Controller now delegates to SocialMediaAssistant::prompt() and reads
generated attachments from AttachmentCollector (request-scoped). The
three preg_match branches for [GENERATE_IMAGE/VIDEO/AUDIO] commands
are gone — the LLM invokes tools directly with typed parameters.
Deleted:
- app/Services/Ai/GeminiTextGenerationService.php
- app/Services/Ai/TextGenerationService.php (OpenAI alternative)
- app/Services/Ai/ImageGenerationService.php
- app/Services/Ai/AudioGenerationService.php
- app/Services/Ai/Contracts/TextGenerationInterface.php
Kept: VideoGenerationService (wrapped by GenerateVideo tool since
Veo is not in the SDK's provider matrix) and IntentDetector.
Tests now fake the agent via SocialMediaAssistant::fake() with either
canned text or a callable that simulates tool side-effects by pushing
directly into AttachmentCollector.
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