Documents 8 concrete improvements to build-redbear.sh and the cookbook
tool, derived from the redbear-mini boot crash debug session:
1. Trap-based stash-and-restore for ALL fork sources (eliminates the
'where did my edits go?' pain)
2. Source content-hashing to replace mtime-only cache invalidation
3. Cookbook binary freshness check (currently existence-only)
4. Strict-by-default uncommitted-edit gate
5. Stash-all-forks consistency
6. Failure-cleanup trap with diagnostics
7. Pre-cook offline/upstream consistency
8. Cookbook protection against out-of-band invocations
Each improvement has a file:line location, implementation sketch,
and impact/complexity rating. Implementation order suggested.
Problem motivation: the user has repeatedly hit silent stash-loss,
stale cookbook binaries, and mtime-based cache staleness while
debugging kernel/relibc/base forks. The build pipeline should
make these mistakes impossible, not require users to remember
workarounds.
vasilito
6b2f54c9bd