v1.3.0

• New: Google Gemini API support as an alternative AI provider
• New: API Provider selector in settings (POE or Google Gemini)
• New: Gemini API key field with show/hide toggle and link to Google AI Studio
• New: Gemini model selector (gemini-flash-latest and gemini-pro-latest)
• New: Support for DISTILLPRESS_GEMINI_API_KEY constant in wp-config.php
• Improved: Settings page dynamically shows/hides provider-specific fields
• Improved: Generic error messages no longer reference a specific provider