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/通达信板块信息.md

@@ -0,0 +1,134 @@
+# 通达信板块信息
+
+**文档ID**: 376
+**原始链接**: https://tushare.pro/document/2?doc_id=376
+
+---
+
+## 通达信板块信息
+
+接口：tdx_index描述：获取通达信板块基础信息，包括概念板块、行业、风格、地域等限量：单次最大1000条数据，可根据日期参数循环提取权限：用户积累6000积分可调取，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>板块代码：xxxxxx.TDX</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>idx_type</td>
+<td>str</td>
+<td>N</td>
+<td>板块类型：概念板块、行业板块、风格板块、地区板块</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>板块代码</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>交易日期</td>
+</tr>
+<tr>
+<td>name</td>
+<td>str</td>
+<td>Y</td>
+<td>板块名称</td>
+</tr>
+<tr>
+<td>idx_type</td>
+<td>str</td>
+<td>Y</td>
+<td>板块类型</td>
+</tr>
+<tr>
+<td>idx_count</td>
+<td>int</td>
+<td>Y</td>
+<td>成分个数</td>
+</tr>
+<tr>
+<td>total_share</td>
+<td>float</td>
+<td>Y</td>
+<td>总股本(亿)</td>
+</tr>
+<tr>
+<td>float_share</td>
+<td>float</td>
+<td>Y</td>
+<td>流通股(亿)</td>
+</tr>
+<tr>
+<td>total_mv</td>
+<td>float</td>
+<td>Y</td>
+<td>总市值(亿)</td>
+</tr>
+<tr>
+<td>float_mv</td>
+<td>float</td>
+<td>Y</td>
+<td>流通市值(亿)</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+#获取通达信2025年5月13日的概念板块列表
+df = pro.tdx_index(trade_date='20250513', fields='ts_code,name,idx_type,idx_count')
+
+
+```
+
+数据示例
+
+```
+    ts_code           name     idx_type  idx_count
+0    880559.TDX   要约收购     风格板块          6
+1    880728.TDX   航运概念     概念板块         64
+2    880355.TDX   日用化工     行业板块         20
+3    880423.TDX   酒店餐饮     行业板块          9
+4    880875.TDX   中小银行     风格板块         28
+..          ...    ...      ...        ...
+477  880528.TDX  军工信息化     概念板块         99
+478  880868.TDX   高贝塔值     风格板块        100
+479  880430.TDX     航空     行业板块         52
+480  880431.TDX     船舶     行业板块         12
+481  880914.TDX   军贸概念     概念板块         25
+
+```