Add lock files for package management and update architecture documentation

- Introduced bun.lock and package-lock.json to manage dependencies for the project.
- Enhanced backend API architecture documentation with additional security and documentation guidelines.
- Made minor formatting adjustments across various files for consistency and clarity.

backend-api/src/server.ts

@@ -20,24 +20,28 @@ import {dashboardRoutes} from './routes/dashboard.routes';
  * Implements Single Responsibility: Server configuration
  */
 export async function buildServer() {
+  if (env.NODE_ENV !== 'production') {
+    console.log('Development mode enabled. Environment variables [%o]', env);
+  }
+
   const fastify = Fastify({
     logger: {
       level: env.NODE_ENV === 'development' ? 'info' : 'error',
-      transport: env.NODE_ENV === 'development' ? {target: 'pino-pretty'} : undefined,
-    },
+      transport: env.NODE_ENV === 'development' ? {target: 'pino-pretty'} : undefined
+    }
   });
 
   // Register plugins
   await fastify.register(cors, {
     origin: env.CORS_ORIGIN,
-    credentials: true,
+    credentials: true
   });
 
   await fastify.register(jwt, {
     secret: env.JWT_SECRET,
     sign: {
-      expiresIn: env.JWT_EXPIRES_IN,
-    },
+      expiresIn: env.JWT_EXPIRES_IN
+    }
   });
 
   // Register Swagger for API documentation
@@ -46,32 +50,32 @@ export async function buildServer() {
       info: {
         title: 'Personal Finances API',
         description: 'API for managing personal finances including assets, liabilities, invoices, and more',
-        version: '1.0.0',
+        version: '1.0.0'
       },
       servers: [
         {
           url: `http://localhost:${env.PORT}`,
-          description: 'Development server',
-        },
+          description: 'Development server'
+        }
       ],
       components: {
         securitySchemes: {
           bearerAuth: {
             type: 'http',
             scheme: 'bearer',
-            bearerFormat: 'JWT',
-          },
-        },
-      },
-    },
+            bearerFormat: 'JWT'
+          }
+        }
+      }
+    }
   });
 
   await fastify.register(swaggerUi, {
     routePrefix: '/docs',
     uiConfig: {
       docExpansion: 'list',
-      deepLinking: false,
-    },
+      deepLinking: false
+    }
   });
 
   // Register error handler
@@ -80,7 +84,7 @@ export async function buildServer() {
   // Health check
   fastify.get('/health', async () => ({
     status: 'ok',
-    timestamp: new Date().toISOString(),
+    timestamp: new Date().toISOString()
   }));
 
   // Register routes