v0.1.0

0.1.0

Initial release: local intent ledger and approval gate for tool actions.

• propose / dry-run / approve / deny / verify / show / list
• Append-only ledger.jsonl with sha256 hash chain
• Optional HMAC seal via ACTGATE_SEAL_KEY (verify --require-seal)
• Exit codes 0 / 1 / 2
• Stdlib-only core path