Keep the observed target path and failed directory in the unreadable-link diagnostic without promoting either to proven graph identity. Verify the retained path through the importer boundary.
Refs: #4013, #4053
Continue validating child directories observed before a parent enumeration failure. Reconcile unobserved link targets at the reader using canonical path identity and the nearest failed ancestor, preserving exclusions and cancellation.
Refs: #4013, #4053, #4060
Co-authored-by: XY-code1 <1611761391@qq.com>
Require a caller-owned artifact resource scope for source traversal and Git metadata reads. Preserve cancellation, filesystem reasons, partial entries and bytes, and cleanup observations through import and the CLI. Transfer exact failed file owners at regular-file admission and close boundaries, including multiple failures encountered by Git reference resolution.
Validation: 169 focused tests passed across 26 files; two Windows-only cases skipped. Build, typecheck, lint, formatting, knip, architecture guards, discovery and docs checks passed.
BREAKING CHANGE: Reference source readers and imports require an ArtifactResourceScope. VCS metadata reads return Result, and CLI import failures include observed details and partial evidence.
morluto