Added version to landing page

frontend/VERSION.md

@@ -0,0 +1,87 @@
+# Frontend Version Management
+
+## Current Version: 0.1.30
+
+The frontend version is managed independently from the backend.
+
+## Version Locations
+
+1. **Primary source**: `/frontend/src/version.js`
+   - Contains the VERSION constant
+   - Exports version info functions
+
+2. **Package metadata**: `/frontend/package.json`
+   - Standard npm version field
+   - Should match version.js
+
+## Updating the Version
+
+### Option 1: Using the update script (Recommended)
+```bash
+# Updates both backend and frontend
+./scripts/update-version.sh 0.1.31
+```
+
+### Option 2: Manual update
+Edit `/frontend/src/version.js`:
+```javascript
+export const VERSION = '0.1.31'  // Update this
+```
+
+And `/frontend/package.json`:
+```json
+{
+  "version": "0.1.31"  // Update this
+}
+```
+
+## Git Commit Information
+
+The git commit is injected via environment variable:
+- Set `VITE_GIT_COMMIT` in `.env` or at build time
+- Falls back to "unknown" if not set
+
+Example `.env`:
+```bash
+VITE_GIT_COMMIT=d0c177b
+```
+
+## Usage in Components
+
+```javascript
+import { getVersion, getGitCommit, getVersionInfo } from '@/version'
+
+// Get version string
+const version = getVersion()  // "0.1.30"
+
+// Get git commit
+const commit = getGitCommit()  // "d0c177b" or "unknown"
+
+// Get full info object
+const info = getVersionInfo()  // { version: "0.1.30", gitCommit: "d0c177b" }
+```
+
+## Landing Page Display
+
+The landing page shows both:
+- **Frontend Version**: From `/frontend/src/version.js`
+- **Backend Version**: Fetched from `/api/public/version`
+
+This allows users to see if frontend and backend are in sync.
+
+## Build-time Version Injection
+
+To inject git commit at build time, update `vite.config.js`:
+
+```javascript
+import { defineConfig } from 'vite'
+import { execSync } from 'child_process'
+
+const gitCommit = execSync('git rev-parse --short HEAD').toString().trim()
+
+export default defineConfig({
+  define: {
+    'import.meta.env.VITE_GIT_COMMIT': JSON.stringify(gitCommit)
+  }
+})
+```