hook-before-edit.mjs kept its own string-based isInsideProject; it now
uses the shared isScanTargetInsideProject so all three hook passes
apply one containment semantic, symlink canonicalization included.
Because the before-edit hook gates proposed Writes whose target does
not exist yet, canonicalPath now resolves the nearest existing
ancestor and re-appends the remainder instead of falling back to the
raw resolved path — a new file under a symlinked root compares equal
to its canonical project.
Written with AI assistance (Claude Code).
Co-Authored-By: Claude Code <noreply@anthropic.com>