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/实时成交(爬虫).md

@@ -0,0 +1,111 @@
+# 实时成交（爬虫）
+
+**文档ID**: 316
+**原始链接**: https://tushare.pro/document/2?doc_id=316
+
+---
+
+## 实时成交数据(爬虫版)
+
+接口：realtime_tick，由于采集和拼接当日以来的成交全历史，因此接口提取数据时需要一定时间，请耐心等待。请将tushare升级到1.3.3版本以上。描述：本接口是tushare org版实时接口的顺延，数据来自网络，且不进入tushare服务器，属于爬虫接口，数据包括该股票当日开盘以来的所有分笔成交数据。权限：0积分完全开放，但需要有tushare账号，如果没有账号请先注册。说明：由于该接口是纯爬虫程序，跟tushare服务器无关，因此tushare不对数据内容和质量负责。数据主要用于研究和学习使用，如做商业目的，请自行解决合规问题。
+
+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，需按tushare<a href="https://tushare.pro/document/2?doc_id=14">股票代码标准</a>输入，比如：000001.SZ表示平安银行，600000.SH表示浦发银行，单次只能输入一个股票</td>
+</tr>
+<tr>
+<td>src</td>
+<td>str</td>
+<td>N</td>
+<td>数据源 （sina-新浪 dc-东方财富，默认sina）</td>
+</tr>
+</tbody></table>
+输出参数
+
+<table>
+<thead>
+<tr>
+<th>名称</th>
+<th>类型</th>
+<th>描述</th>
+</tr>
+</thead>
+<tbody><tr>
+<td>time</td>
+<td>str</td>
+<td>交易时间</td>
+</tr>
+<tr>
+<td>price</td>
+<td>float</td>
+<td>现价</td>
+</tr>
+<tr>
+<td>change</td>
+<td>float</td>
+<td>价格变动</td>
+</tr>
+<tr>
+<td>volume</td>
+<td>int</td>
+<td>成交量（单位：手）</td>
+</tr>
+<tr>
+<td>amount</td>
+<td>int</td>
+<td>成交金额（元）</td>
+</tr>
+<tr>
+<td>type</td>
+<td>str</td>
+<td>类型：买入/卖出/中性</td>
+</tr>
+</tbody></table>
+接口用法
+
+```
+
+import tushare as ts
+
+#设置你的token，登录tushare在个人用户中心里拷贝
+ts.set_token('你的token')
+
+#sina数据
+df = ts.realtime_tick(ts_code='600000.SH')
+
+
+#东财数据
+df = ts.realtime_tick(ts_code='600000.SH', src='dc')
+
+```
+
+数据样例
+
+```
+      TIME      PRICE  CHANGE  VOLUME   AMOUNT TYPE
+0     09:25:01   6.57   -0.01     429   281853   卖盘
+1     09:30:01   6.56   -0.01      42    27552   卖盘
+2     09:30:04   6.58    0.02      57    37597   买盘
+3     09:30:07   6.57   -0.01      61    40077   卖盘
+4     09:30:10   6.58    0.01     867   569936   买盘
+...        ...    ...     ...     ...      ...  ...
+3749  14:56:40   6.58   -0.02     112    73696   卖盘
+3750  14:56:46   6.60    0.02      64    42240   买盘
+3751  14:56:49   6.60    0.00      11     7260   买盘
+3752  14:56:52   6.60    0.00      18    11880   买盘
+3753  15:00:01   6.58   -0.02    2107  1386406   买盘
+
+```