refactor: add rule engine, risk service, quote state machine, and replay tests

tests/test_rule_engine.py

@@ -0,0 +1,57 @@
+import unittest
+
+from core.quote_state_machine import QuoteStateMachine
+from core.rules import Rule, RuleContext, RuleEngine, RuleResult
+from services.risk_service import RiskService
+
+
+class _StubState:
+    def __init__(self):
+        self.pending_image_urls = []
+        self.pending_requirements = []
+        self.quote_phase = "idle"
+        self.quote_ready_turns = 0
+
+
+class RuleEngineTests(unittest.IsolatedAsyncioTestCase):
+    async def test_rule_engine_priority_and_stop(self):
+        async def pred_true(_ctx):
+            return True
+
+        async def act_first(_ctx):
+            return RuleResult(matched=True, stop=True, action="first", payload={"x": 1})
+
+        async def act_second(_ctx):
+            return RuleResult(matched=True, stop=True, action="second", payload={"x": 2})
+
+        engine = RuleEngine(
+            [
+                Rule(name="r2", priority=20, predicate=pred_true, action=act_second),
+                Rule(name="r1", priority=10, predicate=pred_true, action=act_first),
+            ]
+        )
+        out = await engine.run(RuleContext())
+        self.assertTrue(out.matched)
+        self.assertEqual(out.action, "first")
+        self.assertEqual(out.payload["x"], 1)
+
+    def test_quote_state_machine_transitions(self):
+        sm = QuoteStateMachine(delay_turns=1)
+        st = _StubState()
+        st.pending_image_urls = ["u1"]
+        sm.refresh(st)
+        self.assertEqual(st.quote_phase, "collecting")
+        self.assertTrue(sm.should_defer_batch_quote(st, mark_ready=True))
+        self.assertEqual(st.quote_phase, "ready_to_quote")
+        self.assertEqual(st.quote_ready_turns, 0)
+        self.assertFalse(sm.should_defer_batch_quote(st, mark_ready=False))
+
+    def test_risk_service_reject_text(self):
+        svc = RiskService()
+        self.assertIn("地图", svc.build_reject_text("map"))
+        self.assertIn("政治", svc.build_reject_text("political"))
+        self.assertIn("涉黄", svc.build_reject_text("sexual"))
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=2)