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/东方财富App热榜.md

@@ -0,0 +1,141 @@
+# 东方财富App热榜
+
+**文档ID**: 321
+**原始链接**: https://tushare.pro/document/2?doc_id=321
+
+---
+
+## 东方财富热板
+
+接口：dc_hot描述：获取东方财富App热榜数据，包括A股市场、ETF基金、港股市场、美股市场等等，每日盘中提取4次，收盘后4次，最晚22点提取一次。限量：单次最大2000条，可根据日期等参数循环获取全部数据积分：用户积8000积分可调取使用，积分获取办法请参阅积分获取办法注意：本接口只限个人学习和研究使用，如需商业用途，请自行联系东方财富解决数据采购问题。
+
+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>trade_date</td>
+<td>str</td>
+<td>N</td>
+<td>交易日期</td>
+</tr>
+<tr>
+<td>ts_code</td>
+<td>str</td>
+<td>N</td>
+<td>TS代码</td>
+</tr>
+<tr>
+<td>market</td>
+<td>str</td>
+<td>N</td>
+<td>类型(A股市场、ETF基金、港股市场、美股市场)</td>
+</tr>
+<tr>
+<td>hot_type</td>
+<td>str</td>
+<td>N</td>
+<td>热点类型(人气榜、飙升榜)</td>
+</tr>
+<tr>
+<td>is_new</td>
+<td>str</td>
+<td>N</td>
+<td>是否最新（默认Y，如果为N则为盘中和盘后阶段采集，具体时间可参考rank_time字段，状态N每小时更新一次，状态Y更新时间为22：30）</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>trade_date</td>
+<td>str</td>
+<td>Y</td>
+<td>交易日期</td>
+</tr>
+<tr>
+<td>data_type</td>
+<td>str</td>
+<td>Y</td>
+<td>数据类型</td>
+</tr>
+<tr>
+<td>ts_code</td>
+<td>str</td>
+<td>Y</td>
+<td>股票代码</td>
+</tr>
+<tr>
+<td>ts_name</td>
+<td>str</td>
+<td>Y</td>
+<td>股票名称</td>
+</tr>
+<tr>
+<td>rank</td>
+<td>int</td>
+<td>Y</td>
+<td>排行或者热度</td>
+</tr>
+<tr>
+<td>pct_change</td>
+<td>float</td>
+<td>Y</td>
+<td>涨跌幅%</td>
+</tr>
+<tr>
+<td>current_price</td>
+<td>float</td>
+<td>Y</td>
+<td>当前价</td>
+</tr>
+<tr>
+<td>rank_time</td>
+<td>str</td>
+<td>Y</td>
+<td>排行榜获取时间</td>
+</tr>
+</tbody></table>
+接口示例
+
+```
+
+#获取查询月份券商金股
+df = pro.dc_hot(trade_date='20240415', market='A股市场',hot_type='人气榜',  fields='ts_code,ts_name,rank')
+
+```
+
+数据示例
+
+```
+  ts_code   ts_name  rank
+0   601099.SH     太平洋     1
+1   601995.SH    中金公司     2
+2   002235.SZ    安妮股份     3
+3   601136.SH    首创证券     4
+4   600127.SH    金健米业     5
+..        ...     ...   ...
+95  300675.SZ     建科院    96
+96  601900.SH    南方传媒    97
+97  600280.SH    中央商场    98
+98  300898.SZ    熊猫乳品    99
+99  600519.SH    贵州茅台   100
+
+```
+
+数据来源