fix: infoharbor_ex.code 存在但不可读时回退占位符，不中断同步#44
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SMB 挂载下运行中的通达信会锁定 hq_cache 文件（EPERM）， _load_real_names 只兜了文件缺失，read_text 抛 OSError 直接 中断 daily/minutes 同步。现与缺失场景同样降级处理。 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This was referenced Jul 7, 2026
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* feat: 股本/上市日期入库 + 换手率支持 (#45, closes #1) - stock_info 新增 zgb/ltag（万股）、capital_date/list_date， 来自 base.dbf（ZGB/LTAG/GXRQ/SSDATE），缺失/不可读降级 NULL - 换手率(%) = daily_data.volume / stock_info.ltag（手 与 万股 单位差恰好抵消；实测平安 0.547%/茅台 0.328% 与行情软件同量级） - save_stock_info 改单事务快照替换（append 重跑撞 code 唯一约束） - parse_base_dbf 通用化（按列名取值），parse_base_dbf_dy 改为薄封装 - blocks 四链文件读取统一补缺失/不可读降级（#44 同款场景） - 迁移脚本 migrate_stock_info_capital.sql；测试 +4（含目录冒充文件 触发 OSError 的跨平台降级测试） Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * docs: 换手率 FAQ/SQL 与股本列说明（README/AGENTS/skill）(#45) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix: _try_parse 补捕获 ValueError + 快照替换测试（review 修复） - blocks 链的格式异常（如 base.dbf 缺列）改为单链降级， 不再传播丢弃已收集的其他链结果 - 测试 +2：缺列 DBF 仅地区链降级 / save_stock_info 快照替换与失败回滚 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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问题
#43 引入的
_load_real_names()只处理了名称文件缺失的场景（exists()为假 → 警告 + 占位符回退）。当文件存在但不可读时——实测场景：SMB 挂载会话劣化返回 EPERM；Windows 端通达信运行中锁定 hq_cache 亦同——read_text()抛出的 OSError 无人捕获，直接中断整个 daily/minutes 同步。股票名称是可选增强，daily/minutes 同步仅用
get_stock_list()枚举代码，不依赖名称，不应因此失败。修复
读取包上
try/except OSError，与文件缺失走同一条降级路径：警告日志 + 返回空 dict（get_stock_list回退占位符命名）。测试
test_fallback_placeholder_when_file_unreadable：chmod 000 模拟不可读 → 回退占位符不抛异常（Windows 上 chmod 权限位无效，skipif跳过）pytest tests/test_reader.py10 passed🤖 Generated with Claude Code