chore(lint): remove all 34 dead-code warnings (verified site by site)

unused-vars (25): leftover imports/types across pages, routes and services;
write-only sickHours accumulator; unused holidayCount pair; test helpers
authPatch/authDelete; TOut dropped from ApiMutationOptions (the hook keeps
its own generic — no call-site changes); requireAuth no longer importable
in customers/warehouse routes (matches the no-bare-auth-reads convention).

useless-assignment (5): initializers proven overwritten on every path
(systemQty x2, hours, writtenSize -> let x: number) and the seed's dead
adminUser reassignment (create kept, assignment dropped).

useless-escape (4): [eE+\-] -> [eE+-] and [\/...] -> [/...] — identical
semantics.

Behavior-neutral; lint 102 -> 68 warnings (0 errors), suite 641 green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/admin/pages/AttendanceHistory.tsx

@@ -1,5 +1,5 @@
 import { useState, useMemo, useRef } from "react";
-import { useQuery, useQueryClient } from "@tanstack/react-query";
+import { useQuery } from "@tanstack/react-query";
 import Box from "@mui/material/Box";
 import Typography from "@mui/material/Typography";
 import { useAuth } from "../context/AuthContext";
@@ -9,7 +9,6 @@ import { iconBadgeSx } from "../theme";
 import {
   attendanceHistoryOptions,
   type AttendanceRecord,
-  type ProjectLogEntry,
 } from "../lib/queries/attendance";
 import {
   formatDate,
@@ -201,7 +200,6 @@ const renderProjectCell = (record: AttendanceRecord) => {
 
 export default function AttendanceHistory() {
   const { user, hasPermission } = useAuth();
-  const queryClient = useQueryClient();
   const { data: companySettings } = useQuery(companySettingsOptions());
   const companyName = companySettings?.company_name || "";
   const printRef = useRef<HTMLDivElement>(null);

src/admin/pages/AttendanceLocation.tsx

@@ -26,10 +26,7 @@ const LocationMap = styled("div")(({ theme }) => ({
 }));
 
 import { formatDate, formatTime } from "../utils/attendanceHelpers";
-import {
-  attendanceLocationOptions,
-  type LocationRecord,
-} from "../lib/queries/attendance";
+import { attendanceLocationOptions } from "../lib/queries/attendance";
 import { Button, Card, LoadingState, PageEnter, PageHeader } from "../ui";
 
 const BackIcon = (

src/admin/pages/CompanySettings.tsx

@@ -3,10 +3,7 @@ import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { useAlert } from "../context/AlertContext";
 import { useAuth } from "../context/AuthContext";
 import Forbidden from "../components/Forbidden";
-import {
-  companySettingsOptions,
-  type CompanySettingsData,
-} from "../lib/queries/settings";
+import { companySettingsOptions } from "../lib/queries/settings";
 import { bankAccountsOptions, type BankAccount } from "../lib/queries/common";
 import Box from "@mui/material/Box";
 import Typography from "@mui/material/Typography";
@@ -23,7 +20,6 @@ import {
   TextField,
   Select,
   CheckboxField,
-  StatusChip,
   FileUpload,
   LoadingState,
   type DataColumn,

src/admin/pages/OrderDetail.tsx

@@ -1,14 +1,7 @@
 import { useState, useEffect, useMemo, useRef } from "react";
 import DOMPurify from "dompurify";
 import { useQuery } from "@tanstack/react-query";
-import {
-  orderDetailOptions,
-  type OrderData,
-  type OrderItem,
-  type OrderSection,
-  type OrderInvoice,
-  type OrderProject,
-} from "../lib/queries/orders";
+import { orderDetailOptions, type OrderItem } from "../lib/queries/orders";
 import { useApiMutation } from "../lib/queries/mutations";
 import { useAlert } from "../context/AlertContext";
 import { useAuth } from "../context/AuthContext";

src/admin/pages/ProjectDetail.tsx

@@ -11,7 +11,6 @@ import MenuItem from "@mui/material/MenuItem";
 
 import {
   projectDetailOptions,
-  type ProjectData,
   type ProjectNote,
 } from "../lib/queries/projects";
 import { userListOptions, type User as ApiUser } from "../lib/queries/users";

src/admin/pages/Trips.tsx

@@ -199,7 +199,7 @@ export default function Trips() {
     TripForm,
     { message?: string; error?: string }
   >({
-    url: (formData) =>
+    url: () =>
       editingTrip ? `${API_BASE}/trips/${editingTrip.id}` : `${API_BASE}/trips`,
     method: () => (editingTrip ? "PUT" : "POST"),
     invalidate: ["trips", "vehicles"],

src/admin/pages/WarehouseInventoryForm.tsx

@@ -23,7 +23,7 @@ interface InventoryItem {
 }
 
 function parseDecimal(raw: string): number {
-  const cleaned = raw.replace(/[eE+\-]/g, "");
+  const cleaned = raw.replace(/[eE+-]/g, "");
   const n = Number(cleaned);
   return Number.isFinite(n) ? n : 0;
 }

src/admin/pages/WarehouseIssueForm.tsx

@@ -65,7 +65,7 @@ interface BatchesResponse {
 }
 
 function parseDecimal(raw: string): number {
-  const cleaned = raw.replace(/[eE+\-]/g, "");
+  const cleaned = raw.replace(/[eE+-]/g, "");
   const n = Number(cleaned);
   return Number.isFinite(n) ? n : 0;
 }

src/admin/pages/WarehouseReceiptForm.tsx

@@ -50,7 +50,7 @@ interface MovementItem {
 }
 
 function parseDecimal(raw: string): number {
-  const cleaned = raw.replace(/[eE+\-]/g, "");
+  const cleaned = raw.replace(/[eE+-]/g, "");
   const n = Number(cleaned);
   return Number.isFinite(n) ? n : 0;
 }