Switch Console.WriteLine over to Debug.WriteLine so as not to use Console.Out as debug log

[lassevk]

The original code is using Console.Out for debug messages. I didn't want to outright strip them away, but they are noise in terms of using this library, especially if you're trying to write a CLI tool, like I am.

If the library requires a TextWriter to write debug messages to, either a different one should be used, or an optional override property should be provided so that users of the package can opt-out of this debug log.

Instead, I switched the offending lines to use Debug.WriteLine. If the lines have served their purpose, however, they should probably be removed instead.

I did not get to run all unit tests successfully, as it relied on locally installed npx, which I don't have, and I suspect the official list of models from Google has changed so that some of the tests that ensure models exists are also failing. I did not, however, find any tests related to using the offending debug log messages, so I assumed it was safe to make the switch.

Summary by CodeRabbit

• Refactor
  • Improved diagnostic logging for streaming responses without displaying internal request and message details in standard application output.
  • Streaming activity and content information is now available through debug logging.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: c8157a20-88d0-4dba-82ac-8e4be7821796

📥 Commits

Reviewing files that changed from the base of the PR and between 4aee127 and bfdfd23.

📒 Files selected for processing (1)

• src/GenerativeAI.Microsoft/GenerativeAIChatClient.cs

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📝 Walkthrough

Walkthrough

GetStreamingResponseAsync now sends stream and request-shape diagnostics to debug output rather than standard output, with System.Diagnostics imported to support Debug.WriteLine.

Changes

Streaming logging

Layer / File(s)	Summary
Route streaming diagnostics to debug output src/GenerativeAI.Microsoft/GenerativeAIChatClient.cs	The stream-start, per-content-type, and request Contents logs now use Debug.WriteLine instead of Console.WriteLine.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• gunpal5/Google_GenerativeAI#18: Modifies the same client and streaming method’s signature and response types.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change from Console.WriteLine to Debug.WriteLine for debug logging.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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