fix: avoid watching directory symlink targets

[KRRT7]

Description

Avoid recursively watching directory symlinks from repository watchers. On Linux/NixOS, paths such as result -> /nix/store/... can otherwise cause the watcher to traverse very large dependency trees and consume excessive memory.

The watcher now prunes symlinks and their descendants while preserving explicitly force-included project-skill paths.

Linked Issue

• The linked issue is labeled ready-to-implement.

Fixes #13233

Testing

• cargo fmt --all
• cargo nextest run -p repo_metadata --no-fail-fast
• cargo clippy -p repo_metadata --lib --tests -- -D warnings
• git diff --check

Manual GUI testing is not applicable; this is a repository watcher change with automated coverage.

Agent Mode

• Warp Agent Mode - This PR was created via Warp's AI Agent Mode

CHANGELOG-BUG-FIX: Prevent repository watchers from following directory symlinks into large external trees.

[oz-for-oss]

@KRRT7

I'm starting a first review of this pull request.

You can view the conversation on Warp.

I reviewed this pull request and requested human review from: @acarl005.

Comment /oz-review on this pull request to retrigger a review (up to 3 times on the same pull request).

Powered by Oz

[oz-for-oss]

Overview

This PR updates repository watcher directory filtering so recursive watch registration prunes directory symlinks and their descendants, preventing symlinked paths such as Nix result links from causing traversal of large external trees. It preserves explicitly force-included project-skill paths and adds focused Unix coverage for symlink pruning, force-included symlinked skills, and the .git allowlist behavior.

Concerns

No blocking correctness, security, or spec-alignment concerns found. The attached spec context states that no approved or repository spec context exists for this PR.

Verdict

Found: 0 critical, 0 important, 0 suggestions

Approve

Comment /oz-review on this pull request to retrigger a review (up to 3 times on the same pull request).

Powered by Oz