Reorganize testing infrastructure and fix Oracle cursor loop syntax

Major changes:
- Fix cursor loop syntax in 04_import_comenzi.sql using BULK COLLECT pattern
- Remove obsolete test scripts (apply_fix.py, check_*.py, debug_functions.py, test_*.py)
- Add comprehensive README.md files for api/ and api/tests/ directories
- Keep only essential testing scripts (final_validation.py, test_syntax.py)
- Update PRD.md with latest project status

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

test_import_comanda.py

@@ -0,0 +1,114 @@
+#!/usr/bin/env python3
+"""
+Test script for updated IMPORT_COMENZI package
+Tests the fixed FOR LOOP issue
+"""
+
+import os
+import sys
+import oracledb
+from dotenv import load_dotenv
+
+# Load environment variables
+load_dotenv('/mnt/e/proiecte/vending/gomag-vending/api/.env')
+
+def test_import_comanda():
+    """Test the updated importa_comanda function"""
+    
+    # Connection parameters
+    user = os.environ['ORACLE_USER']  
+    password = os.environ['ORACLE_PASSWORD']
+    dsn = os.environ['ORACLE_DSN']
+    
+    try:
+        # Connect to Oracle
+        print("🔗 Conectare la Oracle...")
+        with oracledb.connect(user=user, password=password, dsn=dsn) as conn:
+            with conn.cursor() as cursor:
+                
+                print("\n📋 Test 1: Recompilare Package PACK_IMPORT_COMENZI")
+                
+                # Read and execute the updated package
+                with open('/mnt/e/proiecte/vending/gomag-vending/api/database-scripts/04_import_comenzi.sql', 'r') as f:
+                    sql_script = f.read()
+                
+                cursor.execute(sql_script)
+                print("✅ Package recompiled successfully")
+                
+                print("\n📋 Test 2: Import comandă completă cu multiple articole")
+                
+                # Test data - comandă cu 2 articole (CAFE100 + SET01)
+                test_json = '''[
+                    {"sku": "CAFE100", "cantitate": 2, "pret": 50.00},
+                    {"sku": "SET01", "cantitate": 1, "pret": 120.00}
+                ]'''
+                
+                test_partner_id = 878  # Partner din teste anterioare
+                test_order_num = "TEST-MULTI-" + str(int(os.time()))
+                
+                # Call importa_comanda
+                cursor.execute("""
+                    SELECT PACK_IMPORT_COMENZI.importa_comanda_web(
+                        :p_nr_comanda_ext,
+                        SYSDATE,
+                        :p_id_partener, 
+                        :p_json_articole,
+                        NULL,
+                        'Test import multiple articole'
+                    ) AS id_comanda FROM dual
+                """, {
+                    'p_nr_comanda_ext': test_order_num,
+                    'p_id_partener': test_partner_id,
+                    'p_json_articole': test_json
+                })
+                
+                result = cursor.fetchone()
+                if result and result[0] > 0:
+                    comanda_id = result[0]
+                    print(f"✅ Comandă importată cu succes! ID: {comanda_id}")
+                    
+                    # Verifică articolele adăugate
+                    cursor.execute("""
+                        SELECT ca.id_articol, na.codmat, ca.cantitate, ca.pret 
+                        FROM comenzi_articole ca
+                        JOIN nom_articole na ON na.id_articol = ca.id_articol
+                        WHERE ca.id_comanda = :id_comanda
+                        ORDER BY ca.id_articol
+                    """, {'id_comanda': comanda_id})
+                    
+                    articole = cursor.fetchall()
+                    print(f"\n📦 Articole în comandă (Total: {len(articole)}):")
+                    for art in articole:
+                        print(f"   • CODMAT: {art[1]}, Cantitate: {art[2]}, Preț: {art[3]}")
+                        
+                    # Expected: 
+                    # - CAFFE (din CAFE100: 2 * 10 = 20 bucăți)
+                    # - CAFE-SET (din SET01: 2 * 60% = 72.00)  
+                    # - FILT-SET (din SET01: 1 * 40% = 48.00)
+                    print("\n🎯 Expected:")
+                    print("   • CAFFE: 20 bucăți (reîmpachetare 2*10)")
+                    print("   • CAFE-SET: 2 bucăți, preț 36.00 (120*60%/2)")
+                    print("   • FILT-SET: 1 bucăți, preț 48.00 (120*40%/1)")
+                    
+                else:
+                    print("❌ Import eșuat")
+                    # Check for errors
+                    cursor.execute("SELECT PACK_IMPORT_COMENZI.get_last_error() FROM dual")
+                    error = cursor.fetchone()
+                    if error:
+                        print(f"Eroare: {error[0]}")
+                
+                conn.commit()
+                print("\n✅ Test completed!")
+                
+    except Exception as e:
+        print(f"❌ Eroare: {e}")
+        return False
+        
+    return True
+
+if __name__ == "__main__":
+    import time
+    os.time = lambda: int(time.time())
+    success = test_import_comanda()
+    sys.exit(0 if success else 1)