chore: update software factory to eve 0.73.0

Summary

The software factory predates the current delegation and event APIs. Upgrade eve and the GitHub extension, migrate station output schemas to AgentSession.send(), and read delegation order from agent.started events.

Validation

• FACTORY_REPO=vercel/eve LINEAR_CONNECTOR=linear/foreman-agent pnpm validate passed with 0 discovery errors or warnings.
• pnpm peers check passed.
• git diff --check passed.

Checklist

• This change was requested or approved by a maintainer
• I ran the relevant checks from CONTRIBUTING.md
• I added tests and documentation where relevant
• I added a changeset if this touches the published eve package
• DCO sign-off passes for every commit (git commit --signoff)