No-op: Unauthenticated is already the default auth.provider for dab init

[Copilot]

Why make this change?

Investigation of the issue requesting Unauthenticated be set as the default auth.provider for dab init revealed this is already the case — no code changes required.

What is this change?

No changes. Both InitOptions.cs and AuthenticationOptions.cs already default to "Unauthenticated":

• InitOptions.cs: [Option("auth.provider", Default = "Unauthenticated", ...)]
• AuthenticationOptions.cs: public record AuthenticationOptions(string Provider = "Unauthenticated", ...)

How was this tested?

• Integration Tests
• Unit Tests

Existing tests in Cli.Tests/InitTests.cs consistently use "Unauthenticated" as the expected default provider value.

Sample Request(s)

# auth.provider defaults to Unauthenticated without explicit flag
dab init --database-type mssql --connection-string "@env('connection_string')"

[Copilot]

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