v0.5.0: NomadArch - Binary-Free Mode Release

Features:
- Binary-Free Mode: No OpenCode binary required
- NomadArch Native mode with free Zen models
- Native session management
- Provider routing (Zen, Qwen, Z.AI)
- Fixed MCP connection with explicit connectAll()
- Updated installers and launchers for all platforms
- UI binary selector with Native option

Free Models Available:
- GPT-5 Nano (400K context)
- Grok Code Fast 1 (256K context)
- GLM-4.7 (205K context)
- Doubao Seed Code (256K context)
- Big Pickle (200K context)

.github/workflows/dev-release.yml

@@ -0,0 +1,16 @@
+name: Dev Release
+
+on:
+  workflow_dispatch:
+
+permissions:
+  id-token: write
+  contents: write
+
+jobs:
+  dev-release:
+    uses: ./.github/workflows/reusable-release.yml
+    with:
+      version_suffix: -dev
+      dist_tag: dev
+    secrets: inherit