diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,27 @@
+# Dependency directories
+node_modules/
+
+# Production builds
+dist/
+build/
+
+# IDEs and OS files
+.idea/
+.vscode/
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# Upload and storage directories (CRITICAL: Ignore to prevent git clean -fd from deleting them)
+server/uploads/
+storage/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
diff --git a/server/uploads/exams/1/papers/2/main.pdf b/server/uploads/exams/1/papers/2/main.pdf
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diff --git a/server/uploads/exams/1/papers/2/resources/Project_Java_web_Application_Point(GD) - Trang tính1.pdf b/server/uploads/exams/1/papers/2/resources/Project_Java_web_Application_Point(GD) - Trang tính1.pdf
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diff --git a/server/uploads/exams/1/papers/2/resources/TÀI LIỆU ĐẶC TẢ YÊU CẦU (SRS) - PROJECT JAVA WEB (GD)_2.pdf b/server/uploads/exams/1/papers/2/resources/TÀI LIỆU ĐẶC TẢ YÊU CẦU (SRS) - PROJECT JAVA WEB (GD)_2.pdf
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diff --git a/server/uploads/exams/2/papers/3/resources/gunny-admin-profiles-20260629-150338.json b/server/uploads/exams/2/papers/3/resources/gunny-admin-profiles-20260629-150338.json
deleted file mode 100644
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--- a/server/uploads/exams/2/papers/3/resources/gunny-admin-profiles-20260629-150338.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "version": 1,
-  "exportedAt": "2026-06-29T08:03:38.6066807Z",
-  "profiles": [
-    {
-      "id": "4e08fbd2-15ff-4f37-ba79-44d9f633a248",
-      "name": "Gà Chill",
-      "createdAt": "2026-06-27T03:50:45.9698419Z",
-      "updatedAt": "2026-06-29T01:46:39.7112252Z",
-      "sshHost": "103.245.236.191",
-      "sshPort": 22,
-      "sshUser": "Administrator",
-      "sshPassword": "pass@123123aA@",
-      "remoteDbHost": "127.0.0.1",
-      "remoteDbPort": 1433,
-      "dbUser": "sa",
-      "dbPassword": "123123aA@",
-      "dbTank41": "Db_Tank41",
-      "dbTank": "Db_Tank",
-      "dbMember": "Db_Member",
-      "remoteRequestHost": "127.0.0.1",
-      "remoteRequestPort": 81,
-      "resourceUrl": "https://resource.gunnychill.net",
-      "deployRoot": "C:\\Gunny",
-      "devRootXml": "E:\\gunny3"
-    }
-  ]
-}
\ No newline at end of file
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diff --git a/server/uploads/exams/2/submissions/596/20260630_125349_596.zip b/server/uploads/exams/2/submissions/596/20260630_125349_596.zip
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diff --git a/server/uploads/exams/3/papers/4/resources/Gemini_Generated_Image_5lgiwd5lgiwd5lgi-removebg-preview.png b/server/uploads/exams/3/papers/4/resources/Gemini_Generated_Image_5lgiwd5lgiwd5lgi-removebg-preview.png
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diff --git a/server/uploads/exams/3/papers/4/resources/gunny-admin-profiles-20260629-150338.json b/server/uploads/exams/3/papers/4/resources/gunny-admin-profiles-20260629-150338.json
deleted file mode 100644
index 2bfc0ce..0000000
--- a/server/uploads/exams/3/papers/4/resources/gunny-admin-profiles-20260629-150338.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "version": 1,
-  "exportedAt": "2026-06-29T08:03:38.6066807Z",
-  "profiles": [
-    {
-      "id": "4e08fbd2-15ff-4f37-ba79-44d9f633a248",
-      "name": "Gà Chill",
-      "createdAt": "2026-06-27T03:50:45.9698419Z",
-      "updatedAt": "2026-06-29T01:46:39.7112252Z",
-      "sshHost": "103.245.236.191",
-      "sshPort": 22,
-      "sshUser": "Administrator",
-      "sshPassword": "pass@123123aA@",
-      "remoteDbHost": "127.0.0.1",
-      "remoteDbPort": 1433,
-      "dbUser": "sa",
-      "dbPassword": "123123aA@",
-      "dbTank41": "Db_Tank41",
-      "dbTank": "Db_Tank",
-      "dbMember": "Db_Member",
-      "remoteRequestHost": "127.0.0.1",
-      "remoteRequestPort": 81,
-      "resourceUrl": "https://resource.gunnychill.net",
-      "deployRoot": "C:\\Gunny",
-      "devRootXml": "E:\\gunny3"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/server/uploads/exams/5/papers/5/main.pdf b/server/uploads/exams/5/papers/5/main.pdf
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diff --git a/server/uploads/exams/5/papers/5/resources/main (1).pdf b/server/uploads/exams/5/papers/5/resources/main (1).pdf
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diff --git a/server/uploads/exams/6/papers/6/resources/Gemini_Generated_Image_agi111agi111agi1 (1).png b/server/uploads/exams/6/papers/6/resources/Gemini_Generated_Image_agi111agi111agi1 (1).png
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diff --git a/server/uploads/exams/6/papers/6/resources/gunny-admin-profiles-20260629-150338.json b/server/uploads/exams/6/papers/6/resources/gunny-admin-profiles-20260629-150338.json
deleted file mode 100644
index 2bfc0ce..0000000
--- a/server/uploads/exams/6/papers/6/resources/gunny-admin-profiles-20260629-150338.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "version": 1,
-  "exportedAt": "2026-06-29T08:03:38.6066807Z",
-  "profiles": [
-    {
-      "id": "4e08fbd2-15ff-4f37-ba79-44d9f633a248",
-      "name": "Gà Chill",
-      "createdAt": "2026-06-27T03:50:45.9698419Z",
-      "updatedAt": "2026-06-29T01:46:39.7112252Z",
-      "sshHost": "103.245.236.191",
-      "sshPort": 22,
-      "sshUser": "Administrator",
-      "sshPassword": "pass@123123aA@",
-      "remoteDbHost": "127.0.0.1",
-      "remoteDbPort": 1433,
-      "dbUser": "sa",
-      "dbPassword": "123123aA@",
-      "dbTank41": "Db_Tank41",
-      "dbTank": "Db_Tank",
-      "dbMember": "Db_Member",
-      "remoteRequestHost": "127.0.0.1",
-      "remoteRequestPort": 81,
-      "resourceUrl": "https://resource.gunnychill.net",
-      "deployRoot": "C:\\Gunny",
-      "devRootXml": "E:\\gunny3"
-    }
-  ]
-}
\ No newline at end of file
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