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/港股实时日线.md

@@ -0,0 +1,118 @@
+# 港股实时日线
+
+**文档ID**: 383
+**原始链接**: https://tushare.pro/document/2?doc_id=383
+
+---
+
+## 港股实时日线
+
+接口：rt_hk_k描述：获取港股实时日k线行情，支持按股票代码及股票代码通配符一次性提取全部股票实时日k线行情限量：单次最大可提取5000条数据积分：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>支持通配符方式，e.g. 00001.HK、02*.HK</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>股票代码</td>
+</tr>
+<tr>
+<td>pre_close</td>
+<td>float</td>
+<td>Y</td>
+<td>昨收价</td>
+</tr>
+<tr>
+<td>close</td>
+<td>float</td>
+<td>Y</td>
+<td>收盘价</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（股）</td>
+</tr>
+<tr>
+<td>amount</td>
+<td>float</td>
+<td>Y</td>
+<td>成交额(元)</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+#获取特定股票实时日线
+df = pro.rt_hk_k(ts_code='00001.HK')
+
+#获取今日开盘以来部分港股实时日线
+df = pro.rt_hk_k(ts_code='01*.HK')
+
+```
+
+数据示例
+
+```
+       ts_code  pre_close  close   high   open    low            vol       amount
+0    01508.HK      1.040  1.030  1.050  1.040  1.030  14971000.0  15564320.00
+1    01314.HK      0.210  0.211  0.211  0.210  0.210     40000.0      8420.00
+2    01848.HK      3.940  3.910  3.950  3.940  3.890    300500.0   1176380.00
+3    01150.HK      0.091  0.103  0.106  0.106  0.100     45000.0      4580.00
+4    01875.HK      1.860  1.970  1.970  1.930  1.890    164000.0    316064.00
+..        ...        ...    ...    ...    ...    ...         ...          ...
+746  01653.HK      0.260  0.000  0.000  0.000  0.000         0.0         0.00
+747  01729.HK      5.440  5.790  5.800  5.440  5.380   6778621.0  37845706.87
+748  01608.HK      0.290  0.285  0.290  0.290  0.285    142000.0     41170.00
+749  01247.HK      1.700  1.700  1.750  1.740  1.700    120400.0    206708.00
+750  01878.HK      1.890  1.900  1.950  1.900  1.840    191100.0    362691.00
+
+```