Align Whisk image workflows with Gemini generateContent schema

[Copilot]

The proxy needs to handle Whisk image generation, editing, and description requests in a way that is compatible with the Gemini REST generateContent format (e.g., gemini-2.5-flash-image). This updates the Whisk proxy path to accept Gemini-style inputs and return native Gemini-style outputs.

• Gemini compatibility layer

  • Parse generateContent inputs to drive Whisk image generation, editing, and caption workflows.
  • Emit Gemini-compliant responses for image outputs and descriptions.

• Request parsing coverage

  • Add focused unit tests validating Gemini-style request parsing for Whisk image operations.

// Parse Gemini generateContent inputs and route to Whisk image workflows,
// returning Gemini-compatible image/description responses.
resp, err := whiskExecutor.HandleGeminiGenerateContent(ctx, req)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• ai.google.dev
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Check how to modify additional logic from the Whisk service (editing and generating photos and creating descriptions) in such a way that the proxy is compatible with the native Gemini API, i.e., just like the gemini-2.5-flash-image model.
So like here:
https://ai.google.dev/gemini-api/docs/image-generation?hl=pl#rest_1

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