v0.6.1

Fix: Lead hangs indefinitely when spawning multiple teammates

When the lead model generated multiple team_spawn calls in a single response, the proxy could truncate large JSON payloads mid-stream, silently dropping spawns. The lead would then stall waiting for results that never arrived.

• Remove redundant AGENTS.md loading from spawn context (the system prompt hook already covers it), reducing each promptAsync payload by up to 2KB
• Add sequential spawn guidance to the lead system prompt — prevents multiple large team_spawn calls in a single response
• Add spawn verification guidance so the lead confirms each spawn succeeded before continuing

Full Changelog: v0.6.0...v0.6.1