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/基金规模.md

@@ -0,0 +1,114 @@
+# 基金规模
+
+**文档ID**: 207
+**原始链接**: https://tushare.pro/document/2?doc_id=207
+
+---
+
+## 基金规模数据
+
+接口：fund_share，可以通过数据工具调试和查看数据。描述：获取基金规模数据，包含上海和深圳ETF基金限量：单次最大提取2000行数据积分：用户需要至少2000积分可以调取，5000积分以上频次较高，具体请参阅积分获取办法
+
+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>TS基金代码</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>N</td>
+<td>交易日期</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>
+<tr>
+<td>market</td>
+<td>str</td>
+<td>N</td>
+<td>市场代码（SH上交所 ，SZ深交所）</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>基金代码，支持多只基金同时提取，用逗号分隔</td>
+</tr>
+<tr>
+<td>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>交易（变动）日期，格式YYYYMMDD</td>
+</tr>
+<tr>
+<td>fd_share</td>
+<td>float</td>
+<td>Y</td>
+<td>基金份额（万）</td>
+</tr>
+</tbody></table>
+代码示例
+
+```
+#初始接口
+pro = ts.pro_api()
+
+#单只基金
+df = pro.fund_share(ts_code='150018.SZ')
+
+#多只基金
+df = pro.fund_share(ts_code='150018.SZ,150008.SZ')
+
+```
+
+数据示例
+
+```
+        ts_code trade_date  fd_share
+0     150018.SZ   20200214  206733.2898
+1     150018.SZ   20200213  209274.0911
+2     150018.SZ   20200212  211859.8666
+3     150018.SZ   20200211  215224.2959
+4     150018.SZ   20200210  216739.3881
+...         ...        ...          ...
+1995  150018.SZ   20111129  319525.0658
+1996  150018.SZ   20111128  317324.2829
+1997  150018.SZ   20111125  317324.2131
+1998  150018.SZ   20111124  316113.2233
+1999  150018.SZ   20111123  314305.3576
+
+```