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/__test__/app/modes.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, test } from "bun:test";
+import { code, hybrid } from "modes";
+
+describe("modes", () => {
+   describe("code", () => {
+      test("verify base configuration", async () => {
+         const c = code({}) as any;
+         const config = await c.app?.({} as any);
+         expect(Object.keys(config)).toEqual(["options"]);
+         expect(config.options.mode).toEqual("code");
+         expect(config.options.plugins).toEqual([]);
+         expect(config.options.manager.skipValidation).toEqual(false);
+         expect(config.options.manager.onModulesBuilt).toBeDefined();
+      });
+
+      test("keeps overrides", async () => {
+         const c = code({
+            connection: {
+               url: ":memory:",
+            },
+         }) as any;
+         const config = await c.app?.({} as any);
+         expect(config.connection.url).toEqual(":memory:");
+      });
+   });
+
+   describe("hybrid", () => {
+      test("fails if no reader is provided", () => {
+         // @ts-ignore
+         expect(hybrid({} as any).app?.({} as any)).rejects.toThrow(/reader/);
+      });
+      test("verify base configuration", async () => {
+         const c = hybrid({ reader: async () => ({}) }) as any;
+         const config = await c.app?.({} as any);
+         expect(Object.keys(config)).toEqual(["reader", "beforeBuild", "config", "options"]);
+         expect(config.options.mode).toEqual("db");
+         expect(config.options.plugins).toEqual([]);
+         expect(config.options.manager.skipValidation).toEqual(false);
+         expect(config.options.manager.onModulesBuilt).toBeDefined();
+      });
+   });
+});