[gentbot]

On macOS, $BATS_TMPDIR resolves through /tmp → /private/tmp, causing
the "inside worktree" safety check to silently miss when target contained
the unresolved symlink path. Resolve both sides with pwd -P before
comparing.

Update two wrktr_unload test assertions from exact string match to =~
since $output includes the sourcing banner ahead of the echoed value.

What and why

Changes

Checklist

All PRs

• bats tests/ passes locally
• shellcheck worktree-functions.sh passes locally
• CHANGELOG.md updated (add entry under [Unreleased])

New public functions

• Docblock above function follows the project format
• [ "$1" = "--help" ] && { wrktr_help <name>; return 0; } guard present
• wrktr_validate || return 1 at top (for session-dependent functions)
• Dry-run support: _wrktr_run wraps mutations; _wrktr_is_dryrun gates conditional logic
• Error messages use _wrktr_breaker red "..." (writes to stderr)
• Help entry added to wrktr_help case statement
• Documentation added to docs/wrktr.md function reference
• Row added to Quick reference table in docs/wrktr.md
• Tab completion registered if function takes branch or session names
• Tests added to tests/wrktr.bats (at least one success, one failure)

Behavior changes to existing functions

• Describe whether the change is backwards-compatible
• Existing tests updated to reflect new behavior
• docs/wrktr.md updated if command usage or behavior description changed