cleanup: remove unused imports, merge duplicates, drop stale comment

- Remove unused _ml_logging_enabled import from routes/deepseek.py
- Remove dead _ml_logging_enabled top-level import and
  _ml_logging_enabled_local alias from routes/ml.py (endpoints already
  use the module-path form via import services.logging)
- Merge duplicate from services.precon_service imports in routes/precon.py
- Merge duplicate from models.requests imports in routes/deckgen.py
- Remove redundant inline comment in routes/precon.py

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

routes/deckgen.py

@@ -33,13 +33,11 @@ import httpx
 
 from fastapi import APIRouter, HTTPException
 from fastapi.responses import JSONResponse, StreamingResponse
-from models.requests import DeckResearchRequest, DeckGenerateAIRequest
-
 import routes.coach as _coach  # for _deck_gen_v3 / _deck_gen_v3_error module-level access
 from models.state import CFG
 from models.requests import (
     DeckGenerationRequest, DeckGenV3Request, DeckGenV3SubstituteRequest,
-    DeckGenerationSourceConfig,
+    DeckGenerationSourceConfig, DeckResearchRequest, DeckGenerateAIRequest,
 )
 from models.responses import GeneratedDeckCard
 from services.database import _get_db_conn

routes/deepseek.py

@@ -31,7 +31,7 @@ from fastapi.responses import JSONResponse
 from models.state import CFG
 from services.database import _get_db_conn
 from services.forge_runner import _get_deepseek_brain
-from services.logging import log_sim, _ml_logging_enabled
+from services.logging import log_sim
 from commander_ai_lab.sim.validator_brain import ValidatorBrain, ValidatorConfig
 logger = logging.getLogger(__name__)
 

routes/ml.py

@@ -33,8 +33,6 @@ from pathlib import Path
 from fastapi import APIRouter, HTTPException, Request as FastAPIRequest
 
 from models.state import CFG
-from services.logging import _ml_logging_enabled
-
 log_ml = logging.getLogger("commander_ai_lab.ml")
 
 router = APIRouter(tags=["ml"])
@@ -94,9 +92,6 @@ _ppo_lock   = threading.Lock()
 _tournament_state = _TournamentState()
 _tournament_lock  = threading.Lock()
 
-# module-level toggle (local copy; the shared one is for batch runs)
-_ml_logging_enabled_local = _ml_logging_enabled
-
 
 def _get_policy_service():
     """Get or initialize the policy inference service (lazy loading)."""

routes/precon.py

@@ -16,9 +16,8 @@ from pathlib import Path
 from fastapi import APIRouter, HTTPException
 
 from models.state import CFG
-from services.precon_service import download_precon_database, PRECON_INDEX
+from services.precon_service import download_precon_database, PRECON_INDEX, _get_precon_dir
 from services.logging import log
-from services.precon_service import _get_precon_dir
 
 router = APIRouter(tags=["precon"])
 
@@ -26,7 +25,7 @@ router = APIRouter(tags=["precon"])
 @router.get("/api/lab/precons")
 async def list_precons():
     """List all available precon decks."""
-    return {"precons": PRECON_INDEX}        # reads current value every call
+    return {"precons": PRECON_INDEX}
 
 
 @router.post("/api/lab/precons/install")