diff --git a/packages/auth/src/application/use-cases/sign-in.use-case.ts b/packages/auth/src/application/use-cases/sign-in.use-case.ts
index abc..def 100644
--- a/packages/auth/src/application/use-cases/sign-in.use-case.ts
+++ b/packages/auth/src/application/use-cases/sign-in.use-case.ts
@@ -1,0 +2,2 @@
+const a = 1;
+const b = 2;
@@ -4,1 +5,2 @@
-old
+const c = 3;
+const d = 4;
diff --git a/packages/auth/src/application/use-cases/sign-in.use-case.test.ts b/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
index abc..def 100644
--- a/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
+++ b/packages/auth/src/application/use-cases/sign-in.use-case.test.ts
@@ -10,0 +11 @@
+new test line
diff --git a/packages/auth/src/entities/models/user.ts b/packages/auth/src/entities/models/user.ts
index abc..def 100644
--- a/packages/auth/src/entities/models/user.ts
+++ b/packages/auth/src/entities/models/user.ts
@@ -2,1 +2,1 @@
-old
+modified
diff --git a/packages/blog/src/application/use-cases/get-article.use-case.ts b/packages/blog/src/application/use-cases/get-article.use-case.ts
index abc..def 100644
--- a/packages/blog/src/application/use-cases/get-article.use-case.ts
+++ b/packages/blog/src/application/use-cases/get-article.use-case.ts
@@ -11,0 +12 @@
+const uncovered = true;
diff --git a/packages/media/src/application/use-cases/upload.use-case.ts b/packages/media/src/application/use-cases/upload.use-case.ts
new file mode 100644
index 0000000..abc
--- /dev/null
+++ b/packages/media/src/application/use-cases/upload.use-case.ts
@@ -0,0 +1,5 @@
+export const uploadUseCase = () => {
+  return "uploaded";
+};
+// Line 4
+// Line 5
diff --git a/CLAUDE.md b/CLAUDE.md
index abc..def 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,1 +1,2 @@
-old text
+new text
+more text
