feat(session-title): 多层级回退标题提取，消除 Dashboard 空标题显示#258
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ThreeFish-AI merged 1 commit intoJun 3, 2026
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- 重构 _extract_session_title 为 4 级逐级回退策略: Level 1: user TEXT 噪声剥离（原有逻辑不变） Level 2: TOOL_RESULT 文本截取 → '[Tool output] <snippet>' Level 3: IMAGE 计数 → '[1 Image]' / '[N Images]' Level 4: 元数据兜底 → '[Tool call] Bash, Read' / '[Session] model' - 噪声标签白名单新增 artifactMetadata、thinking - 新增 update_empty_session_title 延迟补写机制， 非首次请求也可为空标题 session 回填 - 补充 30 个测试用例覆盖全部回退级别与新噪声标签 🤖 Generated with [Claude Code](https://github.com/claude), [CodeX](https://openai.com), [Gemini](https://github.com/apps/gemini-code-assist) Co-Authored-By: Aurelius Huang<threefish.ai@gmail.com>
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问题
Dashboard Session 列表中，部分来自 Claude Code 的 Session 其 title 显示为 en-dash
–（前端对空标题的兜底展示）。空标题源于_extract_session_title()仅从role=user + type=TEXT的消息中提取文本，经噪声标签剥离后若为空便无果而终，且标题为INSERT OR IGNORE写入一次、永不更新。改动
多层级回退标题提取：重构
_extract_session_title()为 4 级逐级回退策略，任一级别命中即返回："[Tool output] <snippet>""[1 Image]"/"[N Images]""[Tool call] Bash, Read"/"[Session] claude-opus-4-8"噪声标签白名单增补：
_NOISE_TAG_PATTERN新增artifactMetadata（CC 产物上下文）和thinking（CC 内联推理标签）。延迟标题补写：新增
update_empty_session_title()方法（WHERE title =条件保证仅覆盖空标题），非首次请求也会尝试为空标题 session 回填，保持幂等性。测试覆盖：新增 30 个测试用例，覆盖全部回退级别、新噪声标签、各辅助函数及集成级联场景。全量 1575 个测试通过，无回归。
涉及文件
src/coding/proxy/routing/executor.py— 核心回退逻辑 + 噪声标签扩展 + 延迟补写调用src/coding/proxy/logging/db.py— 新增update_empty_session_title()src/coding/proxy/routing/usage_recorder.py— 委托层新增对应方法tests/test_router_executor.py— 30 个新测试用例