f3269b414c
Documents the project-wide rule that Red Bear OS local forks are the complete, authoritative source of truth for every component they cover. Key points: - A fork that delegates to upstream/crates.io is not a fork — it's a wrapper. - Missing fork functionality is implemented in the fork, not papered over. - Path deps + [patch.crates-io] everywhere; no version strings for forks. - Adapt to upstream at the same pace — never pin back. Adds a cross-reference from local/AGENTS.md DESIGN PRINCIPLE section.