feat: Show F3 name in Manage Access user search results

[Copilot]

The Manage Access user search was displaying email (First Last), making it hard to identify users since F3 names are how members know each other.

Changes

• Modal dropdown format (admin-manage-access-modal.tsx): Already updated to display results as two lines:

  F3Name (First Last)   ← bold label
  email@example.com     ← muted sublabel
  

  Falls back gracefully: if no F3 name, shows full name; if no name at all, shows email only.

• API (packages/api/src/lib/user.ts): f3Name, firstName, lastName are included in the base (non-PII) select, so they're always returned by byEmail regardless of includePii flag.

• Test (packages/api/src/router/user.test.ts): Added test to describe("byEmail") that creates a user with known name fields and asserts all three name fields plus email are present in the response.

Original prompt

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This section details on the original issue you should resolve

<issue_title>feat: Show F3 Name on Manage Access user search</issue_title>
<issue_description>### Describe the feature you'd like to request

When searching for a user by email to give them access it returns their email and first/last name. It should also return F3 name - as no one knows people's actual name.

Describe the solution you'd like to see

Right now the search returns

<email> (<First Name> <Last Name>)

Can it be something like

<f3_name> (<First Name> <Last Name>)
<email>

Additional information

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes feat: Show F3 Name on Manage Access user search #62

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