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/转融券交易汇总(停).md

@@ -0,0 +1,129 @@
+# 转融券交易汇总(停）
+
+**文档ID**: 332
+**原始链接**: https://tushare.pro/document/2?doc_id=332
+
+---
+
+## 转融券交易汇总
+
+接口：slb_sec描述：转融通转融券交易汇总限量：单次最大可以提取5000行数据，可循环获取所有历史积分：2000积分每分钟请求200次，5000积分500次请求
+
+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>trade_date</td>
+<td>str</td>
+<td>N</td>
+<td>交易日期（YYYYMMDD格式，下同）</td>
+</tr>
+<tr>
+<td>ts_code</td>
+<td>str</td>
+<td>N</td>
+<td>股票代码</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>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>交易日期（YYYYMMDD）</td>
+</tr>
+<tr>
+<td>ts_code</td>
+<td>str</td>
+<td>Y</td>
+<td>股票代码</td>
+</tr>
+<tr>
+<td>name</td>
+<td>str</td>
+<td>Y</td>
+<td>股票名称</td>
+</tr>
+<tr>
+<td>ope_inv</td>
+<td>float</td>
+<td>Y</td>
+<td>期初余量(万股)</td>
+</tr>
+<tr>
+<td>lent_qnt</td>
+<td>float</td>
+<td>Y</td>
+<td>转融券融出数量(万股)</td>
+</tr>
+<tr>
+<td>cls_inv</td>
+<td>float</td>
+<td>Y</td>
+<td>期末余量(万股)</td>
+</tr>
+<tr>
+<td>end_bal</td>
+<td>float</td>
+<td>Y</td>
+<td>期末余额(万元)</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+pro = ts.pro_api()
+
+df = pro.slb_sec(trade_date='20240620')
+
+
+```
+
+数据示例
+
+```
+        trade_date   ts_code   name  ope_inv lent_qnt  cls_inv   end_bal
+0      20240620  000001.SZ   平安银行   186.97     1.43   188.40   2004.70
+1      20240620  000002.SZ    万科Ａ  3456.26     3.18  3376.80  24346.73
+2      20240620  000006.SZ   深振业Ａ    17.08     None    17.08     64.56
+3      20240620  000008.SZ   神州高铁    17.07     None    17.07     33.97
+4      20240620  000009.SZ   中国宝安   315.61     0.66   310.56   2822.99
+...         ...        ...    ...      ...      ...      ...       ...
+2249   20240620  688798.SH  XD艾为电    65.35     1.32    63.40   3727.91
+2250   20240620  688800.SH    瑞可达     6.49     None     6.36    191.18
+2251   20240620  688819.SH   天能股份   108.34     1.05   108.44   2717.34
+2252   20240620  688981.SH   中芯国际   303.00    22.45   315.30  15386.64
+2253   20240620  689009.SH   九号公司   259.35     5.72   253.62  10583.56
+
+```