Update Groq model to openai/gpt-oss-120b and Gemini to 2.0-flash

Major Story Reels update: Direct script mode, sticky animation style, improved scene continuity prompts

Simplify Story Reels: topic + image_style + voice only (remove character profile)

Add Groq API support as primary script generator with Gemini fallback

Use gemini-2.5-flash model for better quota

Update to google-genai SDK for Gemini API

Initial commit: NCAkit with Story Reels module