applyTo	lib/*/.sh

Lib Instructions

Modifying Core (`lib/*.sh`)

Maintain backwards compatibility with existing configs
Quote all paths: Support spaces in directory names
Use log_error / log_info from lib/ui.sh for user messages
Git version fallbacks: Check lib/core.sh:97-100 for example (Git 2.22+ --show-current vs older rev-parse)

resolve_base_dir: config/env/default selection; warn if inside repo & not ignored.
resolve_target: ID 1 + branch/current + sanitized path scan; returns TSV.
create_worktree: decides remote/local/new; respects --force + --name safety.
cfg_default: precedence local→global→system→env→fallback (do not reorder).
cfg_get_all: merge multi-value keys; preserves order; deduplicates.

Preserve adapter contracts; do not rename exported functions used by command handlers in lib/commands/.
Add new config keys with gtr.<name> prefix; avoid collisions.
For performance-sensitive loops (e.g. directory scans) prefer built-ins (find, grep) with minimal subshells.
Any new Git command: add fallback for older versions or guard with detection.
Manual test after changes (subset): new, open, ai, rm, list --porcelain, config set/get/unset, go 1, hooks run once.