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/实时分钟.md

@@ -0,0 +1,137 @@
+# 实时分钟
+
+**文档ID**: 374
+**原始链接**: https://tushare.pro/document/2?doc_id=374
+
+---
+
+## A股实时分钟
+
+接口：rt_min描述：获取全A股票实时分钟数据，包括1~60min限量：单次最大1000行数据，可以通过股票代码提取数据，支持逗号分隔的多个代码同时提取权限：正式权限请参阅权限说明
+
+注：支持股票当日开盘以来的所有历史分钟数据提取，接口名：rt_min_daily（仅支持一个个股票提取，不同同时提取多个）
+
+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>freq</td>
+<td>str</td>
+<td>Y</td>
+<td>1MIN,5MIN,15MIN,30MIN,60MIN （大写）</td>
+</tr>
+<tr>
+<td>ts_code</td>
+<td>str</td>
+<td>Y</td>
+<td>支持单个和多个：600000.SH 或者 600000.SH,000001.SZ</td>
+</tr>
+</tbody></table>
+freq参数说明
+
+<table>
+<thead>
+<tr>
+<th>freq</th>
+<th>说明</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>1MIN</td>
+<td>1分钟</td>
+</tr>
+<tr>
+<td>5MIN</td>
+<td>5分钟</td>
+</tr>
+<tr>
+<td>15MIN</td>
+<td>15分钟</td>
+</tr>
+<tr>
+<td>30MIN</td>
+<td>30分钟</td>
+</tr>
+<tr>
+<td>60MIN</td>
+<td>60分钟</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>time</td>
+<td>None</td>
+<td>Y</td>
+<td>交易时间</td>
+</tr>
+<tr>
+<td>open</td>
+<td>float</td>
+<td>Y</td>
+<td>开盘价</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>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>
+接口用法
+
+```
+
+pro = ts.pro_api()
+
+#获取浦发银行60000.SH的实时分钟数据
+df = pro.rt_min(ts_code='600000.SH', freq='1MIN')
+
+```