test: dashboard greeting shows 'Hello, undefined' for users without a name

[tomazzi14]

Bug

The company dashboard top bar renders `Hello, {company.name}` but when a user signs up via Privy and hasn't filled in their company name yet, `company.name` is `undefined` and the UI shows literally "Hello, undefined".

Expected

If `company.name` is missing, fall back to "Hello, there" (or just "Hello").

Acceptance criteria

• No "Hello, undefined" string on a fresh signup.
• If the name is set, the existing greeting is preserved.

Notes

Tiny placeholder issue — used to test the end-to-end bounty flow. Not real work.