feat: implement researcher and publication management with sync functionality

backend/app/utils/orcid_validator.py

@@ -0,0 +1,28 @@
+import re
+
+ORCID_REGEX = re.compile(r"^\d{4}-\d{4}-\d{4}-\d{3}[0-9X]$")
+
+
+def is_valid_orcid(orcid_id: str) -> bool:
+    """
+    Valida un ORCID ID:
+    - Formato: 0000-0000-0000-0000
+    - Dígito de control según ISO 7064 Mod 11-2
+    """
+    if not ORCID_REGEX.match(orcid_id):
+        return False
+
+    # Quitar guiones
+    digits = orcid_id.replace("-", "")
+
+    total = 0
+    # Los primeros 15 dígitos
+    for char in digits[:-1]:
+        total = (total + int(char)) * 2
+
+    # Resto
+    remainder = total % 11
+    result = (12 - remainder) % 11
+    check_digit = "X" if result == 10 else str(result)
+
+    return digits[-1] == check_digit