chore: auto-fix Biome formatting and configure lint rules

Run biome check --write --unsafe to fix tabs, import ordering, and
non-null assertions across entire codebase. Disable a11y rules not
applicable to this single-user app. Exclude auto-generated routeTree.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/client/hooks/useTotals.ts

@@ -2,30 +2,30 @@ import { useQuery } from "@tanstack/react-query";
 import { apiGet } from "../lib/api";
 
 interface CategoryTotals {
-  categoryId: number;
-  categoryName: string;
-  categoryIcon: string;
-  totalWeight: number;
-  totalCost: number;
-  itemCount: number;
+	categoryId: number;
+	categoryName: string;
+	categoryIcon: string;
+	totalWeight: number;
+	totalCost: number;
+	itemCount: number;
 }
 
 interface GlobalTotals {
-  totalWeight: number;
-  totalCost: number;
-  itemCount: number;
+	totalWeight: number;
+	totalCost: number;
+	itemCount: number;
 }
 
 interface TotalsResponse {
-  categories: CategoryTotals[];
-  global: GlobalTotals;
+	categories: CategoryTotals[];
+	global: GlobalTotals;
 }
 
 export type { CategoryTotals, GlobalTotals, TotalsResponse };
 
 export function useTotals() {
-  return useQuery({
-    queryKey: ["totals"],
-    queryFn: () => apiGet<TotalsResponse>("/api/totals"),
-  });
+	return useQuery({
+		queryKey: ["totals"],
+		queryFn: () => apiGet<TotalsResponse>("/api/totals"),
+	});
 }