Snowflake private key auth fails with MissingParameterError

[StevenAltimate]

Bug: Snowflake private key authentication fails with MissingParameterError: A password must be specified

Steps to reproduce:

1. Attempt to add a Snowflake warehouse connection using private key authentication
2. Provide: private_key (path or content), private_key_passphrase, account, user, database, schema, warehouse, role
3. Run warehouse_test on the connection
4. Expected: Connection succeeds using private key authentication
5. Actual: Error: MissingParameterError: A password must be specified

Additional context:

• The private key is encrypted (BEGIN ENCRYPTED PRIVATE KEY)
• Password/passphrase authentication works fine for this user in other tools
• Tried multiple config variations including setting authenticator: "snowflake_login" and empty password
• The underlying library appears to always require a password field even when using private key auth

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Metadata

Field	Value
CLI Version	0.0.0-main-202603181556
Platform	darwin
Architecture	arm64
OS Release	24.6.0
Category	bug
Working Directory	altimate-code
Session ID	ses_2fe5683e7ffecSmuZCQPh1Emwz