feat: reads/players API + REST route conformance test

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G796GsLCvJQKVN7hwV2cDx

tests/test_poker_contract.py

@@ -14,3 +14,20 @@ def test_llm_tool_required_args_match_contract():
         assert required == set(decl["required"]), (
             f"{op}: tools spec required {required} != contract {set(decl['required'])}"
         )
+
+
+def test_rest_routes_registered():
+    import lyra.web.server as server
+    registered = set()
+    for route in server.app.routes:
+        methods = getattr(route, "methods", None)
+        path = getattr(route, "path", None)
+        if not methods or not path:
+            continue
+        for m in methods:
+            registered.add((m, path))
+    for op, decl in OPERATIONS.items():
+        if not decl["rest"]:
+            continue
+        method, path = decl["rest"]
+        assert (method, path) in registered, f"{op}: {method} {path} not registered"