v0.1.0

[0.1.0] — 2026-09-27

Added

• interlock.leases: time-bounded authority grants with keepalive renewal and expiry.
• interlock.estop: global halt — one engagement suspends all permits; release is explicit.
• interlock.faults: fault bus with severity; gating faults refuse permits on affected resources.
• interlock.claims: provenance-stamped assertions (provenance, authority, review date, falsifier).
• interlock.interfaces: handoff records stating guarantees, constraints, ownership, failure behavior.
• interlock.ledger: self-describing run ledger (format descriptor, per-series schemas, closing index).
• Concept documentation in docs/concepts/, quickstart in docs/guides/.
• CI (Python 3.11–3.13, pytest, ruff), issue/PR templates, release script.

50 tests passing, ruff clean. Full changelog in CHANGELOG.md.