refactor(api): version routes and externalize client base url

- serve REST endpoints under /api/v1 with root exceptions for health and mcp

- move swagger UI to /docs and allow direct frontend calls via CORS

- remove Vite proxy/hash routing and rely on env-driven VITE_API_URL

server/src/config/app.config.ts

@@ -23,7 +23,7 @@ export class AppConfig {
   KEYS_DIR: string = "keys";
 
   @IsString()
-  DB_PATH: string = "data/sessions.db";
+  DB_PATH: string = "data/liqa.db";
 
   @IsInt()
   @Min(1)