feat(gemini): Improve language detection and output consistency

feat: Add AI script generator

feat(gemini): Refactor prompt for content repurposing

feat: Increase Firestore limits for campaign data

feat(gemini): Add JSON parsing error handling

fix(campaign): Improve error parsing for API responses

feat: Improve error handling for campaign creation

feat: Add PWA support and manifest

feat(deps): Update dependencies and remove unused packages

feat: Integrate server-side dependencies and update Gemini API usage

feat: Implement Gemini API client singleton

refactor: Remove unused dependencies

feat(admin): Display campaigns in admin panel

feat: Enhance campaign details styling and theme provider

feat: Add dark mode variant