This commit includes two improvements to the Astroglobe semantic search UI:
1. **Multi-select Document Types** (App.vue):
- Changed NcCheckboxRadioSwitch binding from v-model to :checked/:update:checked
- Implemented toggleDocType() method to manually manage selectedDocTypes array
- Fixes issue where only single document type could be selected at a time
- Users can now filter search results by multiple doc types simultaneously
2. **PDF Viewer Reactive Rendering** (PDFViewer.vue):
- Refactored canvas rendering to use Vue reactive watcher pattern
- Added watcher on 'loading' state that triggers rendering when canvas available
- Removed imperative renderPage() call from loadPDF() method
- Inspired by files_pdfviewer's promise/event-based initialization approach
- Improves alignment with Vue's reactive data flow
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
