[BigDataDZ]

Goal And Delivered Outcome

On Windows, a protected path with a long alphabetic prefix can stall ordinary path redaction when a candidate nearly matches it. The regex lists both upper- and lowercase literals inside IGNORECASE; each letter therefore adds equivalent backtracking branches. The real disposable research backend's per-Goal status request exceeded a 14-second deadline in this owner.

Keep one literal for one-character case mappings, whose alternatives IGNORECASE already recognizes. Preserve explicit multicharacter Unicode mappings, every encoded UTF-8 spelling and streaming-prefix options. No privacy rule, protected-root boundary, source authority or output policy is relaxed.

• Basis: reproduced native Windows status failure, sampled owning-process profile and controlled immutable-baseline helper intervention.
• Intended base: main; source baseline f094b2cfb2acde7a4a0d4d875bba52f64ac31ba9. No issue closeout claimed.
• Placement: existing Python presentation/privacy encoding adapter in loopx/chat.py; no new capability, protocol vocabulary or parallel decision owner.

Author Declaration

Written by: model_agent (OpenAI Codex), under the author's direction. Implemented against the existing chat path-redaction and streaming contracts at the baseline above. Accepted result: preserve confidentiality and supported aliases while removing the demonstrated redundant-case backtracking bottleneck.

Validation

Tested revision: d60c904148b12b6afbd3dfa680bf2579fbbe118d. Run state: finished. Inputs: synthetic. Native Windows / CPython 3.12.10; interpreter and source provenance verified.

• New isolated 32-letter near-root regression: unchanged baseline exceeds its 20-second watchdog; corrected batch and streamed outputs complete with the expected private-path replacement. This is a hang guard, not a claimed latency budget.
• Full path-privacy suite 67 passed; adjacent response parsing 18 passed. Explicit Unicode cases retain original/lowercase/multicharacter uppercase and percent-encoded aliases.
• Independent author-side reviewer reran all 67 privacy tests and checked all 2,927 cased characters in this Python Unicode database: removed single-character alternatives remain matched. No actionable blocker found; this does not prove universal regex complexity bounds.
• Same 22-letter near-root workload, three uninstrumented samples per arm: source-pinned primary rerun median 1.437s → 0.00363s; independent source-qualified rerun 0.815s → 0.000393s. These are local synthetic measurements, not production percentiles. A separate Pyinstrument 5.1.3 capture identifies the existing redaction call as the hotspot; sampled weights are not used as latency measurements. The optional profiler was isolated in ignored local tooling.
• Real production HTTP status owner with disposable canonical SQLite research fixtures: baseline-helper intervention times out after 14s; corrected request returns 200 in about 215ms. Directory reads remain successful; final source-byte readback reports unchanged captures and zero mutation attempts. No model dispatch occurs.
• Full packaged research-history browser remains unqualified: an own-source retry fails during fixture startup with PackUnavailable(source_changed), before target navigation and final browser readback. This separate gap was not repaired or hidden.
• Ruff, whitespace, bilingual RFC diff and semantic advisory pass. No supported new vocabulary carrier; the advisory's static limits remain.

Reproduce the durable semantic checks using a compatible checkout test environment:

python -m pytest -q tests/test_chat_path_redaction.py tests/test_chat_response_parsing.py

Scope And Continuation

Frontend/Lark/CLI product interfaces and presentation are unchanged; the existing HTTP readback exercises the production consumer. UI impact: none. The bounded future-facing pass reuses the shared character-atom helper without another module or cache. Shared-authority RFC fixture impact: N/A; no store routing or transition rules change.

Current-head CI and maintainer review remain pending. Live workloads, other Python/Unicode versions, sustained latency and the full browser scenario are not qualified. No live Goal, provider/model turn, global upgrade or self-merge. DCO signed; raw profiles, fixtures and logs stay private.

[BigDataDZ]

Follow-through on the disclosed Windows browser-fixture gap: #7324 now proposes the owning fixture repair, preserving exact UTF-8 source bytes and using the existing native synthetic-provider launcher. Production hash/excerpt checks remain strict; its real HTTP/store/provider tests pass with UTF-8 mode disabled.

This does not change or qualify #7319's current head. With the fixture repair applied in its own worktree, the full browser advances beyond the original source/launch errors but still times out on a later home-card assertion. The original real-HTTP evidence and privacy tests for this PR remain separate from full browser acceptance.

[loopx-agent]

Reviewer: model_agent | gpt-6.1-sol | OpenAI | runtime_reported | reasoning_effort=max

未发现阻塞问题。评审对象：d60c904148b12b6afbd3dfa680bf2579fbbe118d。

动机

使用 Chat 或状态页读取含 Windows 路径诊断的用户，会遇到接近受保护根目录的长字母路径。旧版会在重复大小写分支中长时间回溯，状态读取无法及时返回；新版应及时返回，并继续隐藏本机目录、保留允许的项目内相对文件名。独立同输入对照中，旧版长前缀超过看门狗，新版批量、分块流式和真实 HTTP 状态处理均返回预期脱敏结果。本次只修复展示层的这一个卡顿来源，不改变读写权限，也不宣称完整浏览器、原生 Windows 环境或长期生产延迟已经验收。

改动思路

局部字符备选去重即可修复已复现卡顿；无需新增缓存、协议或第二个脱敏 owner。本 PR 仅改变 Windows 路径正则中的单字符大小写备选；流式前缀备选与权限门保持原实现。原有 IGNORECASE 已能识别单字符大小写，把它们再次并列会为近似但最终不匹配的路径反复增加分支。保留原字符和真正展开成多个字符的映射，同时保留每种 UTF-8 百分号编码，能够在既有隐私 owner 内完成修复。正常采集、权限、状态机和模型执行没有新增入口。

具体改动

依据 docs/guides/personal-workspace-user-guide.md，规格版本 f094b2cfb2acde7a4a0d4d875bba52f64ac31ba9，逐项核对 问答中的等待与失败：项目内相对文件名可读、私有子目录和其他机器路径隐藏、状态/提议/权限门完整脱敏、展示不授予读写权限，均由本次对照覆盖。

关键代码讲解

• _root_character_atoms 只收敛最终正则中的重复单字符备选；用于流式前缀判断的 options 保持原内容，多字符大小写和编码别名仍显式保留。
• _local_path_pattern 继续组合根边界、分隔符和通用私有路径兜底；近似根输入应当走兜底，而不是无限探索等价大小写分支。
• VisibleResponseStreamFilter 保持 feed/finish 的原有路径前缀保护；新测试用独立子进程隔离潜在卡死，并补充多字符 Unicode 大小写及百分号别名。

独立验证使用同一 CPython 3.12.15：旧基线原测试 81 过，当前隐私与响应解析 85 过；72 行批量/回答/三处分块输出逐值相同，2,927 个有大小写字符的 11,770 个别名检查无遗漏。32 字母近似根在旧源码超过 20 秒看门狗，新源码批量和流式返回正确。实际状态 HTTP handler 的受控采集场景在旧源码超过 8 秒看门狗，新源码返回 200 和预期脱敏 JSON。

对主干的风险

主要风险是错误去重导致 Unicode/编码别名失配或私有子目录泄漏，上述正反输入覆盖了这一方向。22 字母同输入、一次预热后三次串行测量的本地中位数约为 0.319684 秒到 0.000208 秒；这是批量加分块流式的合成测量，不是生产分位数、Windows 实测或完整费用。没有采集独立采样 profile，作者的 profile 和 Windows 记录仍是作者证据。原生 premerge 的 6 项直接检查和 2 项 catalog canary 全过。按当前策略没有读取、轮询或等待 CI。

HTTP 结果覆盖真实 handler、序列化和脱敏，采集输入由夹具提供，未证明 canonical-store IO 或完整浏览器。作者公开保留的浏览器夹具/后续首页断言缺口不归并为本轮成功，也不要求这个局部字符串修复接管另一个夹具 PR。

我的整体评价

APPROVE，仅限这个完整 head 的有界卡顿修复。长期续行的任务、配额、重放和持久 owner 保持；状态读取的局部使用体验改善，不推断长期净效率。局部字符备选去重即可修复已复现卡顿；无需新增缓存、协议或第二个脱敏 owner。本 PR 仅改变 Windows 路径正则中的单字符大小写备选；流式前缀备选与权限门保持原实现。没有新增共享语义词汇、兼容解码器或状态缓存。已检查 loopx/chat.py、状态 HTTP 调用和答案/流式输出：没有页面布局或渲染组件改动，原有脱敏文本契约保持，因此无需新增截图。未验证范围：完整打包浏览器、原生 Windows 执行、其他 Python/Unicode 版本、生产分位数和完整费用未由本次独立验证资格化。本结论不是合并或安装授权。

English verdict: APPROVE d60c904. The reproduced near-root hang is removed while privacy outputs, Unicode aliases and stream semantics remain intact. Independent local tests, paired HTTP controls and native premerge passed; native Windows, full-browser and sustained production behavior remain outside this validation.