Implement version 0.0.3 features

- Add file attachment support for product versions (Media Library)
- Add version auto-detection from uploaded filenames
- Implement secure customer downloads with hash verification
- Add license key copy-to-clipboard functionality
- Redesign customer licenses page with card-based UI
- Fix product versions meta box visibility for non-licensed types
- Add DownloadController for secure file delivery
- Update CLAUDE.md roadmap and session history

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -36,12 +36,11 @@ This project is proudly **"vibe-coded"** using Claude.AI - the entire codebase w
 
 _No known bugs at this time._
 
-### Version 0.0.3 (Next)
+### Version 0.0.4 (Next)
 
-- Add download file attachment support for product versions
-- Implement customer download page for purchased licenses
-- Add license key copy-to-clipboard functionality in emails and account page
 - Consider adding license usage statistics/analytics
+- Consider adding bulk license operations in admin
+- Consider adding license renewal/extension functionality
 
 ## Technical Stack
 
@@ -289,3 +288,31 @@ Base: `/wp-json/wc-licensed-product/v1/`
 - Rate limiting uses WordPress transients
 - IP detection supports Cloudflare and proxies
 - Version management uses AJAX for smooth UX
+
+### 2026-01-21 - Version 0.0.3 Features
+
+**Implemented:**
+
+- File attachment support for product versions (WordPress Media Library integration)
+- Version auto-detection from uploaded filenames (e.g., `plugin-v1.2.3.zip`)
+- Customer download page for purchased licenses with secure authenticated downloads
+- License key copy-to-clipboard functionality on account page
+- New card-based UI for customer licenses page with download section
+- Product versions meta box visibility fix (now hidden for non-licensed product types)
+
+**New classes:**
+
+- `DownloadController` - Secure file delivery with hash-based URL verification
+
+**Technical notes:**
+
+- Secure download URLs use hash verification (license_id-version_id-hash format)
+- Database schema updated: `attachment_id` column added to versions table
+- ProductVersion model extended with `getEffectiveDownloadUrl()` and `getDownloadFilename()`
+- Media uploader filters for zip files only
+- Clipboard API with fallback for older browsers
+- Card-based responsive UI design for licenses page
+
+**Bug fixes:**
+
+- Fixed product versions meta box visibility for non-licensed product types (targets `#wc_licensed_product_versions` container)