diff --git a/server/agent_core/intent.py b/server/agent_core/intent.py
index 7658bb5..e88358e 100644
--- a/server/agent_core/intent.py
+++ b/server/agent_core/intent.py
@@ -707,6 +707,10 @@ def parse_fast(text: str, world: World) -> IntentResult | None:
             params["window"] = win
         elif re.search(r"滚动", t):
             params["window"] = "short"
+        # Explicit Optimize wording selects the integrated Optimize V2 adapter;
+        # ordinary flexible scheduling keeps the CLOSED_LOOP default.
+        if re.search(r"\boptimize\b|优化引擎|优化算法", t, re.I):
+            params["engine"] = "OPTIMIZE"
         return hit("flex.schedule", params)
     # 瓶颈产能评估（瓶颈产能法）
     if re.search(r"瓶颈产能|产能池|产能评估|各?工序产能|瓶颈在哪|产能瓶颈|能做多少|日产能", t):
diff --git a/server/aps_domain/workflow.py b/server/aps_domain/workflow.py
index c5827c9..0adf23b 100644
--- a/server/aps_domain/workflow.py
+++ b/server/aps_domain/workflow.py
@@ -1785,9 +1785,12 @@ def _run_flex(store: WorldStore, intent: IntentResult, actor: str) -> AgentReply
         store.save()
     else:
         result = run_flex_schedule(store, sort_mode=mode, order_ids=order_ids or None,
-                                   actor=actor, window=window)  # P1
+                                   actor=actor, window=window,
+                                   engine_type=engine or None)  # P1
     mode_key = str(result.get("sortMode") or result.get("engineType") or mode or "CLOSED_LOOP")
     mode_cn = _FLEX_MODE_CN.get(mode_key, mode_key)
+    if engine == "OPTIMIZE":
+        mode_cn = f"Optimize · {mode_cn}"
     solve_status = str(result.get("solveStatus") or "FEASIBLE").upper()
     if result.get("sortMode") == "EXTERNAL" or use_ext:
         mode_cn = f"外部算法({result.get('skillId') or 'skill'})"
diff --git a/tests/golden/test_optimize_chat_trigger.py b/tests/golden/test_optimize_chat_trigger.py
new file mode 100644
index 0000000..1aa9833
--- /dev/null
+++ b/tests/golden/test_optimize_chat_trigger.py
@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from server.agent_core.intent import parse_fast
+from server.state.packs import load_pack
+
+
+PACK_PATH = Path(__file__).resolve().parents[2] / "server" / "data" / "packs" / "optimize-simulation-v1.json"
+
+
+def test_explicit_optimize_language_selects_optimize_flex_engine():
+    world = load_pack(str(PACK_PATH))
+
+    result = parse_fast("用 Optimize 算法生成一版柔性排产", world)
+
+    assert result is not None
+    assert result.intent == "flex.schedule"
+    assert result.params["engine"] == "OPTIMIZE"
+    assert result.params["sortMode"] == "BOTTLENECK"
+
+
+def test_plain_flexible_schedule_keeps_closed_loop_default():
+    world = load_pack(str(PACK_PATH))
+
+    result = parse_fast("生成一版柔性排产方案", world)
+
+    assert result is not None
+    assert result.intent == "flex.schedule"
+    assert "engine" not in result.params