feat: separate token acquisition and application#21
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… flexible authentication management
…update version to 0.0.13-preview
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feat: separate token acquisition and application (addressing #20)
Add support for a flexible authentication via the TokenSource option, letting you choose where API tokens come from. It allows explicit control over where authentication tokens are obtained: client, server, both, or none, making authentication behavior clearer and more adaptable to different ways of obtaining and passing tokens.
The current default mode is Hybrid (TokenSource.Both), which first attempts to use a token provided by the MCP client and automatically falls back to server-managed authentication when no client token is available. This provides maximum flexibility while remaining fully backward compatible with existing configurations.
Additional modes include Server-managed authentication, where MCPify exclusively handles OAuth flows, token storage, and refresh; Client-managed authentication, where the MCP client is responsible for acquiring and supplying tokens; and No authentication, for public APIs. Together, these options reduce duplicate auth logic, improve interoperability with MCP clients, and make authentication intent explicit per external API.