[docs] Update release notes for 4.147.0 (in development)

documentation/docfx/releases/4.147.0-unreleased.md

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+<!-- Generated: 2026-04-30T14:38:00Z by claude-sonnet-4.6 -->
+
+# Version 4.147.0
+
+> **Upcoming release** · In development · Not yet available on NuGet
+
+## Highlights
+
+This upcoming release brings Apple platform TFM corrections for proper .NET 9 compatibility, SkiaFiddle UX improvements, and a sample fix for Uno Gallery. Thanks to community contributor [@ramezgerges](https://github.com/ramezgerges) for driving multiple user-facing improvements. Plus several CI and documentation improvements.
+
+## Breaking Changes
+
+*None in this release.*
+
+## New Features
+
+### Platform
+
+- **Apple TFM corrections** — Fixes the Target Framework Monikers for Apple platform libraries: library projects now use versioned TFMs (`net9.0-ios26.0`, etc.) while app-facing targets use the unversioned form, ensuring correct SDK resolution. ([#3798](https://github.com/mono/SkiaSharp/pull/3798))
+
+### Developer Experience
+
+- **SkiaFiddle UX improvements** — Multiple UX enhancements to the SkiaFiddle interactive playground. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3790](https://github.com/mono/SkiaSharp/pull/3790))
+
+## Bug Fixes
+
+- **Fix Skottie package downgrade in Uno Gallery** — Resolves a NU1605 package downgrade warning for the Skottie package in the Uno Gallery sample project. ❤️ [@ramezgerges](https://github.com/ramezgerges) ([#3785](https://github.com/mono/SkiaSharp/pull/3785))
+
+## Platform Support
+
+| Platform | What's New |
+|----------|-----------|
+| 🍎 Apple | Corrected TFMs for .NET 9 library and app targets |
+
+## Community Contributors ❤️
+
+| Contributor | What They Did |
+|-------------|--------------|
+| [@ramezgerges](https://github.com/ramezgerges) | SkiaFiddle UX improvements and Uno Gallery sample fix |