feat: show server version in sidebar header

Version injected at build time via VITE_APP_VERSION env var.
CI sets it to branch@sha. Falls back to 'dev' in local dev.
Displayed next to "Cameleer" in the sidebar header.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -53,6 +53,7 @@ jobs:
           npm run build
         env:
           REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
+          VITE_APP_VERSION: ${{ github.ref_name }}@${{ github.sha }}
 
       - name: Build and Test
         run: mvn clean verify -DskipITs -U --batch-mode

ui/src/components/LayoutShell.tsx

@@ -500,6 +500,7 @@ function LayoutContent() {
       <Sidebar.Header
         logo={camelLogo}
         title="Cameleer"
+        version={__APP_VERSION__}
       />
 
       {/* Applications section */}

ui/src/vite-env.d.ts

@@ -1 +1,3 @@
 /// <reference types="vite/client" />
+
+declare const __APP_VERSION__: string;

ui/vite.config.ts

@@ -6,6 +6,9 @@ import react from '@vitejs/plugin-react';
 const apiTarget = process.env.VITE_API_TARGET || 'http://localhost:8081';
 
 export default defineConfig({
+  define: {
+    __APP_VERSION__: JSON.stringify(process.env.VITE_APP_VERSION || 'dev'),
+  },
   plugins: [react()],
   server: {
     proxy: {