diff --git a/app.py b/app.py
index 36721a06..7eaa8af3 100644
--- a/app.py
+++ b/app.py
@@ -1,14 +1,63 @@
-import os
-from flask import Flask
+from flask import Flask, render_template, request, redirect, url_for, session, flash
+
 app = Flask(__name__)
+app.secret_key = 'rahasia123'
+
+# Simulasi database
+USERS = {'admin': 'admin123'}
+ITEMS = []  # Menyimpan item berupa dict {'name': ..., 'description': ...}
+
+@app.route('/')
+def index():
+    if 'user' in session:
+        return redirect(url_for('dashboard'))
+    return redirect(url_for('login'))
+
+@app.route('/login', methods=['GET', 'POST'])
+def login():
+    if request.method == 'POST':
+        username = request.form['username']
+        password = request.form['password']
+        if USERS.get(username) == password:
+            session['user'] = username
+            return redirect(url_for('dashboard'))
+        else:
+            flash("Login gagal! Username atau password salah.")
+    return render_template('login.html')
+
+@app.route('/dashboard')
+def dashboard():
+    if 'user' not in session:
+        return redirect(url_for('login'))
+    return render_template('dashboard.html', items=ITEMS)
+
+@app.route('/create', methods=['GET', 'POST'])
+def create():
+    if 'user' not in session:
+        return redirect(url_for('login'))
+    
+    if request.method == 'POST':
+        name = request.form.get('name', '').strip()
+        description = request.form.get('description', '').strip()
+        
+        if name and description:
+            ITEMS.append({'name': name, 'description': description})
+            return redirect(url_for('success'))
+        else:
+            flash("Semua field wajib diisi!")
+    
+    return render_template('create.html')
 
-@app.route("/")
-def main():
-    return "Welcome!"
+@app.route('/success')
+def success():
+    if 'user' not in session:
+        return redirect(url_for('login'))
+    return render_template('success.html')
 
-@app.route('/how are you')
-def hello():
-    return 'I am good, how about you?'
+@app.route('/logout')
+def logout():
+    session.pop('user', None)
+    return render_template('logout.html')
 
-if __name__ == "__main__":
-    app.run(host="0.0.0.0", port=8080)
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0', port=5000)
diff --git a/docs/uml/class-diagram.puml b/docs/uml/class-diagram.puml
new file mode 100644
index 00000000..94f50f04
--- /dev/null
+++ b/docs/uml/class-diagram.puml
@@ -0,0 +1,35 @@
+@startuml
+
+class User {
+    +id: int
+    +username: str
+    +email: str
+    +password: str
+}
+
+class RegisterForm {
+    +username: str
+    +email: str
+    +password: str
+    +submit(): void
+}
+
+class LoginForm {
+    +username: str
+    +password: str
+    +submit(): void
+}
+
+class Item {
+    +id: int
+    +name: str
+    +description: str
+    +price: float
+    +create(): void
+}
+
+User "1" --> "*" Item : owns
+RegisterForm ..> User : <<uses>>
+LoginForm ..> User : <<uses>>
+
+@enduml
\ No newline at end of file
diff --git a/docs/uml/sequence-create-item.puml b/docs/uml/sequence-create-item.puml
new file mode 100644
index 00000000..cb54285a
--- /dev/null
+++ b/docs/uml/sequence-create-item.puml
@@ -0,0 +1,13 @@
+@startuml sequence-create-item
+actor User
+participant "Create Item Page" as ItemPage
+participant "routes.py" as Route
+participant "models.py" as ItemModel
+
+User -> ItemPage : open form
+User -> ItemPage : input item data
+ItemPage -> Route : POST /create
+Route -> ItemModel : save new item
+ItemModel --> Route : success
+Route --> ItemPage : show confirmation
+@enduml
diff --git a/docs/uml/sequence-login.puml b/docs/uml/sequence-login.puml
new file mode 100644
index 00000000..6f64e8eb
--- /dev/null
+++ b/docs/uml/sequence-login.puml
@@ -0,0 +1,17 @@
+@startuml sequence-login
+actor User
+participant "Login Page" as LoginPage
+participant "routes.py" as Route
+participant "models.py" as UserModel
+
+User -> LoginPage : open form
+User -> LoginPage : input username & password
+LoginPage -> Route : POST /login
+Route -> UserModel : validate_user()
+UserModel --> Route : user exists or not
+alt valid
+  Route --> LoginPage : redirect to dashboard
+else invalid
+  Route --> LoginPage : show error
+end
+@enduml
\ No newline at end of file
diff --git a/evaluasi/pull-request/Cuplikan layar 2025-06-29 140057.png b/evaluasi/pull-request/Cuplikan layar 2025-06-29 140057.png
new file mode 100644
index 00000000..d2713d68
Binary files /dev/null and b/evaluasi/pull-request/Cuplikan layar 2025-06-29 140057.png differ
diff --git a/evaluasi/pull-request/blackbox/blackbox_test.side b/evaluasi/pull-request/blackbox/blackbox_test.side
new file mode 100644
index 00000000..85a4bfd9
--- /dev/null
+++ b/evaluasi/pull-request/blackbox/blackbox_test.side
@@ -0,0 +1,219 @@
+{
+  "id": "f0cc3a3c-3756-41c4-b840-a7b76891999a",
+  "version": "2.0",
+  "name": "BlackboxTest",
+  "url": "https://musical-orbit-v6ggwwr7j5vpcx5g5-5000.app.github.dev",
+  "tests": [{
+    "id": "d8dbcc04-7dae-4d8c-81e1-18dcf1ef3343",
+    "name": "blacboxtest",
+    "commands": [{
+      "id": "529828f6-aabc-4c75-af03-64aa6d3fbfeb",
+      "comment": "",
+      "command": "open",
+      "target": "/",
+      "targets": [],
+      "value": ""
+    }, {
+      "id": "0814ce74-32c9-44e4-8891-cd0ca5aab66b",
+      "comment": "",
+      "command": "setWindowSize",
+      "target": "1280x691",
+      "targets": [],
+      "value": ""
+    }, {
+      "id": "d67fa136-0241-4a79-b76c-45890b029419",
+      "comment": "",
+      "command": "click",
+      "target": "css=.btn-primary",
+      "targets": [
+        ["css=.btn-primary", "css:finder"],
+        ["xpath=//button[@type='submit']", "xpath:attributes"],
+        ["xpath=//button", "xpath:position"],
+        ["xpath=//button[contains(.,'Continue')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }, {
+      "id": "357a75a0-7c1c-4e9d-a763-9a5e5eb6a811",
+      "comment": "",
+      "command": "click",
+      "target": "css=form",
+      "targets": [
+        ["css=form", "css:finder"],
+        ["xpath=//form", "xpath:position"]
+      ],
+      "value": ""
+    }, {
+      "id": "74cd534c-7f2d-4c62-acdd-012b7713baaf",
+      "comment": "",
+      "command": "click",
+      "target": "name=username",
+      "targets": [
+        ["name=username", "name"],
+        ["css=input:nth-child(2)", "css:finder"],
+        ["xpath=//input[@name='username']", "xpath:attributes"],
+        ["xpath=//input", "xpath:position"]
+      ],
+      "value": ""
+    }, {
+      "id": "6f234b0f-f4de-4f45-8cd3-321512e8616e",
+      "comment": "",
+      "command": "type",
+      "target": "name=username",
+      "targets": [
+        ["name=username", "name"],
+        ["css=input:nth-child(2)", "css:finder"],
+        ["xpath=//input[@name='username']", "xpath:attributes"],
+        ["xpath=//input", "xpath:position"]
+      ],
+      "value": "admin"
+    }, {
+      "id": "6414d6a7-c871-4e29-87a9-da8a42caf573",
+      "comment": "",
+      "command": "click",
+      "target": "name=password",
+      "targets": [
+        ["name=password", "name"],
+        ["css=input:nth-child(6)", "css:finder"],
+        ["xpath=//input[@name='password']", "xpath:attributes"],
+        ["xpath=//input[2]", "xpath:position"]
+      ],
+      "value": ""
+    }, {
+      "id": "88bcfaaf-e083-45dd-8396-804709ad90cc",
+      "comment": "",
+      "command": "type",
+      "target": "name=password",
+      "targets": [
+        ["name=password", "name"],
+        ["css=input:nth-child(6)", "css:finder"],
+        ["xpath=//input[@name='password']", "xpath:attributes"],
+        ["xpath=//input[2]", "xpath:position"]
+      ],
+      "value": "admin123"
+    }, {
+      "id": "449cdba6-19c6-46a6-b190-ca2969899da2",
+      "comment": "",
+      "command": "click",
+      "target": "css=button",
+      "targets": [
+        ["css=button", "css:finder"],
+        ["xpath=//button[@type='submit']", "xpath:attributes"],
+        ["xpath=//button", "xpath:position"],
+        ["xpath=//button[contains(.,'Login')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }, {
+      "id": "07b52b82-9b29-4736-a0d3-dcecedade6ba",
+      "comment": "",
+      "command": "click",
+      "target": "linkText=Tambah Item",
+      "targets": [
+        ["linkText=Tambah Item", "linkText"],
+        ["css=.button:nth-child(2)", "css:finder"],
+        ["xpath=//a[contains(text(),'Tambah Item')]", "xpath:link"],
+        ["xpath=//a[contains(@href, '/create')]", "xpath:href"],
+        ["xpath=//a", "xpath:position"],
+        ["xpath=//a[contains(.,'Tambah Item')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }, {
+      "id": "6b62c302-03cb-46d2-8718-7104cfa8d621",
+      "comment": "",
+      "command": "click",
+      "target": "name=name",
+      "targets": [
+        ["name=name", "name"],
+        ["css=input:nth-child(2)", "css:finder"],
+        ["xpath=//input[@name='name']", "xpath:attributes"],
+        ["xpath=//input", "xpath:position"]
+      ],
+      "value": ""
+    }, {
+      "id": "799dd1e7-7a85-4298-917f-7f05f70433cf",
+      "comment": "",
+      "command": "type",
+      "target": "name=name",
+      "targets": [
+        ["name=name", "name"],
+        ["css=input:nth-child(2)", "css:finder"],
+        ["xpath=//input[@name='name']", "xpath:attributes"],
+        ["xpath=//input", "xpath:position"]
+      ],
+      "value": "kudalumping"
+    }, {
+      "id": "e48743fb-8d04-4585-a54b-b48994fa5e9b",
+      "comment": "",
+      "command": "click",
+      "target": "name=description",
+      "targets": [
+        ["name=description", "name"],
+        ["css=input:nth-child(6)", "css:finder"],
+        ["xpath=//input[@name='description']", "xpath:attributes"],
+        ["xpath=//input[2]", "xpath:position"]
+      ],
+      "value": ""
+    }, {
+      "id": "2668910a-8a18-4292-bc41-6f2bf022d28f",
+      "comment": "",
+      "command": "type",
+      "target": "name=description",
+      "targets": [
+        ["name=description", "name"],
+        ["css=input:nth-child(6)", "css:finder"],
+        ["xpath=//input[@name='description']", "xpath:attributes"],
+        ["xpath=//input[2]", "xpath:position"]
+      ],
+      "value": "asliwonogiri"
+    }, {
+      "id": "a5c83a42-4171-47d0-9135-cf48b13f552d",
+      "comment": "",
+      "command": "click",
+      "target": "css=button",
+      "targets": [
+        ["css=button", "css:finder"],
+        ["xpath=//button[@type='submit']", "xpath:attributes"],
+        ["xpath=//button", "xpath:position"],
+        ["xpath=//button[contains(.,'Simpan')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }, {
+      "id": "d3a14603-9eed-43ad-8edf-35a41d478f4a",
+      "comment": "",
+      "command": "click",
+      "target": "linkText=Kembali ke Dashboard",
+      "targets": [
+        ["linkText=Kembali ke Dashboard", "linkText"],
+        ["css=a", "css:finder"],
+        ["xpath=//a[contains(text(),'Kembali ke Dashboard')]", "xpath:link"],
+        ["xpath=//a[contains(@href, '/dashboard')]", "xpath:href"],
+        ["xpath=//a", "xpath:position"],
+        ["xpath=//a[contains(.,'Kembali ke Dashboard')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }, {
+      "id": "4a8a5c9f-5f58-4d1c-8c4c-11916b07dd91",
+      "comment": "",
+      "command": "click",
+      "target": "linkText=Logout",
+      "targets": [
+        ["linkText=Logout", "linkText"],
+        ["css=.button:nth-child(3)", "css:finder"],
+        ["xpath=//a[contains(text(),'Logout')]", "xpath:link"],
+        ["xpath=//a[contains(@href, '/logout')]", "xpath:href"],
+        ["xpath=//a[2]", "xpath:position"],
+        ["xpath=//a[contains(.,'Logout')]", "xpath:innerText"]
+      ],
+      "value": ""
+    }]
+  }],
+  "suites": [{
+    "id": "1584523a-6821-4259-bf74-26b19bec3f2f",
+    "name": "Default Suite",
+    "persistSession": false,
+    "parallel": false,
+    "timeout": 300,
+    "tests": ["d8dbcc04-7dae-4d8c-81e1-18dcf1ef3343"]
+  }],
+  "urls": ["https://musical-orbit-v6ggwwr7j5vpcx5g5-5000.app.github.dev/"],
+  "plugins": []
+}
\ No newline at end of file
diff --git a/evaluasi/pull-request/blackbox/readme.md b/evaluasi/pull-request/blackbox/readme.md
new file mode 100644
index 00000000..8d0ab689
--- /dev/null
+++ b/evaluasi/pull-request/blackbox/readme.md
@@ -0,0 +1,10 @@
+## Black-box Testing – Selenium
+
+**Skenario yang diuji:**
+1. Login dengan akun valid
+2. Menambahkan data item baru
+3. Logout
+
+**Hasil:**  
+Semua skenario berhasil dijalankan (PASS)  
+Terekam dalam file `blackbox_test.side`
diff --git a/evaluasi/pull-request/lisensi/README.md b/evaluasi/pull-request/lisensi/README.md
new file mode 100644
index 00000000..64b60211
--- /dev/null
+++ b/evaluasi/pull-request/lisensi/README.md
@@ -0,0 +1,23 @@
+# 🔏 Etika & Lisensi
+
+## Lisensi Proyek Asli
+Proyek asli yang saya fork menggunakan **MIT License**.
+
+## Perubahan yang Saya Lakukan
+- Menambahkan fitur login dan tambah data item
+- Membuat diagram UML dan pengujian black-box
+- Melakukan usability study
+
+## Kompatibilitas Lisensi
+MIT License sangat permisif:
+- Memperbolehkan perubahan dan redistribusi
+- Tidak mewajibkan publikasi perubahan
+- Hanya meminta mencantumkan atribusi
+
+✅ **Perubahan saya 100% kompatibel dengan MIT License**
+
+## Etika Open Source
+Saya tetap:
+- Mencantumkan nama pembuat asli di bagian lisensi
+- Tidak menghapus hak cipta
+- Menambahkan dokumentasi perubahan yang dilakukan
diff --git a/evaluasi/pull-request/sus/README.md b/evaluasi/pull-request/sus/README.md
new file mode 100644
index 00000000..d900e5eb
--- /dev/null
+++ b/evaluasi/pull-request/sus/README.md
@@ -0,0 +1,25 @@
+# 📊 Usability Study – System Usability Scale (SUS)
+
+## 🔗 Aplikasi yang diuji
+https://musical-orbit-v6ggwwr7j5vpcx5g5-5000.app.github.dev/
+
+## 🧪 Metode
+- Metode: System Usability Scale (SUS)
+- Total Pertanyaan: 10
+- Skala: 1 (Sangat Tidak Setuju) – 5 (Sangat Setuju)
+- Responden: 3 orang
+
+## 🧮 Skor
+- Responden 1: 85.0
+- Responden 2: 77.5
+- Responden 3: 80.0
+- **Rata-rata SUS = 80.8**
+
+## ✅ Interpretasi
+- Rata-rata skor SUS 80.8 berada di kategori **“Excellent”**.
+- Aplikasi dianggap mudah dipakai, konsisten, dan tidak membingungkan.
+
+## 📊 Grafik
+(Lampirkan tangkapan grafik Google Form – atau export sebagai PNG)
+
+## 📁 Struktur Folder
diff --git a/evaluasi/pull-request/sus/hasil_sus.png b/evaluasi/pull-request/sus/hasil_sus.png
new file mode 100644
index 00000000..f3dc1d8e
Binary files /dev/null and b/evaluasi/pull-request/sus/hasil_sus.png differ
diff --git a/out/docs/uml/class-diagram/class-diagram.png b/out/docs/uml/class-diagram/class-diagram.png
new file mode 100644
index 00000000..b26ed787
Binary files /dev/null and b/out/docs/uml/class-diagram/class-diagram.png differ
diff --git a/out/docs/uml/sequence-create-item/sequence-create-item.png b/out/docs/uml/sequence-create-item/sequence-create-item.png
new file mode 100644
index 00000000..f8064c56
Binary files /dev/null and b/out/docs/uml/sequence-create-item/sequence-create-item.png differ
diff --git a/out/docs/uml/sequence-login/sequence-login.png b/out/docs/uml/sequence-login/sequence-login.png
new file mode 100644
index 00000000..4d695a10
Binary files /dev/null and b/out/docs/uml/sequence-login/sequence-login.png differ
diff --git a/templates/create.html b/templates/create.html
new file mode 100644
index 00000000..8e9ce676
--- /dev/null
+++ b/templates/create.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Tambah Item</title>
+</head>
+<body>
+  <h2>Form Tambah Item</h2>
+  <form method="POST">
+      <label>Nama Item:</label>
+      <input type="text" name="name" required><br><br>
+      <label>Deskripsi:</label>
+      <input type="text" name="description" required><br><br>
+      <button type="submit">Simpan</button>
+  </form>
+  <br>
+  <a href="{{ url_for('dashboard') }}">Kembali ke Dashboard</a>
+</body>
+</html>
diff --git a/templates/dashboard.html b/templates/dashboard.html
new file mode 100644
index 00000000..5395205d
--- /dev/null
+++ b/templates/dashboard.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Dashboard</title>
+  <style>
+    body { font-family: Arial; padding: 20px; }
+    .button {
+      background-color: #28a745;
+      color: white;
+      padding: 10px 16px;
+      text-decoration: none;
+      border-radius: 5px;
+      margin-right: 10px;
+    }
+    .button:hover {
+      background-color: #218838;
+    }
+  </style>
+</head>
+<body>
+  <h2>Selamat Datang, {{ session['user'] }}</h2>
+
+  <a class="button" href="{{ url_for('create') }}">Tambah Item</a>
+  <a class="button" href="{{ url_for('logout') }}">Logout</a>
+
+  <h3>Daftar Item:</h3>
+  <ul>
+    {% for item in items %}
+      <li><strong>{{ item['name'] }}</strong>: {{ item['description'] }}</li>
+    {% else %}
+      <li>Belum ada item.</li>
+    {% endfor %}
+  </ul>
+</body>
+</html>
diff --git a/templates/login.html b/templates/login.html
new file mode 100644
index 00000000..9893ae48
--- /dev/null
+++ b/templates/login.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<head><title>Login</title></head>
+<body>
+    <h2>Login</h2>
+    <form method="POST">
+        <label>Username:</label>
+        <input type="text" name="username" required><br><br>
+        <label>Password:</label>
+        <input type="password" name="password" required><br><br>
+        <button type="submit">Login</button>
+    </form>
+</body>
+</html>
+
diff --git a/templates/logout.html b/templates/logout.html
new file mode 100644
index 00000000..0c978891
--- /dev/null
+++ b/templates/logout.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+<head><title>Logout</title></head>
+<body>
+    <h2>Anda telah logout.</h2>
+    <a href="{{ url_for('login') }}">Login lagi</a>
+</body>
+</html>
diff --git a/templates/success.html b/templates/success.html
new file mode 100644
index 00000000..6dbba71e
--- /dev/null
+++ b/templates/success.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+<head><title>Sukses</title></head>
+<body>
+    <h2>Item berhasil ditambahkan!</h2>
+    <a href="{{ url_for('dashboard') }}">Kembali ke Dashboard</a>
+</body>
+</html>