diff --git a/packages/auth/src/__contracts__/users-repository.contract.ts b/packages/auth/src/__contracts__/users-repository.contract.ts
index 15deca4..745b986 100644
--- a/packages/auth/src/__contracts__/users-repository.contract.ts
+++ b/packages/auth/src/__contracts__/users-repository.contract.ts
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { IUsersRepository } from "../application/repositories/users.repository.interface.js";
-import { userFactory } from "../__factories__/user.factory.js";
+import type { IUsersRepository } from "../application/repositories/users.repository.interface";
+import { userFactory } from "../__factories__/user.factory";
 
 export const usersRepositoryContract = defineContractSuite<IUsersRepository>(
   "IUsersRepository",
diff --git a/packages/auth/src/__factories__/index.ts b/packages/auth/src/__factories__/index.ts
index abe677e..9950df4 100644
--- a/packages/auth/src/__factories__/index.ts
+++ b/packages/auth/src/__factories__/index.ts
@@ -1,2 +1,2 @@
-export { userFactory } from "./user.factory.js";
-export { sessionFactory } from "./session.factory.js";
+export { userFactory } from "./user.factory";
+export { sessionFactory } from "./session.factory";
diff --git a/packages/auth/src/__factories__/session.factory.ts b/packages/auth/src/__factories__/session.factory.ts
index d8bf91f..8dd31db 100644
--- a/packages/auth/src/__factories__/session.factory.ts
+++ b/packages/auth/src/__factories__/session.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { Session } from "../entities/models/session.js";
+import type { Session } from "../entities/models/session";
 
 export const sessionFactory = defineFactory<Session>(({ sequence }) => ({
   id: `session-${sequence}`,
diff --git a/packages/auth/src/__factories__/user.factory.ts b/packages/auth/src/__factories__/user.factory.ts
index a1fc567..5adf712 100644
--- a/packages/auth/src/__factories__/user.factory.ts
+++ b/packages/auth/src/__factories__/user.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { User } from "../entities/models/user.js";
+import type { User } from "../entities/models/user";
 
 export const userFactory = defineFactory<User>(({ sequence }) => ({
   id: `user-${sequence}`,
diff --git a/packages/auth/src/__seeds__/dev.ts b/packages/auth/src/__seeds__/dev.ts
index 4eefec5..f4af597 100644
--- a/packages/auth/src/__seeds__/dev.ts
+++ b/packages/auth/src/__seeds__/dev.ts
@@ -1,5 +1,5 @@
-import { userFactory } from "../__factories__/user.factory.js";
-import type { User } from "../entities/models/user.js";
+import { userFactory } from "../__factories__/user.factory";
+import type { User } from "../entities/models/user";
 
 /**
  * Realistic auth seed for dev mode + storybook stories.
diff --git a/packages/blog/src/__contracts__/articles-repository.contract.ts b/packages/blog/src/__contracts__/articles-repository.contract.ts
index 05946eb..891f62a 100644
--- a/packages/blog/src/__contracts__/articles-repository.contract.ts
+++ b/packages/blog/src/__contracts__/articles-repository.contract.ts
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { IArticlesRepository } from "../application/repositories/articles.repository.interface.js";
-import { articleFactory } from "../__factories__/article.factory.js";
+import type { IArticlesRepository } from "../application/repositories/articles.repository.interface";
+import { articleFactory } from "../__factories__/article.factory";
 
 export const articlesRepositoryContract =
   defineContractSuite<IArticlesRepository>(
diff --git a/packages/blog/src/__factories__/article.factory.ts b/packages/blog/src/__factories__/article.factory.ts
index 0e9c3ac..2d1e92a 100644
--- a/packages/blog/src/__factories__/article.factory.ts
+++ b/packages/blog/src/__factories__/article.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { Article } from "../entities/models/article.js";
+import type { Article } from "../entities/models/article";
 
 export const articleFactory = defineFactory<Article>(({ sequence }) => ({
   id: `article-${sequence}`,
diff --git a/packages/blog/src/__factories__/index.ts b/packages/blog/src/__factories__/index.ts
index 2cf271f..670b663 100644
--- a/packages/blog/src/__factories__/index.ts
+++ b/packages/blog/src/__factories__/index.ts
@@ -1 +1 @@
-export { articleFactory } from "./article.factory.js";
+export { articleFactory } from "./article.factory";
diff --git a/packages/blog/src/__seeds__/dev.ts b/packages/blog/src/__seeds__/dev.ts
index 72e2215..03c03fe 100644
--- a/packages/blog/src/__seeds__/dev.ts
+++ b/packages/blog/src/__seeds__/dev.ts
@@ -1,5 +1,5 @@
-import { articleFactory } from "../__factories__/article.factory.js";
-import type { Article } from "../entities/models/article.js";
+import { articleFactory } from "../__factories__/article.factory";
+import type { Article } from "../entities/models/article";
 
 /**
  * Realistic blog seed for dev mode + storybook stories.
diff --git a/packages/core-cms/src/payload.config.ts b/packages/core-cms/src/payload.config.ts
index 72c6b74..4e32fbe 100644
--- a/packages/core-cms/src/payload.config.ts
+++ b/packages/core-cms/src/payload.config.ts
@@ -22,7 +22,7 @@ export default buildConfig({
     pool: {
       connectionString:
         process.env.DATABASE_URL ||
-        "postgresql://postgres:postgres@localhost:5432/template",
+        "postgresql://postgres:postgres@localhost:5433/template",
     },
   }),
   typescript: {
diff --git a/packages/core-testing/src/contract/index.ts b/packages/core-testing/src/contract/index.ts
index a428185..2a97bfe 100644
--- a/packages/core-testing/src/contract/index.ts
+++ b/packages/core-testing/src/contract/index.ts
@@ -1 +1,5 @@
-export { defineContractSuite, type ContractContext, type ContractSuite } from "./define-contract-suite.js";
+export {
+  defineContractSuite,
+  type ContractContext,
+  type ContractSuite,
+} from "./define-contract-suite";
diff --git a/packages/core-testing/src/factory/index.ts b/packages/core-testing/src/factory/index.ts
index b2e4d62..781a2ca 100644
--- a/packages/core-testing/src/factory/index.ts
+++ b/packages/core-testing/src/factory/index.ts
@@ -1 +1,5 @@
-export { defineFactory, type Factory, type FactoryContext } from "./define-factory.js";
+export {
+  defineFactory,
+  type Factory,
+  type FactoryContext,
+} from "./define-factory";
diff --git a/packages/core-testing/src/index.ts b/packages/core-testing/src/index.ts
index b332966..1589a0c 100644
--- a/packages/core-testing/src/index.ts
+++ b/packages/core-testing/src/index.ts
@@ -1,4 +1,4 @@
-export * from "./factory/index.js";
-export * from "./contract/index.js";
-export * from "./instrumentation/index.js";
-export * from "./rate-limit/index.js";
+export * from "./factory/index";
+export * from "./contract/index";
+export * from "./instrumentation/index";
+export * from "./rate-limit/index";
diff --git a/packages/core-testing/src/payload/index.ts b/packages/core-testing/src/payload/index.ts
index 36c49a8..a57f0f2 100644
--- a/packages/core-testing/src/payload/index.ts
+++ b/packages/core-testing/src/payload/index.ts
@@ -1,2 +1,2 @@
-export { stubPayloadConfig } from "./stub-config.js";
-export { mockPayloadModule } from "./mock-payload-module.js";
+export { stubPayloadConfig } from "./stub-config";
+export { mockPayloadModule } from "./mock-payload-module";
diff --git a/packages/core-testing/src/react/index.ts b/packages/core-testing/src/react/index.ts
index 7031436..3b4ee8f 100644
--- a/packages/core-testing/src/react/index.ts
+++ b/packages/core-testing/src/react/index.ts
@@ -1,2 +1,5 @@
-export { renderWithProviders, type RenderOptions } from "./render-with-providers.js";
-export { createMockTrpcClient } from "./mock-trpc.js";
+export {
+  renderWithProviders,
+  type RenderOptions,
+} from "./render-with-providers";
+export { createMockTrpcClient } from "./mock-trpc";
diff --git a/packages/marketing-pages/src/__contracts__/pages-repository.contract.ts b/packages/marketing-pages/src/__contracts__/pages-repository.contract.ts
index aae0b00..0deee32 100644
--- a/packages/marketing-pages/src/__contracts__/pages-repository.contract.ts
+++ b/packages/marketing-pages/src/__contracts__/pages-repository.contract.ts
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { IPagesRepository } from "../application/repositories/pages.repository.interface.js";
-import type { Page } from "../entities/models/page.js";
+import type { IPagesRepository } from "../application/repositories/pages.repository.interface";
+import type { Page } from "../entities/models/page";
 
 const SEED_DATE = new Date("2026-01-01T00:00:00.000Z");
 
diff --git a/packages/marketing-pages/src/__contracts__/site-settings-repository.contract.ts b/packages/marketing-pages/src/__contracts__/site-settings-repository.contract.ts
index c7e9874..b23ec7a 100644
--- a/packages/marketing-pages/src/__contracts__/site-settings-repository.contract.ts
+++ b/packages/marketing-pages/src/__contracts__/site-settings-repository.contract.ts
@@ -1,6 +1,6 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { ISiteSettingsRepository } from "../application/repositories/site-settings.repository.interface.js";
+import type { ISiteSettingsRepository } from "../application/repositories/site-settings.repository.interface";
 
 /**
  * Contract for ISiteSettingsRepository.
diff --git a/packages/marketing-pages/src/__factories__/index.ts b/packages/marketing-pages/src/__factories__/index.ts
index b00e38a..3c1dbe1 100644
--- a/packages/marketing-pages/src/__factories__/index.ts
+++ b/packages/marketing-pages/src/__factories__/index.ts
@@ -1,2 +1,2 @@
-export { pageFactory } from "./page.factory.js";
-export { siteSettingsFactory } from "./site-settings.factory.js";
+export { pageFactory } from "./page.factory";
+export { siteSettingsFactory } from "./site-settings.factory";
diff --git a/packages/marketing-pages/src/__factories__/page.factory.ts b/packages/marketing-pages/src/__factories__/page.factory.ts
index dd5a4f5..ac742cb 100644
--- a/packages/marketing-pages/src/__factories__/page.factory.ts
+++ b/packages/marketing-pages/src/__factories__/page.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { Page } from "../entities/models/page.js";
+import type { Page } from "../entities/models/page";
 
 export const pageFactory = defineFactory<Page>(({ sequence }) => ({
   id: `page-${sequence}`,
diff --git a/packages/marketing-pages/src/__factories__/site-settings.factory.ts b/packages/marketing-pages/src/__factories__/site-settings.factory.ts
index 4d6e5f5..43b5c13 100644
--- a/packages/marketing-pages/src/__factories__/site-settings.factory.ts
+++ b/packages/marketing-pages/src/__factories__/site-settings.factory.ts
@@ -1,6 +1,8 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { SiteSettings } from "../entities/models/site-settings.js";
+import type { SiteSettings } from "../entities/models/site-settings";
 
-export const siteSettingsFactory = defineFactory<SiteSettings>(({ sequence }) => ({
-  siteName: `Site ${sequence}`,
-}));
+export const siteSettingsFactory = defineFactory<SiteSettings>(
+  ({ sequence }) => ({
+    siteName: `Site ${sequence}`,
+  }),
+);
diff --git a/packages/marketing-pages/src/__seeds__/dev.ts b/packages/marketing-pages/src/__seeds__/dev.ts
index 191fa17..24972fe 100644
--- a/packages/marketing-pages/src/__seeds__/dev.ts
+++ b/packages/marketing-pages/src/__seeds__/dev.ts
@@ -1,7 +1,7 @@
-import { pageFactory } from "../__factories__/page.factory.js";
-import { siteSettingsFactory } from "../__factories__/site-settings.factory.js";
-import type { Page } from "../entities/models/page.js";
-import type { SiteSettings } from "../entities/models/site-settings.js";
+import { pageFactory } from "../__factories__/page.factory";
+import { siteSettingsFactory } from "../__factories__/site-settings.factory";
+import type { Page } from "../entities/models/page";
+import type { SiteSettings } from "../entities/models/site-settings";
 
 /**
  * Realistic marketing-pages seed for dev mode + storybook stories.
diff --git a/packages/media/src/__contracts__/media-repository.contract.ts b/packages/media/src/__contracts__/media-repository.contract.ts
index 71ab1a9..db0139c 100644
--- a/packages/media/src/__contracts__/media-repository.contract.ts
+++ b/packages/media/src/__contracts__/media-repository.contract.ts
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { IMediaRepository } from "../application/repositories/media.repository.interface.js";
-import { mediaFactory } from "../__factories__/media.factory.js";
+import type { IMediaRepository } from "../application/repositories/media.repository.interface";
+import { mediaFactory } from "../__factories__/media.factory";
 
 export const mediaRepositoryContract = defineContractSuite<IMediaRepository>(
   "IMediaRepository",
diff --git a/packages/media/src/__factories__/index.ts b/packages/media/src/__factories__/index.ts
index 628d3d6..6c49ed7 100644
--- a/packages/media/src/__factories__/index.ts
+++ b/packages/media/src/__factories__/index.ts
@@ -1,2 +1,2 @@
-export { mediaFactory } from "./media.factory.js";
-export type { Media } from "../entities/models/media.js";
+export { mediaFactory } from "./media.factory";
+export type { Media } from "../entities/models/media";
diff --git a/packages/media/src/__seeds__/dev.ts b/packages/media/src/__seeds__/dev.ts
index 222a3d8..9b78745 100644
--- a/packages/media/src/__seeds__/dev.ts
+++ b/packages/media/src/__seeds__/dev.ts
@@ -1,5 +1,5 @@
-import { mediaFactory } from "../__factories__/media.factory.js";
-import type { Media } from "../entities/models/media.js";
+import { mediaFactory } from "../__factories__/media.factory";
+import type { Media } from "../entities/models/media";
 
 /**
  * Realistic media seed for dev mode + storybook stories.
diff --git a/packages/navigation/src/__contracts__/header-repository.contract.ts b/packages/navigation/src/__contracts__/header-repository.contract.ts
index b7ebc25..4d4f335 100644
--- a/packages/navigation/src/__contracts__/header-repository.contract.ts
+++ b/packages/navigation/src/__contracts__/header-repository.contract.ts
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { IHeaderRepository } from "../application/repositories/header.repository.interface.js";
-import type { Header } from "../entities/models/header.js";
+import type { IHeaderRepository } from "../application/repositories/header.repository.interface";
+import type { Header } from "../entities/models/header";
 
 /**
  * Known fixtures that every implementation's `buildSubject` must pre-seed.
diff --git a/packages/navigation/src/__factories__/header.factory.ts b/packages/navigation/src/__factories__/header.factory.ts
index 8732e09..5ca6e22 100644
--- a/packages/navigation/src/__factories__/header.factory.ts
+++ b/packages/navigation/src/__factories__/header.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { Header } from "../entities/models/header.js";
+import type { Header } from "../entities/models/header";
 
 export const headerFactory = defineFactory<Header>(({ sequence }) => ({
   logoId: `logo-${sequence}`,
diff --git a/packages/navigation/src/__factories__/index.ts b/packages/navigation/src/__factories__/index.ts
index 8c55595..43a09f6 100644
--- a/packages/navigation/src/__factories__/index.ts
+++ b/packages/navigation/src/__factories__/index.ts
@@ -1,2 +1,2 @@
-export { headerFactory } from "./header.factory.js";
-export { navItemFactory } from "./nav-item.factory.js";
+export { headerFactory } from "./header.factory";
+export { navItemFactory } from "./nav-item.factory";
diff --git a/packages/navigation/src/__factories__/nav-item.factory.ts b/packages/navigation/src/__factories__/nav-item.factory.ts
index e636614..ffb211f 100644
--- a/packages/navigation/src/__factories__/nav-item.factory.ts
+++ b/packages/navigation/src/__factories__/nav-item.factory.ts
@@ -1,5 +1,5 @@
 import { defineFactory } from "@repo/core-testing/factory";
-import type { HeaderItem } from "../entities/models/header.js";
+import type { HeaderItem } from "../entities/models/header";
 
 export const navItemFactory = defineFactory<HeaderItem>(({ sequence }) => ({
   label: `Item ${sequence}`,
diff --git a/packages/navigation/src/__seeds__/dev.ts b/packages/navigation/src/__seeds__/dev.ts
index 8e028c3..6264855 100644
--- a/packages/navigation/src/__seeds__/dev.ts
+++ b/packages/navigation/src/__seeds__/dev.ts
@@ -1,6 +1,6 @@
-import { headerFactory } from "../__factories__/header.factory.js";
-import { navItemFactory } from "../__factories__/nav-item.factory.js";
-import type { Header } from "../entities/models/header.js";
+import { headerFactory } from "../__factories__/header.factory";
+import { navItemFactory } from "../__factories__/nav-item.factory";
+import type { Header } from "../entities/models/header";
 
 /**
  * Realistic navigation seed for dev mode + storybook stories.
@@ -20,7 +20,11 @@ export function buildDevHeader(): Header {
       navItemFactory.build({ label: "Home", href: "/", external: false }),
       navItemFactory.build({ label: "Blog", href: "/blog", external: false }),
       navItemFactory.build({ label: "About", href: "/about", external: false }),
-      navItemFactory.build({ label: "Pricing", href: "/pricing", external: false }),
+      navItemFactory.build({
+        label: "Pricing",
+        href: "/pricing",
+        external: false,
+      }),
     ],
   });
 }
diff --git a/turbo/generators/templates/feature/src/__contracts__/entity-repository.contract.ts.hbs b/turbo/generators/templates/feature/src/__contracts__/entity-repository.contract.ts.hbs
index 7c3b4c4..3e5f635 100644
--- a/turbo/generators/templates/feature/src/__contracts__/entity-repository.contract.ts.hbs
+++ b/turbo/generators/templates/feature/src/__contracts__/entity-repository.contract.ts.hbs
@@ -1,7 +1,7 @@
 import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
-import type { I{{pascalCase entity}}Repository } from "../application/repositories/{{kebabCase entity}}.repository.interface.js";
-import type { {{pascalCase entity}} } from "../entities/models/{{kebabCase entity}}.js";
+import type { I{{pascalCase entity}}Repository } from "../application/repositories/{{kebabCase entity}}.repository.interface";
+import type { {{pascalCase entity}} } from "../entities/models/{{kebabCase entity}}";
 
 /**
  * Known fixtures every implementation's `buildSubject` must pre-seed.
diff --git a/turbo/generators/templates/feature/src/__seeds__/dev.ts.hbs b/turbo/generators/templates/feature/src/__seeds__/dev.ts.hbs
index af5abc4..37bd3c2 100644
--- a/turbo/generators/templates/feature/src/__seeds__/dev.ts.hbs
+++ b/turbo/generators/templates/feature/src/__seeds__/dev.ts.hbs
@@ -1,4 +1,4 @@
-import type { {{pascalCase entity}} } from "../entities/models/{{kebabCase entity}}.js";
+import type { {{pascalCase entity}} } from "../entities/models/{{kebabCase entity}}";
 
 /**
  * Realistic dev seed for `bindDevSeed{{pascalCase name}}`.