Added version to landing page

backend/VERSION.md

@@ -0,0 +1,70 @@
+# Version Management
+
+## Current Version: 0.1.30
+
+The backend version is managed in `/backend/config/version.go`.
+
+## Updating the Version
+
+To update the application version:
+
+1. Edit `/backend/config/version.go`
+2. Change the `Version` constant:
+   ```go
+   const Version = "0.1.31"  // Update this
+   ```
+
+## Git Commit Information
+
+The git commit hash is automatically detected at runtime from:
+
+1. `GIT_COMMIT` environment variable (preferred for Docker)
+2. Git command output (works in development)
+3. Falls back to "unknown" if neither is available
+
+## Setting Git Commit in Docker
+
+### Development Environment
+
+Add to `docker/.env`:
+```bash
+GIT_COMMIT=$(git rev-parse --short HEAD)
+```
+
+Then restart the container:
+```bash
+cd docker
+docker-compose -f docker-compose.dev.yml up -d backend-dev
+```
+
+### Production Build
+
+Use build-time variable:
+```bash
+docker build --build-arg GIT_COMMIT=$(git rev-parse --short HEAD) .
+```
+
+Or set in docker-compose.yml:
+```yaml
+environment:
+  - GIT_COMMIT=${GIT_COMMIT:-unknown}
+```
+
+## API Endpoints
+
+- **Public**: `GET /api/public/version` (no authentication)
+- **Protected**: `GET /api/version` (requires JWT token)
+
+Both return:
+```json
+{
+  "version": "0.1.30",
+  "gitCommit": "d0c177b"
+}
+```
+
+## Frontend Integration
+
+The landing page automatically fetches version information from `/api/public/version` and displays it.
+
+To see the version in the frontend, visit: http://localhost:5173