Add microservices, web UI, and replay tooling

tests/unit/test_auth.py

@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+from services.common.auth import create_token, decode_token, hash_password, verify_password
+
+
+def test_password_hash_roundtrip() -> None:
+    secret = "dragon"
+    hashed = hash_password(secret)
+    assert verify_password(secret, hashed)
+    assert not verify_password("wrong", hashed)
+
+
+def test_token_roundtrip() -> None:
+    token = create_token(42, "alice")
+    payload = decode_token(token)
+    assert payload["sub"] == "42"
+    assert payload["username"] == "alice"