refactor modes implementation and improve validation handling

refactor `code` and `hybrid` modes for better type safety and configuration flexibility. add `_isProd` helper to standardize environment checks and improve plugin syncing warnings. adjust validation logic for clean JSON schema handling and enhance test coverage for modes.

app/src/adapter/bun/bun.adapter.ts

@@ -43,6 +43,7 @@ export function createHandler<Env = BunEnv>(
 
 export function serve<Env = BunEnv>(
    {
+      app,
       distPath,
       connection,
       config: _config,
@@ -62,6 +63,7 @@ export function serve<Env = BunEnv>(
       port,
       fetch: createHandler(
          {
+            app,
             connection,
             config: _config,
             options,

app/src/adapter/cloudflare/proxy.ts

@@ -65,37 +65,31 @@ export function withPlatformProxy<Env extends CloudflareEnv>(
    }
 
    return {
-      ...config,
-      beforeBuild: async (app, registries) => {
-         if (!use_proxy) return;
-         const env = await getEnv();
-         registerMedia(env, registries as any);
-         await config?.beforeBuild?.(app, registries);
-      },
-      bindings: async (env) => {
-         return (await config?.bindings?.(await getEnv(env))) || {};
-      },
       // @ts-ignore
       app: async (_env) => {
          const env = await getEnv(_env);
          const binding = use_proxy ? getBinding(env, "D1Database") : undefined;
+         const appConfig = typeof config.app === "function" ? await config.app(env) : config;
+         const connection =
+            use_proxy && binding
+               ? d1Sqlite({
+                    binding: binding.value as any,
+                 })
+               : appConfig.connection;
 
-         if (config?.app === undefined && use_proxy && binding) {
-            return {
-               connection: d1Sqlite({
-                  binding: binding.value,
-               }),
-            };
-         } else if (typeof config?.app === "function") {
-            const appConfig = await config?.app(env);
-            if (binding) {
-               appConfig.connection = d1Sqlite({
-                  binding: binding.value,
-               }) as any;
-            }
-            return appConfig;
-         }
-         return config?.app || {};
+         return {
+            ...appConfig,
+            beforeBuild: async (app, registries) => {
+               if (!use_proxy) return;
+               const env = await getEnv();
+               registerMedia(env, registries as any);
+               await config?.beforeBuild?.(app, registries);
+            },
+            bindings: async (env) => {
+               return (await config?.bindings?.(await getEnv(env))) || {};
+            },
+            connection,
+         };
       },
    } satisfies CloudflareBkndConfig<Env>;
 }

app/src/adapter/node/node.adapter.ts

@@ -24,7 +24,7 @@ export async function createApp<Env = NodeEnv>(
       path.resolve(distPath ?? relativeDistPath ?? "./node_modules/bknd/dist", "static"),
    );
    if (relativeDistPath) {
-      console.warn("relativeDistPath is deprecated, please use distPath instead");
+      $console.warn("relativeDistPath is deprecated, please use distPath instead");
    }
 
    registerLocalMediaAdapter();