Addresses all MISSING/PARTIAL items from the plan review:
- Glossary, Non-Goals, Hard Requirements, What It Is Not, Scope Lock
- Acceptance scenarios (AS-1 through AS-6) with pass/fail criteria
- Module layout (src/ file tree), state machine diagrams, concurrency model
- Cross-cutting concerns: error propagation, signals, temp dir, log boundary
- Tech stack rationale column on crate table
- Edge case catalog (EC-1..12), anti-patterns, invariants (INV-1..8)
- Proof obligations (PO-1..6) with named recovery per assumption
- Phase entry/exit criteria and LOC estimates for all 11 phases
- Conformance harness + definition of done + all-gates policy in Testing
- Security section: threat model (T-1..5), untrusted input policy, supply chain
- Performance section: budgets, benchmark contract, CI size gate
- Operations section: migration plan, semver stance, rollout/rollback, doctor command
- Risk register (R-1..7) with likelihood/impact/mitigation
- ADRs (ADR-001..003) for the three churn-magnet decisions
- Open Questions updated with phase dependencies and resolution deadlines
- Phase 6 renamed from duplicate "Hook installer" to "Stop poller"
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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