## What changed
- Export `ProjectTrustPath` and make `ProjectTrustLookup::from_paths` accept an explicit working directory and optional repository root instead of an arbitrary sequence of path pairs.
- Defer repository-root canonicalization until neither working-directory key matches, avoiding unnecessary filesystem access while preserving lookup precedence.
## Testing
Extend the active-project regression test to cover repository-root fallback and ensure a working-directory entry without a trust level takes precedence over a trusted root. Adapt the existing POSIX and Windows lookup tests to the new API.
GitOrigin-RevId: ba5dc0df1ef9d5109933df00c055eef04434601f
## What changed
Add `resolve_root_git_project_uri_for_trust` to resolve repository trust roots through `ExecutorFileSystem` using executor path conventions. Share repository and linked-worktree validation with native lookup while preserving native ancestry for paths with opaque URI representations.
Extract `ProjectTrustLookup` to match merged project settings using supplied path spellings and an explicit path convention. Preserve canonical-before-original and cwd-before-repository-root precedence, including cwd entries without a trust level, with ASCII case-insensitive matching for Windows.
## Testing
Add coverage for POSIX, Windows drive and UNC trust roots, project-key precedence and case handling, and native/URI lookup parity. Extend environment-config coverage to verify returned `projects` entries include entries without a trust level.
GitOrigin-RevId: 315434802e86cceee85b14bc1c3767a45e3139f5
Sean Huang