diff --git a/routes/lab.py b/routes/lab.py
new file mode 100644
index 0000000..73180fa
--- /dev/null
+++ b/routes/lab.py
@@ -0,0 +1,139 @@
+"""
+routes/lab.py
+=============
+Simulator endpoints:
+  POST /api/lab/start
+  POST /api/lab/start-deepseek
+  GET  /api/lab/status
+  GET  /api/lab/result
+  GET  /api/lab/decks
+  GET  /api/lab/history
+  GET  /api/lab/profiles
+  GET  /api/lab/profiles/{name}
+  GET  /api/lab/analytics/{deck_name}
+  GET  /api/lab/trends/{deck_name}
+  GET  /api/lab/log
+  GET  /api/lab/debug-log
+
+All heavy logic (run_batch_subprocess, _run_deepseek_batch_thread,
+build_java_command, parse_dck_file, AI_PROFILES dict) lives in
+lab_api.py until the full extraction is complete; this router
+delegate-calls those functions via routes.shared.get().
+"""
+
+from __future__ import annotations
+
+import json
+import os
+from pathlib import Path
+from typing import Optional
+
+from fastapi import APIRouter, BackgroundTasks, HTTPException, Request as FARequest
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel
+
+from routes.shared import get as _get
+
+router = APIRouter(prefix="/api/lab", tags=["simulator"])
+
+
+# ---------------------------------------------------------------------------
+# Local lightweight models (don't need shared state to define)
+# ---------------------------------------------------------------------------
+
+class StartResponse(BaseModel):
+    batchId: str
+    status: str = "started"
+    message: str = ""
+
+
+class StatusResponse(BaseModel):
+    batchId: str = ""
+    running: bool = False
+    completed: int = 0
+    total: int = 0
+    threads: int = 0
+    elapsedMs: int = 0
+    error: Optional[str] = None
+    simsPerSec: float = 0.0
+    run_id: str = ""
+    games_completed: int = 0
+    total_games: int = 0
+    current_decks: list = []
+
+
+# ---------------------------------------------------------------------------
+# Simulator endpoints
+# ---------------------------------------------------------------------------
+
+@router.post("/start", response_model=StartResponse)
+async def start_batch(req: FARequest, background_tasks: BackgroundTasks):
+    """Delegate to lab_api.start_batch (registered via shared registry)."""
+    fn = _get("start_batch")
+    return await fn(req, background_tasks)
+
+
+@router.post("/start-deepseek")
+async def start_batch_deepseek(request: FARequest, background_tasks: BackgroundTasks):
+    fn = _get("start_batch_deepseek")
+    return await fn(request, background_tasks)
+
+
+@router.get("/status", response_model=StatusResponse)
+async def get_status(batchId: Optional[str] = None):
+    fn = _get("get_status")
+    return await fn(batchId=batchId)
+
+
+@router.get("/result")
+async def get_result(batchId: Optional[str] = None):
+    fn = _get("get_result")
+    return await fn(batchId=batchId)
+
+
+@router.get("/decks")
+async def list_decks():
+    fn = _get("list_decks")
+    return await fn()
+
+
+@router.get("/history")
+async def list_history():
+    fn = _get("list_history")
+    return await fn()
+
+
+@router.get("/profiles")
+async def list_profiles():
+    fn = _get("list_profiles")
+    return await fn()
+
+
+@router.get("/profiles/{name}")
+async def get_profile(name: str):
+    fn = _get("get_profile")
+    return await fn(name)
+
+
+@router.get("/analytics/{deck_name}")
+async def analyze_deck(deck_name: str):
+    fn = _get("analyze_deck")
+    return await fn(deck_name)
+
+
+@router.get("/trends/{deck_name}")
+async def get_deck_trends(deck_name: str):
+    fn = _get("get_deck_trends")
+    return await fn(deck_name)
+
+
+@router.get("/log")
+async def get_log(batchId: str):
+    fn = _get("get_log")
+    return await fn(batchId=batchId)
+
+
+@router.get("/debug-log")
+async def get_debug_log():
+    fn = _get("get_debug_log")
+    return await fn()