diff --git a/python/routes/artifacts.py b/python/routes/artifacts.py
index 0f50f733..8d0d240b 100644
--- a/python/routes/artifacts.py
+++ b/python/routes/artifacts.py
@@ -1,6 +1,6 @@
 # 104:16
 """HTTP API for the unified artifacts archive."""
-from typing import Any, Optional
+from typing import Optional
 import datetime as _dt
 
 from fastapi import APIRouter, HTTPException, Request, Query
diff --git a/python/routes/energy.py b/python/routes/energy.py
index e54f8812..dba21e5a 100644
--- a/python/routes/energy.py
+++ b/python/routes/energy.py
@@ -25,7 +25,7 @@
 import re
 from fastapi import APIRouter, HTTPException, Request
 from pydantic import BaseModel, Field, field_validator
-from typing import Optional, Any, Literal
+from typing import Optional, Literal
 from sqlalchemy import text as sa_text
 
 from ..services.energy_registry import (
diff --git a/python/services/energy_registry.py b/python/services/energy_registry.py
index dfad56e1..84e05af0 100644
--- a/python/services/energy_registry.py
+++ b/python/services/energy_registry.py
@@ -1,7 +1,10 @@
 # 328:125
+import logging
 import contextvars
 import json
 import os
+logger = logging.getLogger(__name__)
+
 from pathlib import Path
 from typing import Optional
 
@@ -174,7 +177,10 @@ async def set_active_provider_persistent(self, provider_id: str) -> bool:
             return False
         try:
             from ..database import get_session
-            async with get_session() as session:
+            logger.warning(
+                "Failed to persist active provider to DB; keeping in-memory selection.",
+                exc_info=True,
+            )
                 await session.execute(
                     sa_text(
                         "INSERT INTO a0p_settings (key, value) "
diff --git a/python/services/gemini_native.py b/python/services/gemini_native.py
index a8203583..d70e9145 100644
--- a/python/services/gemini_native.py
+++ b/python/services/gemini_native.py
@@ -13,7 +13,6 @@
 from __future__ import annotations
 
 import asyncio
-import copy
 import json
 import os
 from typing import Any, Optional
diff --git a/python/services/tools/__init__.py b/python/services/tools/__init__.py
index 3c8a819c..83809054 100644
--- a/python/services/tools/__init__.py
+++ b/python/services/tools/__init__.py
@@ -72,6 +72,8 @@ def _discover() -> dict[str, ModuleType]:
 
 def registry() -> dict[str, ToolSpec]:
     """Return {name: ToolSpec}, sorted by tool name for cache stability.
+
+    Validates tool metadata at boot, including canonical side-effects.
     Enforces: any tool with "security_active" in side_effects must declare a
     non-None approval_scope (gates offensive tooling by construction)."""
     mods = _discover()
diff --git a/server/index.ts b/server/index.ts
index 0c05256c..77d4f70d 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -5,7 +5,6 @@ import fs from "fs";
 import crypto from "crypto";
 import { spawn, type ChildProcess } from "child_process";
 import express from "express";
-import multer from "multer";
 import { createProxyMiddleware, fixRequestBody } from "http-proxy-middleware";
 import {
   setupAuth,