[thekevinbot]

Fixes #1582

A path table walking './**' silently dropped every file whose absolute path is longer than PATH_MAX: the directory listing opened each directory by its full path and treated ENAMETOOLONG as an empty directory.

The fix (packages/rust/src/long_path.rs): on Unix, a path the kernel refuses as too long is opened again a stretch of components at a time, each stretch openat-ed relative to the directory the previous one reached. The listing, the stat columns, symlink/unknown-type classification in the scanner, and content reads all go through it, so deep files keep size, mtime and content. Windows needs nothing: std already passes long paths in \\?\ form, and the red test passed on Windows.

Red run (test-only commit f90ef39, Integration tests fails with left: Integer(20) right: Integer(30)): https://github.com/thekevinscott/dirsql/actions/runs/41949428945/job/126989572880

By hand: the issue's repro now prints [{"n":30,"longest":6039}]; the deepest row reports size 1, a non-NULL mtime, and content "x".

Merging main (#1585's open_regular) resolved a conflict in vtab.rs: open_regular now opens through long_path::open_file, which opens O_NONBLOCK so the FIFO guard still holds. The non-unix open_file body is exempt from mutation in testing-conventions.toml, as it is compiled out on the Linux runner.

Not covered here: declared [[table]] freshness stats (RealFs in lib.rs) and a .gitignore sitting past the limit still use plain std paths.

E2E Verification

• Ran e2e suites locally for every affected SDK
• Python SDK e2e: pass (impacted subset)
• TypeScript SDK e2e: pass
• Rust core e2e (if applicable): pass
• packages/python/e2e-attestations/<branch>.json receipt written if packages/python changed (just e2e-attest-python)
• packages/ts/e2e-attestations/<branch>.json receipt written if packages/ts changed (just e2e-attest-ts)
• Command(s) run:
  • cd packages/python && testing-conventions e2e attest 'uv run python -m pytest tests/e2e/glob_speed_recursive_test.py tests/e2e/glob_speed_symlink_test.py tests/e2e/stat_speed_test.py tests/e2e/query_contract_test.py tests/e2e/root_at_construction_test.py -x -q'
  • cd packages/ts && testing-conventions e2e attest 'pnpm test:e2e'
  • cargo test -p dirsql --features cli --test path_table_cli_e2e --test path_table_gitignore_cli_e2e --test path_max_depth_e2e --test path_table_symlinks --test path_table_globs --test path_table_query --test scanner --test scan_failures
• Result summary: Python 17 passed; TypeScript 27 passed; Rust 144 passed.

Changelog / Migrations

• Changelog fragment added under <root>/<pkg>/changelog.d/ for each changed package (or: skip-changelog trailer on a commit with reason)
• Migration fragment with the same slug added under <root>/<pkg>/migrations.d/ for each changed package (every subsection but Summary _None._ when nothing breaks)