feat(non-loanable-devices): implement non-loanable device management

- Add non_loanable_devices table to database schema
- Add web interface routes: /non_loanable_devices, /add_non_loanable_device, /edit_non_loanable_device, /delete_non_loanable_device
- Add CLI menu options 8-10 for non-loanable device management
- Add templates for non-loanable device CRUD operations
- Update README.md with new feature documentation
- Update REQUIREMENTS.md marking non-loanable devices as implemented
- Add gestiontablets.sh script

Implements: #porDefinir Registrar nuevos dispositivos no prestables

minimal_app.py

@@ -44,6 +44,22 @@ def init_db():
         )
     ''')
     
+    # Create non_loanable_devices table
+    cursor.execute('''
+        CREATE TABLE IF NOT EXISTS non_loanable_devices (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            brand TEXT NOT NULL,
+            model TEXT NOT NULL,
+            serial_number TEXT UNIQUE NOT NULL,
+            device_type TEXT NOT NULL,
+            location TEXT,
+            status TEXT DEFAULT 'available',
+            notes TEXT,
+            purchase_date TEXT,
+            purchase_cost REAL
+        )
+    ''')
+    
     conn.commit()
     conn.close()
 
@@ -202,6 +218,59 @@ def show_loan_history():
     
     conn.close()
 
+
+def add_non_loanable_device(brand, model, serial_number, device_type, location='', notes='', purchase_date='', purchase_cost=None):
+    """Add a new non-loanable device to inventory"""
+    conn = sqlite3.connect('tablets.db')
+    cursor = conn.cursor()
+    
+    try:
+        cursor.execute('''
+            INSERT INTO non_loanable_devices 
+            (brand, model, serial_number, device_type, location, status, notes, purchase_date, purchase_cost)
+            VALUES (?, ?, ?, ?, ?, 'available', ?, ?, ?)
+        ''', (brand, model, serial_number, device_type, location, notes, purchase_date, purchase_cost))
+        conn.commit()
+        print(f"✓ Added non-loanable device: {brand} {model} ({serial_number}) - Type: {device_type}")
+    except sqlite3.IntegrityError:
+        print(f"✗ Error: Serial number {serial_number} already exists")
+    finally:
+        conn.close()
+
+
+def show_non_loanable_devices():
+    """Show all non-loanable devices"""
+    conn = sqlite3.connect('tablets.db')
+    cursor = conn.cursor()
+    
+    cursor.execute("SELECT id, brand, model, serial_number, device_type, location, status FROM non_loanable_devices")
+    devices = cursor.fetchall()
+    
+    print("\n=== Non-Loanable Devices ===")
+    if devices:
+        for device in devices:
+            print(f"ID: {device[0]}, Type: {device[4]}, {device[1]} {device[2]} ({device[3]}), Location: {device[5] or 'N/A'}, Status: {device[6]}")
+    else:
+        print("No non-loanable devices")
+    
+    conn.close()
+
+
+def delete_non_loanable_device(device_id):
+    """Delete a non-loanable device"""
+    conn = sqlite3.connect('tablets.db')
+    cursor = conn.cursor()
+    
+    cursor.execute("DELETE FROM non_loanable_devices WHERE id = ?", (device_id,))
+    conn.commit()
+    
+    if cursor.rowcount > 0:
+        print(f"✓ Non-loanable device {device_id} deleted")
+    else:
+        print(f"✗ Error: Device {device_id} not found")
+    
+    conn.close()
+
 def main():
     """Main menu"""
     init_db()
@@ -218,9 +287,12 @@ def main():
         print("5. Show Available Tablets")
         print("6. Show Active Loans")
         print("7. Show Loan History")
-        print("8. Exit")
+        print("8. Add Non-Loanable Device")
+        print("9. Show Non-Loanable Devices")
+        print("10. Delete Non-Loanable Device")
+        print("11. Exit")
         
-        choice = input("Enter your choice (1-8): ")
+        choice = input("Enter your choice (1-11): ")
         
         if choice == '1':
             print("\n=== Add Tablet ===")
@@ -269,6 +341,28 @@ def main():
             show_loan_history()
         
         elif choice == '8':
+            print("\n=== Add Non-Loanable Device ===")
+            brand = input("Brand: ")
+            model = input("Model: ")
+            serial_number = input("Serial Number: ")
+            device_type = input("Device Type (e.g., projector, monitor): ")
+            location = input("Location (optional): ")
+            notes = input("Notes (optional): ")
+            add_non_loanable_device(brand, model, serial_number, device_type, location, notes)
+        
+        elif choice == '9':
+            show_non_loanable_devices()
+        
+        elif choice == '10':
+            print("\n=== Delete Non-Loanable Device ===")
+            show_non_loanable_devices()
+            device_id = input("Enter Device ID to delete: ")
+            try:
+                delete_non_loanable_device(int(device_id))
+            except ValueError:
+                print("✗ Error: Invalid ID format")
+        
+        elif choice == '11':
             print("Goodbye!")
             break