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+---
+id: task-021
+title: Implement Multi-Item File Upload with Encrypted Local Storage
+status: To Do
+assignee: []
+created_date: '2025-12-04 12:37'
+labels:
+  - feature
+  - security
+  - offline-storage
+  - upload
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Add drag-and-drop / file picker interface for batch importing local files into encrypted IndexedDB storage. Supports images, PDFs, documents, text files, audio, and video. Files are encrypted client-side and can be selectively shared to boards or backed up to R2. See docs/LOCAL_FILE_UPLOAD.md for full architecture.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [ ] #1 File drop zone component with drag-and-drop
+- [ ] #2 Support for images, PDFs, documents, text, audio, video
+- [ ] #3 Image thumbnail generation
+- [ ] #4 PDF text extraction and thumbnail
+- [ ] #5 All files encrypted before IndexedDB storage
+- [ ] #6 File browser panel with type filtering
+- [ ] #7 Search within uploaded files
+- [ ] #8 Storage quota display and warnings
+- [ ] #9 Drag files from browser to canvas
+- [ ] #10 Canvas shapes for images, PDFs, documents, generic files
+- [ ] #11 Share confirmation dialog for private files
+- [ ] #12 Per-file privacy controls
+<!-- AC:END -->