
+6    000014.SZ  20180817            29          64.74          0.0   
+7    000014.SZ  20180810            29          64.74          0.0   
+8    000014.SZ  20180803            29          64.74          0.0   
+9    000014.SZ  20180727            29          64.74          0.0   
+10   000014.SZ  20180720            29          64.74          0.0   
+11   000014.SZ  20180713            29          64.74          0.0   
+12   000014.SZ  20180706            30          64.77          0.0   
+13   000014.SZ  20180629            30          64.77          0.0   
+14   000014.SZ  20180622            30          64.77          0.0   
+15   000014.SZ  20180615            28          66.50          0.0 
+```