v1.4.0

Feature

• feat(onboarding): add interactive setup wizard

Fix

• fix(onboarding): ensure SSH key path has valid default
• fix: Address Codex review feedback
• fix(onboarding): preserve empty Consul token in config
• fix: Address Codex P1 and P2 review feedback
• fix(onboarding): add Consul port validation to prevent crashes on invalid input

Other

• docs: add onboarding feature to README and CHANGELOG
• chore: bump version to 1.4.0