[jmnote]

Refine Fallback Defaults and Startup Config Logging

[gemini-code-assist]

Code Review

This pull request introduces configuration logging at startup, featuring a new RedactedYAML function to mask sensitive API keys. It also refactors the MaxFallbacks configuration to use a pointer type for better default value management. Feedback was provided to ensure that potential errors when closing the YAML encoder are properly handled.

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internal/config/config.go (126-127)

The error from enc.Close() is currently ignored. While yaml.Encoder.Close() is unlikely to fail when writing to a bytes.Buffer, it is best practice to handle it to ensure all data is flushed correctly and to catch any unexpected issues during the finalization of the YAML document.

err = enc.Encode(&redacted)
	if closeErr := enc.Close(); closeErr != nil && err == nil {
		err = closeErr
	}