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/社融增量(月度).md

@@ -0,0 +1,119 @@
+# 社融增量（月度）
+
+**文档ID**: 310
+**原始链接**: https://tushare.pro/document/2?doc_id=310
+
+---
+
+## 社融数据（月度）
+
+接口：sf_month描述：获取月度社会融资数据限量：单次最大2000条数据，可循环提取积分：需2000积分
+
+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>m</td>
+<td>str</td>
+<td>N</td>
+<td>月份（YYYYMM，下同），支持多个月份同时输入，逗号分隔</td>
+</tr>
+<tr>
+<td>start_m</td>
+<td>str</td>
+<td>N</td>
+<td>开始月份</td>
+</tr>
+<tr>
+<td>end_m</td>
+<td>str</td>
+<td>N</td>
+<td>结束月份</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>month</td>
+<td>str</td>
+<td>Y</td>
+<td>月度</td>
+</tr>
+<tr>
+<td>inc_month</td>
+<td>float</td>
+<td>Y</td>
+<td>社融增量当月值（亿元）</td>
+</tr>
+<tr>
+<td>inc_cumval</td>
+<td>float</td>
+<td>Y</td>
+<td>社融增量累计值（亿元）</td>
+</tr>
+<tr>
+<td>stk_endval</td>
+<td>float</td>
+<td>Y</td>
+<td>社融存量期末值（万亿元）</td>
+</tr>
+</tbody></table>
+接口调用
+
+```
+
+pro = ts.pro_api()
+
+df = pro.sf_month(start_m='201901', end_m='202307')
+
+
+```
+
+数据样例
+
+```
+     month inc_month inc_cumval stk_endval
+0   202307   5282.00  220800.00     365.77
+1   202306  42241.00  215487.00     365.45
+2   202305  15555.00  173246.00     361.42
+3   202304  12253.00  157691.00     359.95
+4   202303  53862.00  145438.00     359.02
+5   202302  31623.00   91576.00     353.97
+6   202301  59953.00   59953.00     350.93
+7   202212  13058.00  320099.00     344.21
+8   202211  19837.00  307041.00     343.19
+9   202210   9134.00  287204.00     341.42
+10  202209  35411.00  278070.00     340.65
+11  202208  24712.00  242659.00     337.22
+12  202207   7785.00  217947.00     334.90
+13  202206  51926.00  210162.00     334.28
+14  202205  28415.00  158236.00     329.20
+15  202204   9327.00  129821.00     326.47
+16  202203  46565.00  120494.00     325.63
+17  202202  12170.00   73929.00     321.12
+18  202201  61759.00   61759.00     320.03
+19  202112  23580.00  313408.00     314.12
+20  202111  25983.00  289828.00     311.90
+21  202110  16176.00  263845.00     309.45
+22  202109  29026.00  247669.00     308.05
+23  202108  29893.00  218643.00     305.29
+24  202107  10752.00  188750.00     302.47
+
+```