refactor: extract signals filter builder, add ESLint 10 config, fix low-hanging issues

web/lib/context.tsx

@@ -1,11 +1,13 @@
 'use client';
 
 import React, { createContext, useCallback, useContext, useEffect, useState } from 'react';
-import type { TimeRange, TimeMode, TriggeredAlert } from './types';
-import { TIME_RANGE_MS } from './types';
+
 import { checkAlerts } from './api';
 import { buildReverseMap } from './localization';
+import { TIME_RANGE_MS } from './types';
+
 import type { LocaleMap, ReverseMap } from './localization';
+import type { TimeRange, TimeMode, TriggeredAlert } from './types';
 
 interface AppContextValue {
   timeRange: TimeRange;
@@ -22,14 +24,12 @@ interface AppContextValue {
 const AppContext = createContext<AppContextValue | null>(null);
 
 export function AppProvider({
-  token: _token,
   localeMap,
   children,
 }: {
-  token: string;
   localeMap: LocaleMap;
   children: React.ReactNode;
-}) {
+} & { token?: string }) {
   const [timeRange, setTimeRange] = useState<TimeRange>('6h');
   const [timeMode, setTimeMode] = useState<TimeMode>('real');
   const [triggeredAlerts, setTriggeredAlerts] = useState<TriggeredAlert[]>([]);