- Add EmbeddedImage struct and SendEmailWithEmbeddedImages method for inline images
- Update SendTaskCompletedEmail to accept and display completion photos
- Read images from disk via StorageService and embed with Content-ID references
- Wire StorageService to TaskService for image access
- Photos display inline in HTML email body, works across all email clients
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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