Keel 0.5.1

Fixed

• Fixed Keel Pro checkout links to use the live Lemon Squeezy production checkout.
• Replaced mocked Keel Pro activation with real Lemon Squeezy license activation and validation.
• Limited accepted Keel Pro licenses to the live monthly and lifetime variants.
• Revoked local Pro access when Lemon Squeezy reports a license as expired, disabled, refunded, or no longer associated with the activation instance.
• Improved invalid-license error messages shown in Settings.
• Fixed the Tasks sidebar badge so it reflects open tasks instead of incoming captures.
• Excluded generated build output from Vitest and removed a test-only SQLite extension from macOS packages.

Verification

• Live production Lemon Squeezy license activates Keel Pro.
• Fake keys are rejected.
• Disabled/refunded licenses clear local Pro access.
• macOS DMG was signed, notarized, stapled, and verified.
• Tests and production build pass.