Fix account plan display issue

[sergeychernyshev]

This PR fixes an issue where the account settings page could display the 'free' plan even for accounts on a 'pro' plan.

The root cause was that the account's plan field (used by the index and general info) and the billing state (used for plan details) were tracked separately and could get out of sync, especially when updated via the Admin API.

Changes:

• Updated AccountDO to automatically synchronize the plan info field whenever the billing state changes.
• Updated AccountDO.updateInfo to correctly update the billing state when the plan is manually overridden (e.g. from the Admin UI).
• Updated handleMe in src/index.ts to include full billing info for better client-side data consistency.
• Updated handleAccountDetails in src/index.ts to correctly sync both name and plan changes to the SystemDO index.
• Added regression tests in test/billing.spec.ts, test/admin.spec.ts, and test/accountdo.spec.ts to ensure the plan and billing data remain consistent.

Closes #71

✨ Assisted by AI: Gemini

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	startup-api	a323640	Feb 22 2026, 11:02 PM