docs: rewrite negative patterns to positive actionable instructions
Convert 'do not' / 'never' / 'avoid' / 'cannot' / 'must not' patterns
into positive 'do ABC to achieve XYZ' instructions across four key docs.
Files changed:
- AGENTS.md: role restrictions, linux constraints, formatting gate,
private workspace, scratch paths, mount discipline, source-of-truth
- BUILD.md: colibri compilation, mini-binary policy, USB flashing,
SSH-key distribution, mDNS scope, PF logging, host disk policy
- skills/iso-build/SKILL.md: build gating, CLI policy, command chaining,
tmux workflow, colibri preflight/cargo-clean timing, SDDM retention
- PLAN-OPERATOR-USB-NEXT.md: SDDM contract, package categorization,
bhyve gating, dashboard dependencies, seed checkout exclusions
Safety-critical constraints (USB whole-disk flashing, verified artifacts
only) are preserved with positive rephrasing that keeps the constraint
intact.
Sam & Claude
f10216db12