diff --git a/CHANGELOG.md b/CHANGELOG.md
index fadb58c..48958f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,10 +8,18 @@ This project follows [Semantic Versioning 2.0.0](https://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+---
+
+## [1.0.0-alpha.5] - 2026-03-31
+
 ### 🐛 Bug Fixes
 
-- Fixed: flex-1 + justify-between space distribution broken by incorrect Flexible wrapping (#45)
-- Fixed: shrink-0 no longer creates Flexible wrapper — correctly preserves intrinsic size (#45)
+- **Flex Space Distribution**: flex-1 + justify-between no longer breaks layout — shrink-0 children are skipped during container-level Flexible wrapping (#45)
+- **shrink-0 Semantics**: shrink-0 no longer creates a Flexible wrapper — correctly preserves intrinsic size matching CSS flex-shrink: 0 behavior (#45)
+
+### 🔧 Improvements
+
+- **GitHub Copilot Config**: Added Copilot instructions converted from Claude Code configuration (#46)
 
 ---
 
diff --git a/CLAUDE.md b/CLAUDE.md
index 427d52b..76f7479 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,7 +2,7 @@
 
 Utility-first Flutter UI plugin. Translates `className` strings (Tailwind syntax) → Flutter widget trees via modular parsing architecture. A web developer who knows Tailwind should be able to build Flutter UIs with familiar syntax.
 
-**Version:** 1.0.0-alpha.4 (v1 branch) · **Branch:** `v1` (master = v0, do NOT touch) · **Dart:** >=3.4.0 · **Flutter:** >=3.27.0
+**Version:** 1.0.0-alpha.5 (v1 branch) · **Branch:** `v1` (master = v0, do NOT touch) · **Dart:** >=3.4.0 · **Flutter:** >=3.27.0
 
 ## Commands
 
diff --git a/doc/getting-started/installation.md b/doc/getting-started/installation.md
index 55957d7..e871bae 100644
--- a/doc/getting-started/installation.md
+++ b/doc/getting-started/installation.md
@@ -33,7 +33,7 @@ Alternatively, add it manually to your dependencies:
 
 ```yaml
 dependencies:
-  fluttersdk_wind: ^1.0.0-alpha.4
+  fluttersdk_wind: ^1.0.0-alpha.5
 ```
 
 <a name="basic-setup"></a>
diff --git a/pubspec.yaml b/pubspec.yaml
index 762d67d..9d53fd1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: fluttersdk_wind
 description: Utility-first styling framework for Flutter inspired by Tailwind CSS. Build UIs with WDiv, WText, WButton using intuitive className syntax.
-version: 1.0.0-alpha.4
+version: 1.0.0-alpha.5
 homepage: https://wind.fluttersdk.com
 repository: https://github.com/fluttersdk/wind
 issue_tracker: https://github.com/fluttersdk/wind/issues