Class GeminiImageAnalysisCapabilityImpl

Adapts Gemini image analysis responses into ProviderPlaneAI's normalized image-analysis artifact surface.

Uses Gemini multimodal generation to analyze images and returns best-effort structured results by prompting the model to emit strict JSON.

NOTE:

• Gemini does not support tool/function calling in this path
• JSON structure is enforced via prompting only
• Bounding boxes and confidence scores are optional / best-effort