chore: v0.3.1 へのバージョン更新と開発版に関する注記の追加

- pubspec.yaml および lib/oss_licenses.dart のバージョンを 0.3.1 に更新
- alpha タグを削除し、プレビュー版から通常バージョン表記へ移行
- README / README.ja.md に「0.x 系は常に開発版である」旨の注記を追加
- oss_licenses.dart 内の微細なフォーマット調整

Author: fal-114514

README.ja.md

@@ -1,6 +1,6 @@
 # Forge Flutter Client
 
-[![Version](https://img.shields.io/badge/version-v0.3.0--alpha-orange)](https://github.com/fal-114514/forge-flutter)
+[![Version](https://img.shields.io/badge/version-v0.3.1-orange)](https://github.com/fal-114514/forge-flutter)
 [![Platform](https://img.shields.io/badge/platform-Windows-blue)](https://github.com/fal-114514/forge-flutter)
 [![License](https://img.shields.io/badge/license-zlib-green)](LICENSE)
 
@@ -60,7 +60,7 @@ Forge Flutter Client は、[Forge Classic Neo](https://github.com/Haoming02/sd-w
 
 ## コントリビューション
 
-本プロジェクトは現在 **アルファ版** です。未実装の機能やバグが存在する可能性があります。
+本プロジェクトは現在活発に開発中です。**0.x 系のバージョンは常に開発版（プレビュー版）として扱われ**、破壊的な変更が行われる可能性があります。皆様からのフィードバックやプロジェクトへの貢献を歓迎します。
 
 - Issue でのバグ報告や機能提案
 - プルリクエストによる改善

README.md

@@ -1,6 +1,6 @@
 # Forge Flutter Client
 
-[![Version](https://img.shields.io/badge/version-v0.3.0--alpha-orange)](https://github.com/fal-114514/forge-flutter)
+[![Version](https://img.shields.io/badge/version-v0.3.1-orange)](https://github.com/fal-114514/forge-flutter)
 [![Platform](https://img.shields.io/badge/platform-Windows-blue)](https://github.com/fal-114514/forge-flutter)
 [![License](https://img.shields.io/badge/license-zlib-green)](LICENSE)
 
@@ -59,7 +59,7 @@ New to Forge Flutter Client? See the [Quick Start Guide](docs/QUICKSTART.md) for
 
 ## Contribution
 
-This project is currently in **alpha**. Contributions are very welcome!
+This project is currently in active development. Please note that **all 0.x versions are considered development versions**, and major changes may occur. Contributions are very welcome!
 
 - Bug reports & Feature requests via Issues
 - Pull Requests

lib/oss_licenses.dart

@@ -6738,12 +6738,12 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.''',
   );
 
-/// forge_flutter 0.3.0-alpha+1
+/// forge_flutter 0.3.1
 const _forge_flutter = Package(
     name: 'forge_flutter',
     description: 'A lightweight desktop client for Forge Classic Neo.',
     authors: [],
-    version: '0.3.0-alpha+1',
+    version: '0.3.1',
     spdxIdentifiers: ['Zlib'],
     isMarkdown: false,
     isSdk: false,

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.3.0-alpha+1
+version: 0.3.1
 
 environment:
   sdk: ^3.11.0