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/每日停复牌信息.md

@@ -0,0 +1,131 @@
+# 每日停复牌信息
+
+**文档ID**: 214
+**原始链接**: https://tushare.pro/document/2?doc_id=214
+
+---
+
+## 每日停复牌信息
+
+接口：suspend_d更新时间：不定期描述：按日期方式获取股票每日停复牌信息
+
+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>N</td>
+<td>股票代码(可输入多值)</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>N</td>
+<td>交易日日期</td>
+</tr>
+<tr>
+<td>start_date</td>
+<td>str</td>
+<td>N</td>
+<td>停复牌查询开始日期</td>
+</tr>
+<tr>
+<td>end_date</td>
+<td>str</td>
+<td>N</td>
+<td>停复牌查询结束日期</td>
+</tr>
+<tr>
+<td>suspend_type</td>
+<td>str</td>
+<td>N</td>
+<td>停复牌类型：S-停牌,R-复牌</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>TS代码</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>停复牌日期</td>
+</tr>
+<tr>
+<td>suspend_timing</td>
+<td>str</td>
+<td>Y</td>
+<td>日内停牌时间段</td>
+</tr>
+<tr>
+<td>suspend_type</td>
+<td>str</td>
+<td>Y</td>
+<td>停复牌类型：S-停牌，R-复牌</td>
+</tr>
+</tbody></table>
+接口用法
+
+```
+
+pro = ts.pro_api()
+
+#提取2020-03-12的停牌股票
+df = pro.suspend_d(suspend_type='S', trade_date='20200312')
+
+```
+
+数据样例
+
+```
+        ts_code suspend_type trade_date suspend_timing
+0   000029.SZ            S     20200312           None
+1   000502.SZ            S     20200312           None
+2   000939.SZ            S     20200312           None
+3   000977.SZ            S     20200312           None
+4   000995.SZ            S     20200312           None
+5   002260.SZ            S     20200312           None
+6   002450.SZ            S     20200312           None
+7   002604.SZ            S     20200312           None
+8   300028.SZ            S     20200312           None
+9   300104.SZ            S     20200312           None
+10  300216.SZ            S     20200312           None
+11  300592.SZ            S     20200312           None
+12  300819.SZ            S     20200312    09:30-10:00
+13  300821.SZ            S     20200312    09:30-10:00
+14  600074.SH            S     20200312           None
+15  600145.SH            S     20200312           None
+16  600228.SH            S     20200312           None
+17  600310.SH            S     20200312           None
+18  600610.SH            S     20200312           None
+19  600745.SH            S     20200312           None
+20  600766.SH            S     20200312           None
+21  600891.SH            S     20200312           None
+22  601127.SH            S     20200312           None
+23  601162.SH            S     20200312           None
+24  603002.SH            S     20200312           None
+25  603399.SH            S     20200312           None
+```