The codex session-lifecycle-hook.mjs SessionStart path only appends
two env vars to CLAUDE_ENV_FILE. Rewrite that as a bash script to
avoid ~100ms V8 startup overhead. SessionEnd stays in Node.js since
it needs async broker teardown and process tree management.
Add team member dimension to case study paths so multiple contributors
can track optimization data independently. Derives member from
git config user.name in session-start hooks.
- Move all case studies under .codeflash/krrt7/
- Rename pypa/pip → python/pip (org grouping)
- Update session-start hooks, docs, scripts, and references