When users try to import custom example images without configuring the
download location, show a helpful guidance interface instead of failing
silently or showing an error after the fact.
Changes:
- ShowcaseView.js: Check if example_images_path is configured before
showing import interface; display setup guidance with open settings button
- showcase.css: Add styles for the setup guidance state
- locales: Add translation keys for all 10 supported languages
Clicking 'Open Settings' will:
1. Open the settings modal
2. Scroll to the Example Images section
3. Highlight the section with a brief animation
4. Focus the input field
Fixes#785
Add new POST endpoint `/api/lm/example-images/set-nsfw-level` to allow updating NSFW classification for individual example images. The endpoint supports both regular and custom images, validates required parameters, and updates the corresponding model metadata. This enables users to manually adjust NSFW ratings for better content filtering.
- Implemented MediaRenderers.js to generate HTML for video and image wrappers, including NSFW handling and media controls.
- Created MediaUtils.js for utility functions to manage media loading, lazy loading, and metadata panel interactions.
- Developed MetadataPanel.js to generate metadata panels for media items, including prompts and generation parameters.
- Introduced ShowcaseView.js to render showcase content, manage media items, and handle file imports with drag-and-drop support.
