\$CLAUDE_PROJECT_DIR is Claude Code-specific. Gemini CLI doesn't set it, and on
Windows its path-join logic doubled the value producing unresolvable paths like
D:\Projects\GSD\'D:\Projects\GSD'. Gemini runs project hooks with project root
as cwd, so bare relative paths (e.g. node .gemini/hooks/gsd-check-update.js)
are cross-platform and correct. Claude Code and others still use the env var.
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Local installs wrote bare relative paths (e.g. `node .claude/hooks/...`)
into settings.json. Claude Code persists the shell's cwd between tool
calls, so a single `cd subdir` broke every hook for the rest of the
session.
Prefix all 9 local hook commands with "$CLAUDE_PROJECT_DIR"/ so path
resolution is always anchored to the project root regardless of cwd.
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
