v0.5.0: Binary-Free Mode - No OpenCode binary required

✨ Major Features:
- Native session management without OpenCode binary
- Provider routing: OpenCode Zen (free), Qwen OAuth, Z.AI
- Streaming chat with tool execution loop
- Mode detection API (/api/meta/mode)
- MCP integration fix (resolved infinite loading)
- NomadArch Native option in UI with comparison info

🆓 Free Models (No API Key):
- 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)

📦 New Files:
- session-store.ts: Native session persistence
- native-sessions.ts: REST API for sessions
- lite-mode.ts: UI mode detection client
- native-sessions.ts (UI): SolidJS store

🔧 Updated:
- All installers: Optional binary download
- All launchers: Mode detection display
- Binary selector: Added NomadArch Native option
- README: Binary-Free Mode documentation

packages/ui/src/index.css

@@ -17,10 +17,9 @@
   padding: 0;
 }
 
-
-
 html,
-body {
+body,
+#root {
   font-family: var(--font-family-sans);
   font-size: var(--font-size-base);
   line-height: var(--line-height-normal);
@@ -29,45 +28,11 @@ body {
   -moz-osx-font-smoothing: grayscale;
   background-color: var(--surface-base);
   color: var(--text-primary);
-  margin: 0;
-  padding: 0;
-  overflow: hidden;
-  width: 100%;
-  height: 100%;
-}
-
-#root {
-  width: 100%;
-  height: 100%;
-  background-color: var(--surface-base);
-  overflow: hidden;
-}
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+  margin: 0 !important;
+  padding: 0 !important;
+  overflow: hidden !important;
+  width: 100vw !important;
+  height: 100vh !important;
+  display: flex !important;
+  flex-direction: column !important;
+}