fix: address additional code review issues

1. Add safe float conversion for change_pct to prevent TypeError
   - Handles string values from data providers
   - Converts to float with fallback to None

2. Update CHANGELOG.md with PR changes
   - Add financial data and dividend metrics to email reports
   - Add sector/board information with change percentage
   - Support HK and US market sector data
   - Fix board lookup when ranking API transiently fails
   - Remove incorrect dividend ratio field mapping
   - Fix Chinese character garble in logs
   - Archive completed OpenSpec changes

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: suan baby

docs/CHANGELOG.md

@@ -11,6 +11,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 <!-- 新条目格式：- [类型] 描述（类型取值：新功能/改进/修复/文档/测试/chore）-->
 <!-- 每条独立一行追加到本段末尾，无需分类标题，合并时冲突最小 -->
+- [新功能] 邮件报告新增财务数据和分红送转指标展示
+- [新功能] 邮件报告新增关联板块涨跌幅信息展示
+- [新功能] 邮件报告支持港股和美股的板块数据展示
+- [改进] 板块查询在排名 API 临时失败时仍尝试获取，提升数据可用性
+- [修复] 移除错误的分红比例字段映射，避免收益率计算放大 10 倍
+- [修复] 修复日志中中文乱码问题
+- [文档] 归档已完成的 OpenSpec 变更
 - [新功能] 通知网关新增 ntfy 一等渠道，支持通过 `NTFY_URL` / `NTFY_TOKEN` 推送并接入 Web 测试、路由、Actions 与诊断。
 - [新功能] 通知网关新增 Gotify 一等渠道，支持通过 `GOTIFY_URL` / `GOTIFY_TOKEN` 推送 Markdown 文本并接入 Web 测试、路由、Actions 与诊断。
 - [修复] 收紧 ntfy 结构化校验，避免 URL 编码空白 topic 被误判为有效通知端点。

src/notification.py

@@ -1061,7 +1061,12 @@ def generate_dashboard_report(
                     for board in belong_boards[:5]:
                         if isinstance(board, dict):
                             name = board.get('name', '')
-                            change_pct = board.get('change_pct')
+                            change_pct_raw = board.get('change_pct')
+                            # 安全转换 change_pct 为浮点数
+                            try:
+                                change_pct = float(change_pct_raw) if change_pct_raw is not None else None
+                            except (ValueError, TypeError):
+                                change_pct = None
                             if name:
                                 # 涨跌幅格式化
                                 if change_pct is not None:
@@ -1431,7 +1436,11 @@ def generate_wechat_dashboard(self, results: List[AnalysisResult]) -> str:
                     for board in belong_boards[:5]:
                         if isinstance(board, dict):
                             name = board.get('name', '')
-                            change_pct = board.get('change_pct')
+                            change_pct_raw = board.get('change_pct')
+                            try:
+                                change_pct = float(change_pct_raw) if change_pct_raw is not None else None
+                            except (ValueError, TypeError):
+                                change_pct = None
                             if name:
                                 if change_pct is not None:
                                     change_str = f"{change_pct:+.2f}%"
@@ -1726,7 +1735,11 @@ def generate_single_stock_report(self, result: AnalysisResult) -> str:
             for board in belong_boards[:5]:
                 if isinstance(board, dict):
                     name = board.get('name', '')
-                    change_pct = board.get('change_pct')
+                    change_pct_raw = board.get('change_pct')
+                    try:
+                        change_pct = float(change_pct_raw) if change_pct_raw is not None else None
+                    except (ValueError, TypeError):
+                        change_pct = None
                     price = board.get('price')
                     if name:
                         if change_pct is not None: