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/同花顺行业概念板块.md

@@ -0,0 +1,116 @@
+# 同花顺行业概念板块
+
+**文档ID**: 259
+**原始链接**: https://tushare.pro/document/2?doc_id=259
+
+---
+
+## 同花顺概念和行业指数
+
+接口：ths_index描述：获取同花顺板块指数。注：数据版权归属同花顺，如做商业用途，请主动联系同花顺，如需帮助请联系微信：waditu_a权限：本接口需有6000积分，单次最大返回5000行数据，一次可提取全部数据，请勿循环提取。
+
+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>指数代码</td>
+</tr>
+<tr>
+<td>exchange</td>
+<td>str</td>
+<td>N</td>
+<td>市场类型A-a股 HK-港股 US-美股</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>N</td>
+<td>指数类型 N-概念指数 I-行业指数 R-地域指数 S-同花顺特色指数 ST-同花顺风格指数 TH-同花顺主题指数 BB-同花顺宽基指数</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>代码</td>
+</tr>
+<tr>
+<td>name</td>
+<td>str</td>
+<td>Y</td>
+<td>名称</td>
+</tr>
+<tr>
+<td>count</td>
+<td>int</td>
+<td>Y</td>
+<td>成分个数</td>
+</tr>
+<tr>
+<td>exchange</td>
+<td>str</td>
+<td>Y</td>
+<td>交易所</td>
+</tr>
+<tr>
+<td>list_date</td>
+<td>str</td>
+<td>Y</td>
+<td>上市日期</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>Y</td>
+<td>N概念指数S特色指数</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+pro = ts.pro_api()
+
+df = pro.ths_index()
+
+```
+
+数据样例
+
+```
+       ts_code     name       count exchange list_date type
+0    885835.TI     参股银行    126        A  20190416    N
+1    885472.TI    上海自贸区     51        A  20130813    N
+2    885788.TI     网络直播     63        A  20180312    N
+3    885881.TI      云办公     29        A  20200203    N
+4    885785.TI     小米概念     91        A  20180306    N
+..         ...      ...    ...      ...       ...  ...
+266  885566.TI      大飞机     58        A  20140519    N
+267  885841.TI  草地贪夜蛾防治     18        A  20190517    N
+268  885760.TI    装配式建筑     50        A  20170918    N
+269  885909.TI     辅助生殖     15        A  20201023    N
+270  885883.TI   医疗废物处理     25        A  20200207    N
+
+```