feat: challenge registry-driven platform + XVI/XVII imports + admin toggle + domain rename

- Rename repo/domain: attack-defense-platform / attackdefense.imrnes.team (all refs replaced)
- challenge_registry.json: single source of truth (28 challs across gemastik18/xvi/xvii)
- teams.py: registry-driven CHALLENGES, set_challenge_enabled, sync_challenge_runtime
  (apply enable/disable to live teams: build/up or stop/remove + receiver restart)
- compose_gen.py: render per-team compose from canonical per-challenge templates
  (image reuse, per-team ports 30xxx, flag mounts, passwords)
- gen_canonical_composes.py: canonical docker-compose.yml for all services
- import_new_challenges.py: import XVI/XVII services + EOL base image fixes
  (debian:buster→bookworm, node:14→20, python:3.7-slim→3.11)
- receiver: xvi package (10 checkers) + xvii package (12 generic checkers),
  Challenge base reads PASSWORD_<team_port> from env; gen_receiver_main.py
  generates per-team main.py from registry
- main.py: /api/challenges returns full registry; PATCH /api/challenges/<name>
  toggles enabled + applies to live teams
- index.html: 🏗️ Challenge Manager tab (toggle per challenge, grouped by set)
- SLA bonus now dynamic (all enabled challenges, not hardcoded 6)

services/ticketer/src/main.py

@@ -0,0 +1,105 @@
+import random
+import time
+import pok
+
+FLAG = open("../flag.txt", "r").read()
+
+TICKET_PRICE = {
+    "normal": 2,
+    "premium": 5,
+    "VIP": 10,
+    "FLAG": 100,
+}
+
+TICKET_VALUE = {
+    "normal": 1,
+    "premium": 3,
+    "VIP": 5,
+}
+
+
+class Ticketer:
+    def __init__(self, username: str):
+        pk, vk = pok.keygen(username.encode())
+        self.username = username
+        self.proving_key = pk
+        self.verifying_key = vk
+        self.balance = 10
+        self.used_tickets = []
+        self.issued_tickets = {}
+
+    def buy_ticket(self, ticket_type):
+        price = TICKET_PRICE.get(ticket_type)
+        if self.balance >= price:
+            self.balance -= price
+            new_ticket_id = int.to_bytes(random.getrandbits(128), 16, "big").hex()
+            self.issued_tickets[new_ticket_id] = ticket_type
+            ticket = pok.prove(new_ticket_id.encode(), self.proving_key)
+
+            if ticket_type == "FLAG":
+                print(FLAG)
+            else:
+                print(f"Your ticket: {new_ticket_id+ticket.hex()}")
+        else:
+            print("[ERROR] Insufficient balance")
+
+    def refund_ticket(self):
+        try:
+            ticket = input("Input ticket: ")
+            ticket_id, proof = ticket[:32], bytes.fromhex(ticket[32:])
+
+            if pok.verify(ticket_id.encode(), self.verifying_key, proof):
+                if ticket_id in self.issued_tickets and ticket not in self.used_tickets:
+                    ticket_type = self.issued_tickets.get(ticket_id)
+                    value = TICKET_VALUE.get(ticket_type, 0)
+                    self.balance += value
+                    self.used_tickets.append(ticket)
+                    print("Ticket succesfully refunded!")
+                else:
+                    print("[ERROR] Invalid ticket")
+            else:
+                print("[ERROR] Invalid ticket")
+        except Exception:
+            print("[ERROR] Invalid ticket")
+
+    def checker_menu(self):
+        self.balance = 150
+
+    def menu(self):
+        print("[1] Buy normal ticket      ($2)")
+        print("[2] Buy premium ticket     ($5)")
+        print("[3] Buy VIP ticket         ($10)")
+        print("[4] Buy FLAG ticket        ($100)")
+        print("[5] Refund ticket")
+        print("[6] Exit")
+        print("")
+        print(f"Your balance: ${self.balance}")
+
+
+def main():
+
+    username = input("Username: ")
+    ticketer = Ticketer(username)
+
+    while True:
+        time.sleep(0.5)
+        ticketer.menu()
+        option = input("$> ")
+        if option == "1":
+            ticketer.buy_ticket("normal")
+        elif option == "2":
+            ticketer.buy_ticket("premium")
+        elif option == "3":
+            ticketer.buy_ticket("VIP")
+        elif option == "4":
+            ticketer.buy_ticket("FLAG")
+        elif option == "5":
+            ticketer.refund_ticket()
+        elif option == FLAG:
+            ticketer.checker_menu()
+        else:
+            break
+
+
+if __name__ == "__main__":
+    main()

services/ticketer/src/pok.py

@@ -0,0 +1,28 @@
+import hashlib
+from fastecdsa import curve, ecdsa
+
+def H(m):
+    return decode(hashlib.shake_256(m).digest(128))
+
+def encode(x):
+    return int.to_bytes(x, 32, 'big')
+
+def decode(b):
+    return int.from_bytes(b, 'big') % curve.secp256k1.q
+
+def keygen(seed):
+    pk = H(seed)
+    vk = pk * curve.secp256k1.G
+
+    return pk, vk
+
+def prove(m, pk):
+    u, z = ecdsa.sign(m, pk, curve.secp256k1)
+    return encode(u)+encode(z)
+
+def verify(m, vk, proof):
+    if len(proof) != 64:
+        return False
+
+    u, z = decode(proof[:32]), decode(proof[32:])
+    return ecdsa.verify((u, z), m, vk, curve.secp256k1)