v1.1.0 — Machine-checkable contracts

The Course Passport's contracts are now executable, not just documented — following advice from the ARS author (discussion #417) that the deterministic layer is what compounds.

New

• shared/course_passport.schema.json — formal JSON Schema for the Course Passport (required fields, enums, id patterns)
• scripts/check_passport.py — P1–P10 cross-reference invariants the schema can't express: id uniqueness, the assessed_by ↔ outcomes_assessed and taught_in ↔ schedule.outcomes bidirectional mirrors, referential integrity, weights summing to 100
• scripts/check_alignment_gate.py — Gate 1.5 (constructive alignment, checks A1–D3) executed deterministically instead of interpreted by a model; honors previously dismissed findings; PASS / PASS-WITH-WARNINGS / FAIL verdicts
• scripts/check_registry_consistency.py — the repo's three-places rule (SKILL.md ↔ MODE_REGISTRY.md ↔ filesystem) made executable
• Test suite + CI — the showcase passport serves as a golden fixture that must always pass clean; 24 mutation tests assert each check fires on targeted breakage; GitHub Actions runs everything on every push

Changed

• gate_runner_agent, passport_keeper_agent, and alignment_auditor_agent now run the validators when Python 3 is available and degrade gracefully to manual checklist evaluation (stated as lower assurance) when it isn't
• READMEs (EN + 中文) and ARCHITECTURE document the new layer

No skill modes or passport fields changed — existing passports validate as-is.