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/主营业务构成.md

@@ -0,0 +1,133 @@
+# 主营业务构成
+
+**文档ID**: 81
+**原始链接**: https://tushare.pro/document/2?doc_id=81
+
+---
+
+## 主营业务构成
+
+接口：fina_mainbz描述：获得上市公司主营业务构成，分地区和产品两种方式权限：用户需要至少2000积分才可以调取，具体请参阅积分获取办法，单次最大提取100行，总量不限制，可循环获取。提示：当前接口只能按单只股票获取其历史数据，如果需要获取某一季度全部上市公司数据，请使用fina_mainbz_vip接口（参数一致），需积攒5000积分。
+
+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>Y</td>
+<td>股票代码</td>
+</tr>
+<tr>
+<td>period</td>
+<td>str</td>
+<td>N</td>
+<td>报告期(每个季度最后一天的日期,比如20171231表示年报)</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>N</td>
+<td>类型：P按产品 D按地区 I按行业（请输入大写字母P或者D）</td>
+</tr>
+<tr>
+<td>start_date</td>
+<td>str</td>
+<td>N</td>
+<td>报告期开始日期</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>N</td>
+<td>报告期结束日期</td>
+</tr>
+</tbody></table>
+输出参数
+
+<table>
+<thead>
+<tr>
+<th>名称</th>
+<th>类型</th>
+<th>描述</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>ts_code</td>
+<td>str</td>
+<td>TS代码</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>报告期</td>
+</tr>
+<tr>
+<td>bz_item</td>
+<td>str</td>
+<td>主营业务来源</td>
+</tr>
+<tr>
+<td>bz_sales</td>
+<td>float</td>
+<td>主营业务收入(元)</td>
+</tr>
+<tr>
+<td>bz_profit</td>
+<td>float</td>
+<td>主营业务利润(元)</td>
+</tr>
+<tr>
+<td>bz_cost</td>
+<td>float</td>
+<td>主营业务成本(元)</td>
+</tr>
+<tr>
+<td>curr_type</td>
+<td>str</td>
+<td>货币代码</td>
+</tr>
+<tr>
+<td>update_flag</td>
+<td>str</td>
+<td>是否更新</td>
+</tr>
+</tbody></table>
+代码示例
+
+```
+
+pro = ts.pro_api()
+
+df = pro.fina_mainbz(ts_code='000627.SZ', type='P')
+
+```
+
+获取某一季度全部股票数据
+
+```
+
+df = pro.fina_mainbz_vip(period='20181231', type='P' ,fields='ts_code,end_date,bz_item,bz_sales')
+
+```
+
+数据样例
+
+```
+     ts_code  end_date    bz_item       bz_sales       bz_profit bz_cost curr_type
+0  000627.SZ  20171231    其他产品      1.847507e+08      None    None       CNY
+1  000627.SZ  20171231    其他主营业务  1.847507e+08      None    None       CNY
+2  000627.SZ  20171231    聚丙烯        6.629111e+07      None    None       CNY
+3  000627.SZ  20171231    原料药产品    2.685909e+08      None    None       CNY
+4  000627.SZ  20171231    保险业务      5.288595e+10      None    None       CNY
+
+```