walk() collected dirents by extension only, then readFileSync'd each — so a
broken symlink named *.md (e.g. the gitignored CLAUDE.md worktree symlink whose
target is absent in a gsd-test Docker copy) crashed the #1073 guard with ENOENT.
It passed on a developer Mac (the symlink resolves) and in GitHub CI (CLAUDE.md
is gitignored/absent), failing only on the gsd-test-docker-from-worktree path —
a real error hiding behind the local environment, not a flake.
Guard the collection with entry.isFile() so symlinks (and other non-regular
dirents) are skipped deterministically on every platform; gitignored files are
not shipped repo text, so excluding CLAUDE.md is correct. Add a deterministic
regression test (dangling *.md symlink fixture, Windows-symlink-guarded with a
genuine t.skip) asserting walk() excludes the broken symlink and the read loop
never throws ENOENT.
Closes#1545.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
#2551/#3182/#2361 are pre-migration get-shit-done-redux issue numbers with no
equivalent in open-gsd/gsd-core; they mislead triage and manufacture phantom
blockers. Repoint to real successors (#717 byte-budget rework, #720) or rewrite
as prose referencing the discuss-phase/modes progressive-disclosure split.
Correct co-located 'line budget'/'<500 lines' framing to the byte-based reality
(#717). Add a CI guard (tests/no-phantom-issue-refs.test.cjs) that fails if a
phantom ref is reintroduced. SSH-key patterns (id_ed25519) left untouched.
No user-facing runtime behavior change.
Closes#1073
