feat(environment): implement reset() — zeros state and generates new episode_id

server/environment.py

@@ -31,3 +31,23 @@ class RedTeamEnvironment:
     def set_llm_pipeline(self, pipeline_fn: Callable) -> None:
         self.llm_pipeline = pipeline_fn
         logger.info("LLM pipeline wired up (Person 3)")
+
+    async def reset(self) -> RedTeamObservation:
+        self.turn           = 0
+        self.attack_history = []
+        self.episode_id     = f"ep_{uuid.uuid4().hex[:12]}"
+        self.is_active      = True
+        self.created_at     = datetime.utcnow()
+
+        logger.info(f"Episode started: {self.episode_id}")
+
+        return RedTeamObservation(
+            defender_response       = "Defender initialised. Ready for red-team evaluation.",
+            defense_score           = 1.0,
+            attack_success_estimate = 0.0,
+            novelty_score           = 1.0,
+            turn                    = 0,
+            episode_done            = False,
+            feedback                = "Episode started. Begin your attack strategies.",
+            episode_id              = self.episode_id,
+        )