Update @mariozechner/pi-ai and @mariozechner/pi-coding-agent to v0.65.0

[github-actions]

Pi AI Libraries Update

Both pi-ai packages have updates available with breaking changes:

• @mariozechner/pi-ai: v0.57.1 → v0.65.0
• @mariozechner/pi-coding-agent: v0.57.1 → v0.65.0

Breaking Changes in v0.65.0

Session Runtime API Changes

• Removed extension events session_switch and session_fork
• Use session_start with event.reason instead
• Removed session-replacement methods from AgentSession
• Use new AgentSessionRuntime for session management

Migration Required

Before:

pi.on("session_switch", async (event, ctx) => { ... });
await session.newSession();

After:

pi.on("session_start", async (event, ctx) => {
  // event.reason: "startup" | "reload" | "new" | "resume" | "fork"
});

const runtime = await createAgentSessionRuntime(...);
await runtime.newSession();

Impact Assessment

This repo imports from both packages in the core agent framework. The breaking changes affect session management APIs that may be used in the quartermaster missions.

Review needed:

1. Check usage of session events in missions/
2. Verify agent initialization code
3. Test mission execution with new APIs

New Features

• New defineTool() helper for custom tools
• Label timestamps in /tree
• Unified diagnostics model
• Session runtime API improvements

Full changelog