AgentMBX v0.5.1

What's Changed

• Clarify agent workflow and organize the native feature roadmap by @kryptobaseddev in #46
• fix(T201): heal stale peer addresses with signed challenges and presence by @kryptobaseddev in #48
• fix(T104): relay depth counts relays, not conversation turns by @kryptobaseddev in #49
• fix(T201): send queued mail as soon as a peer is heard from again by @kryptobaseddev in #50
• release: v0.5.1 stable local and LAN mailbox base by @kryptobaseddev in #47

Full Changelog: v0.5.0...v0.5.1