fix(core): Resolve startup and team management page errors

This commit includes two critical fixes:
- Corrects the ALLOWED_HOSTS logic to reliably detect the server's IP at startup, resolving the DisallowedHost error.
- Fixes a NameError on the Team Management page by adding the missing 'timedelta' import.

Author: cp099

inventory/models.py

@@ -9,6 +9,7 @@
 from django.utils import timezone
 from django.db.models import Sum
 from django.db.models.signals import post_save
+from datetime import timedelta
 
 import barcode
 from barcode.writer import SVGWriter

run.py

@@ -14,32 +14,49 @@
 
 import os
 import sys
+import socket
 from waitress import serve
-from sherlock.wsgi import application
-from django.core.management import execute_from_command_line
 
-HOST = '0.0.0.0'
-PORT = 8000
-DB_FILE = 'db.sqlite3'
+
+def discover_and_set_host_ip():
+    """Discovers the primary network IP and sets it as an environment variable."""
+    detected_ip = '127.0.0.1'
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.settimeout(0)
+    try:
+        s.connect(('10.254.254.254', 1))
+        detected_ip = s.getsockname()[0]
+        print(f"--- Automatically detected server IP: {detected_ip} ---")
+    except Exception:
+        print("--- Warning: Could not auto-detect network IP. Defaulting to localhost. ---")
+    finally:
+        s.close()
+    os.environ['SHERLOCK_ALLOWED_IP'] = detected_ip
+    return detected_ip
 
 def run_migrations():
     """Checks if the database exists and runs migrations if it doesn't."""
+    from django.core.management import execute_from_command_line
     if not os.path.exists(DB_FILE):
         print("--- Database not found. Running initial setup... ---")
-        os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'sherlock.settings')
-        
         args = [sys.argv[0], 'migrate']
-        
         execute_from_command_line(args)
         print("--- Database created successfully. ---")
     else:
         print("--- Database found. ---")
 
 if __name__ == "__main__":
+    server_ip = discover_and_set_host_ip()
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'sherlock.settings')
+
+    DB_FILE = 'db.sqlite3'
     run_migrations()
-    
+
+    from sherlock.wsgi import application
+
+    HOST = '0.0.0.0'
+    PORT = 8000
     print("--- Starting Sherlock Production Server ---")
-    print(f"Your application will be available at: http://<your_server_ip>:{PORT}")
+    print(f"Your application should be available at: http://{server_ip}:{PORT}")
     print("Press Ctrl+C to stop the server.")
-    
     serve(application, host=HOST, port=PORT)

sherlock/settings.py

@@ -56,13 +56,16 @@
 
 ALLOWED_HOSTS = ['127.0.0.1', 'localhost']
 if not DEBUG:
+    detected_ip = os.environ.get('SHERLOCK_ALLOWED_IP')
+    if detected_ip:
+        ALLOWED_HOSTS.append(detected_ip)
+    
     try:
         hostname = socket.gethostname()
-        ALLOWED_HOSTS.append(hostname)
-        ip_address = socket.gethostbyname(hostname)
-        ALLOWED_HOSTS.append(ip_address)
-    except socket.gaierror:
-        print("Warning: Could not determine hostname or IP for ALLOWED_HOSTS. Network access may be limited.")
+        if hostname:
+            ALLOWED_HOSTS.append(hostname)
+    except Exception:
+        pass
 
 
 # Application definition