Jason Staack f1abb75cab feat(02-01): add SSH executor with TOFU host key verification and config normalizer ...

- SSH RunCommand with typed error classification (auth, hostkey, timeout, connection refused, truncated)
- TOFU host key callback: accept-on-first-connect, verify-on-subsequent, reject-on-mismatch
- NormalizeConfig strips timestamps, normalizes line endings, trims whitespace, collapses blanks
- HashConfig returns 64-char lowercase hex SHA256 of normalized config
- 22 unit tests covering all error kinds, TOFU flows, normalization edge cases, idempotency

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-12 20:46:04 -05:00

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