feat(media): Add HEIC/HEIF image support - v1.4.2

- Add pillow-heif dependency for iPhone photo support
- Auto-convert HEIC to JPEG (browsers can't display HEIC)
- Graceful error if pillow-heif not installed
- Handles RGBA/P mode conversion to RGB

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

CHANGELOG.md

@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.4.2] - 2025-12-16
+
+### Added
+
+- HEIC/HEIF image format support for iPhone photo uploads
+- Automatic HEIC to JPEG conversion (browsers cannot display HEIC)
+- Graceful error handling if pillow-heif library not installed
+
+### Dependencies
+
+- Added `pillow-heif` for HEIC image processing
+- Updated `Pillow` from 10.0.* to 10.1.* (required by pillow-heif)
+
 ## [1.4.1] - 2025-12-16
 
 ### Fixed