[upstream-sync] LocalFile source: ignore errors and warn in list() for resilient directory listing (upstream PR #1753)

[github-actions]

Upstream Change Summary

Type: bug-fix / improvement
Difficulty: Easy
Recommendation: Adopt

Upstream changed the list() method for the LocalFile source to ignore all errors during directory listing and emit warnings instead of propagating errors. Previously, a single unreadable file or permission error could abort the entire listing. This makes the source more resilient when processing directories with mixed permissions.

Upstream References

• PR: chore: ignore all errors and warn in list() for LocalFile source cocoindex-io/cocoindex#1753 (commit: be49b878)
• Release: v0.3.35
• Upstream repo: https://github.com/cocoindex-io/cocoindex

Relevant Upstream Files / Areas

• rust/cocoindex/src/ops/sources/local_file.rs — list() method error handling

Recoco Considerations

• Maps to crates/recoco-core/src/ops/sources/local_file.rs (or equivalent path)
• Feature-gated behind source-local-file — no new feature gates needed
• This change is purely in error handling logic, no API surface changes
• Recoco uses the same local_file source implementation; this fix is directly applicable
• Consider whether tracing/log crate integration aligns with recoco's logging approach (recoco may use tracing — ensure warnings use tracing::warn! not log::warn!)

Integration Notes

Simple and safe to adopt. Check that the list() function signature and surrounding code in recoco's local_file source matches the upstream before applying the patch. Related to filesystem watch support (issue #97) — both touch the same source file.