Function runStartup

Combined startup: auth check, setup check, daily fetch, dashboard launch, version detection.

runStartup(): Promise<StartupOutput>
Run startup checks and return structured output. Returns StartupOutput with one of three shapes:
1. Setup incomplete: { version, setupComplete: false }
2. Auth failure: { version, setupComplete: true, authError: "..." }
3. Success: { version, setupComplete: true, daily, dashboardUrl?, issueList? }
Returns Promise<StartupOutput>
Startup output with auth/setup status and daily digest

Throws
If the daily check fails (auth or network errors propagate)
- Defined in commands/startup.ts:183