Implement durable OAuth MCP bridge with local Codex worker and deployment guides

tests/conftest.py

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+import pytest
+from codex_chatgpt_mcp_proxy.config import ServerConfig
+from codex_chatgpt_mcp_proxy.store import Store
+
+
+@pytest.fixture
+def config(tmp_path):
+    return ServerConfig(
+        database=str(tmp_path / "server.sqlite"),
+        mode="development",
+        worker_token="w" * 40,
+        dev_mcp_token="m" * 40,
+    )
+
+
+@pytest.fixture
+def store(config):
+    return Store(config)
+
+
+def claim(store):
+    store.register("home", "1", "test", ["demo"])
+    return store.claim("home")