Ensures HTTP-only dependencies are started for catalog operations.

This includes:

• HTTP client dependencies (:req and its dependencies)
• Tango application (for vault and other services)

Does not start database dependencies, making it safe for HTTP-only operations.

Ensures the configured Ecto repository is started.

Safe to call multiple times - handles already started repos gracefully.

Ensures all required applications and dependencies are started for Tango Mix tasks.

This includes:

• HTTP client dependencies (:req and its dependencies)
• Tango application (for vault and other services)
• Database repository (if configured)