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/指数实时日线.md

@@ -0,0 +1,134 @@
+# 指数实时日线
+
+**文档ID**: 403
+**原始链接**: https://tushare.pro/document/2?doc_id=403
+
+---
+
+接口：rt_idx_k描述：获取交易所指数实时日线行情，支持按代码或代码通配符一次性提取全部交易所指数实时日k线行情积分：本接口是单独开权限的数据，单独申请权限请参考权限列表
+
+### 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>指数代码，支持通配符方式，e.g. 0*.SH、3*.SZ、000001.SH</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>指数代码</td>
+</tr>
+<tr>
+<td>name</td>
+<td>str</td>
+<td>Y</td>
+<td>指数名称</td>
+</tr>
+<tr>
+<td>trade_time</td>
+<td>str</td>
+<td>Y</td>
+<td>交易时间</td>
+</tr>
+<tr>
+<td>close</td>
+<td>float</td>
+<td>Y</td>
+<td>现价</td>
+</tr>
+<tr>
+<td>pre_close</td>
+<td>float</td>
+<td>Y</td>
+<td>昨收</td>
+</tr>
+<tr>
+<td>high</td>
+<td>float</td>
+<td>Y</td>
+<td>最高价</td>
+</tr>
+<tr>
+<td>open</td>
+<td>float</td>
+<td>Y</td>
+<td>开盘价</td>
+</tr>
+<tr>
+<td>low</td>
+<td>float</td>
+<td>Y</td>
+<td>最低价</td>
+</tr>
+<tr>
+<td>vol</td>
+<td>float</td>
+<td>Y</td>
+<td>成交量</td>
+</tr>
+<tr>
+<td>amount</td>
+<td>float</td>
+<td>Y</td>
+<td>成交金额（元）</td>
+</tr>
+</tbody>
+</table>
+### 代码示例
+
+```
+#获取单个指数实时行情
+df = pro.rt_idx_k(ts_code='000001.SH')
+
+#获取多个指数实时行情,以上证综指和深证A指为例
+df = pro.rt_idx_k(ts_code='000001.SH,399107.SZ')
+
+#获取上交所所有指数实时行情，同时指定输出字段
+df = pro.rt_idx_k(ts_code='0*.SH', fields='ts_code,name,close,vol')
+
+```
+
+### 数据结果
+
+```
+       ts_code    name       close           vol
+0    000851.SH  百发100   19517.5514  2.035695e+07
+1    000934.SH    中证金融   6203.0781  6.711314e+07
+2    000010.SH  上证180    9773.2466  1.135439e+08
+3    000065.SH    上证龙头   3527.1942  5.541939e+07
+4    000033.SH    上证材料   3232.1719  2.889464e+07
+..         ...     ...         ...           ...
+195  000888.SH    上证收益   4420.1632  4.787276e+08
+196  000011.SH    基金指数   7103.0192  1.107185e+09
+197  000008.SH    综合指数   3668.1847  1.011677e+08
+198  000075.SH    医药等权   7170.0801  4.000854e+06
+199  000029.SH  180价值    4396.8748  5.572026e+07
+
+```