Tasks

• Red: rule parse/validate/evaluate unit tests in signaltty-agent.
• Red: Store screen-state transition and hook gate unit tests.
• Red: real-PTY integration tests (blocked, working→done, hook dominance, no rules).
• Implement rules, gate, transition and server tick; tests green.
• ADR-0024 and the docs/07 manifest section.
• Mutation-check the new tests; scripts/verify.sh fast.
• Gemini review; resolve findings.
• Publish, link and merge on exact-head CI.