diff --git a/frontend/eslint.config.js b/frontend/eslint.config.js
index 65cc549..4664acd 100644
--- a/frontend/eslint.config.js
+++ b/frontend/eslint.config.js
@@ -49,7 +49,6 @@ export default defineConfig(
 				svelteConfig
 			}
 		},
-		rules: {
-		}
+		rules: {}
 	}
 );
diff --git a/frontend/src/lib/components/account/EditRequestModal.svelte b/frontend/src/lib/components/account/EditRequestModal.svelte
index ecc21ea..20492f0 100644
--- a/frontend/src/lib/components/account/EditRequestModal.svelte
+++ b/frontend/src/lib/components/account/EditRequestModal.svelte
@@ -9,12 +9,7 @@
 	import * as Label from '$lib/components/ui/label';
 	import DatePicker from '$lib/components/booking/DatePicker.svelte';
 	import PolicyPopover from '$lib/components/ui/policyPopover.svelte';
-	import type {
-		Booking,
-		Service,
-		WorkingHoursDay,
-		AvailableHoursDay
-	} from '$lib/types/booking';
+	import type { Booking, Service, WorkingHoursDay, AvailableHoursDay } from '$lib/types/booking';
 	import {
 		extractBookedSlots,
 		getLunchProtectionForSlots,
@@ -787,8 +782,8 @@
 							<p class="font-medium text-amber-900">Cannot Reschedule Online</p>
 							<p class="mt-1">{noticeBlockedMessage}</p>
 							<p class="mt-1">
-								<a href="/contact" target="_blank" rel="external" class="underline">Contact us</a> to discuss
-								options, or
+								<a href="/contact" target="_blank" rel="external" class="underline">Contact us</a>
+								to discuss options, or
 								<button
 									type="button"
 									onclick={() => (open = false)}
diff --git a/frontend/src/lib/components/admin/BookingCreateModal.svelte b/frontend/src/lib/components/admin/BookingCreateModal.svelte
index 0d87a92..7aad3cd 100644
--- a/frontend/src/lib/components/admin/BookingCreateModal.svelte
+++ b/frontend/src/lib/components/admin/BookingCreateModal.svelte
@@ -145,6 +145,7 @@
 			!customServiceErrors.duration_minutes &&
 			!customServiceErrors.minimum_age_required
 	);
+	 
 
 	function toggleCustomForm(show: boolean) {
 		showCustomCreateForm = show;
@@ -324,6 +325,7 @@
 		userType === 'member'
 			? !!selectedUserId
 			: !!(guestName.trim() && guestPhone.trim() && isValidUKPhone(guestPhone))
+	 
 	);
 	const canProceedStep2 = $derived(selectedServices.length > 0);
 	const canProceedStep3 = $derived(true); // Overrides are optional
@@ -487,7 +489,7 @@
 					(user: { account_role: string }) => !excludedRoles.includes(user.account_role)
 				);
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('Failed to load users');
 		} finally {
 			loadingUsers = false;
@@ -508,7 +510,7 @@
 			if (response.ok) {
 				services = await response.json();
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('Failed to load services');
 		} finally {
 			loadingServices = false;
@@ -582,7 +584,7 @@
 				workingHours = { ...workingHours, ...whMap };
 				availableHours = { ...availableHours, ...ahMap };
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('Failed to load availability');
 		} finally {
 			_loadingWorkingHours = false;
@@ -652,7 +654,7 @@
 				workingHours = { ...workingHours, ...whMap };
 				availableHours = { ...availableHours, ...ahMap };
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('Failed to load availability');
 		} finally {
 			_loadingWorkingHours = false;
@@ -742,7 +744,7 @@
 				toast.error(`Failed to reserve slot: ${errorText}`);
 				return false;
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('Failed to reserve slot');
 			return false;
 		} finally {
@@ -1042,7 +1044,7 @@
 				const errorText = await res.text();
 				toast.error(`Failed to create booking: ${errorText}`);
 			}
-		} catch (err) {
+		} catch (_err) {
 			toast.error('An error occurred while creating booking');
 		} finally {
 			submitting = false;
diff --git a/frontend/src/lib/components/admin/BookingModal.svelte b/frontend/src/lib/components/admin/BookingModal.svelte
index 8e0ebfe..7c29ada 100644
--- a/frontend/src/lib/components/admin/BookingModal.svelte
+++ b/frontend/src/lib/components/admin/BookingModal.svelte
@@ -214,7 +214,7 @@
 				toast.error('Failed to load booking details: ' + text);
 			}
 		} catch (_err) {
-			console.error(..._err);
+			console.error('Network error loading booking details:', _err);
 			toast.error('Network error loading booking details');
 		}
 	}
diff --git a/frontend/src/lib/components/admin/CustomServicesManagement.svelte b/frontend/src/lib/components/admin/CustomServicesManagement.svelte
index db7f2d2..39f4587 100644
--- a/frontend/src/lib/components/admin/CustomServicesManagement.svelte
+++ b/frontend/src/lib/components/admin/CustomServicesManagement.svelte
@@ -8,7 +8,7 @@
 	import * as Modal from '$lib/components/ui/dialog';
 	import { Skeleton } from '$lib/components/ui/skeleton';
 	import { Separator } from '$lib/components/ui/separator';
-import { SvelteURLSearchParams } from 'svelte/reactivity';
+	import { SvelteURLSearchParams } from 'svelte/reactivity';
 
 	type CustomService = {
 		id: string;
diff --git a/frontend/src/lib/components/admin/DiscountsManagement.svelte b/frontend/src/lib/components/admin/DiscountsManagement.svelte
index 12fc160..90a89ec 100644
--- a/frontend/src/lib/components/admin/DiscountsManagement.svelte
+++ b/frontend/src/lib/components/admin/DiscountsManagement.svelte
@@ -48,7 +48,6 @@
 		anniversary: 'Anniversary'
 	};
 
-
 	let campaigns = $state<Campaign[]>([]);
 	let loading = $state(true);
 	let actionInProgress = $state<string | null>(null);
@@ -133,7 +132,6 @@
 		showModal = true;
 	}
 
-
 	async function submitForm() {
 		errors = {};
 		if (!form.name.trim()) errors.name = 'Required';
diff --git a/frontend/src/lib/components/admin/EditRequestModal.svelte b/frontend/src/lib/components/admin/EditRequestModal.svelte
index aac9d92..8eeebca 100644
--- a/frontend/src/lib/components/admin/EditRequestModal.svelte
+++ b/frontend/src/lib/components/admin/EditRequestModal.svelte
@@ -1,5 +1,4 @@
 <script lang="ts">
-	
 	import { authStore } from '$lib/stores/auth.svelte';
 	import { toast } from 'svelte-sonner';
 	import * as Modal from '$lib/components/ui/dialog';
diff --git a/frontend/src/lib/components/admin/GiftCardsManagement.svelte b/frontend/src/lib/components/admin/GiftCardsManagement.svelte
index 5112185..5e1ce88 100644
--- a/frontend/src/lib/components/admin/GiftCardsManagement.svelte
+++ b/frontend/src/lib/components/admin/GiftCardsManagement.svelte
@@ -8,7 +8,7 @@
 	import * as Modal from '$lib/components/ui/dialog';
 	import { Skeleton } from '$lib/components/ui/skeleton';
 	import { formatUserName } from '$lib/utils/nameDisplay';
-import { SvelteDate, SvelteURLSearchParams } from 'svelte/reactivity';
+	import { SvelteDate, SvelteURLSearchParams } from 'svelte/reactivity';
 
 	interface GiftCard {
 		id: string;
@@ -855,7 +855,9 @@ import { SvelteDate, SvelteURLSearchParams } from 'svelte/reactivity';
 				case 'remaining':
 					return (a.amount_remaining - b.amount_remaining) * mul;
 				case 'created':
-					return (new SvelteDate(a.created_at).getTime() - new SvelteDate(b.created_at).getTime()) * mul;
+					return (
+						(new SvelteDate(a.created_at).getTime() - new SvelteDate(b.created_at).getTime()) * mul
+					);
 				case 'status': {
 					const aVal = a.redeemed_by ? 2 : a.amount_remaining === 0 ? 1 : 0;
 					const bVal = b.redeemed_by ? 2 : b.amount_remaining === 0 ? 1 : 0;
@@ -884,7 +886,9 @@ import { SvelteDate, SvelteURLSearchParams } from 'svelte/reactivity';
 				case 'balance':
 					return (a.balance - b.balance) * mul;
 				case 'updated':
-					return (new SvelteDate(a.updated_at).getTime() - new SvelteDate(b.updated_at).getTime()) * mul;
+					return (
+						(new SvelteDate(a.updated_at).getTime() - new SvelteDate(b.updated_at).getTime()) * mul
+					);
 				default:
 					return 0;
 			}
diff --git a/frontend/src/lib/components/admin/HolidayHours.svelte b/frontend/src/lib/components/admin/HolidayHours.svelte
index 51b5397..50f2491 100644
--- a/frontend/src/lib/components/admin/HolidayHours.svelte
+++ b/frontend/src/lib/components/admin/HolidayHours.svelte
@@ -157,13 +157,21 @@
 					description: group.description,
 					weekStarts: group.weekStarts || [],
 					hours:
-						group.hours?.map((h: { id: number; weekday: number; startTime: string; endTime: string; isOpen: boolean }) => ({
-							id: h.id,
-							weekday: h.weekday,
-							start_time: formatTime(h.startTime),
-							end_time: formatTime(h.endTime),
-							is_open: h.isOpen
-						})) || []
+						(group.hours as any[])?.map(
+							(h: {
+								id: number;
+								weekday: number;
+								startTime: string;
+								endTime: string;
+								isOpen: boolean;
+							}) => ({
+								id: h.id,
+								weekday: h.weekday,
+								start_time: formatTime(h.startTime),
+								end_time: formatTime(h.endTime),
+								is_open: h.isOpen
+							})
+						) || []
 				}));
 			} else {
 				console.error('Failed to fetch exception groups:', response.status);
diff --git a/frontend/src/lib/components/admin/PatchTestsManagement.svelte b/frontend/src/lib/components/admin/PatchTestsManagement.svelte
index ab1256a..0443ce5 100644
--- a/frontend/src/lib/components/admin/PatchTestsManagement.svelte
+++ b/frontend/src/lib/components/admin/PatchTestsManagement.svelte
@@ -7,7 +7,7 @@
 	import { Checkbox } from '$lib/components/ui/checkbox';
 	import { Skeleton } from '$lib/components/ui/skeleton';
 	import * as Modal from '$lib/components/ui/dialog';
-import { SvelteMap } from 'svelte/reactivity';
+	import { SvelteMap } from 'svelte/reactivity';
 
 	type Service = {
 		id: string;
@@ -111,7 +111,7 @@ import { SvelteMap } from 'svelte/reactivity';
 			if (ptRes.ok && svcRes.ok) {
 				patchTests = await ptRes.json();
 				const svcData = await svcRes.json();
-				const uniqueSvc = new SvelteMap();
+				const uniqueSvc = new SvelteMap<string, Service>();
 				svcData.forEach((s: Service) => {
 					if (s.id) uniqueSvc.set(s.id, s);
 				});
diff --git a/frontend/src/lib/components/admin/ServicesManagement.svelte b/frontend/src/lib/components/admin/ServicesManagement.svelte
index b51dc2a..e28dbc5 100644
--- a/frontend/src/lib/components/admin/ServicesManagement.svelte
+++ b/frontend/src/lib/components/admin/ServicesManagement.svelte
@@ -8,7 +8,7 @@
 	import { Input } from '$lib/components/ui/input';
 	import * as Modal from '$lib/components/ui/dialog';
 	import { Skeleton } from '$lib/components/ui/skeleton';
-import { SvelteMap } from 'svelte/reactivity';
+	import { SvelteMap } from 'svelte/reactivity';
 
 	// =============== Types ===============
 	type Service = {
@@ -151,7 +151,7 @@ import { SvelteMap } from 'svelte/reactivity';
 
 			if (response.ok) {
 				const data = await response.json();
-				const uniqueServices = new SvelteMap();
+				const uniqueServices = new SvelteMap<string, Service>();
 				data.forEach((s: Service) => {
 					if (s.id) uniqueServices.set(s.id, s);
 				});
diff --git a/frontend/src/lib/components/admin/TimeBlockers.svelte b/frontend/src/lib/components/admin/TimeBlockers.svelte
index 3cbb33a..7026869 100644
--- a/frontend/src/lib/components/admin/TimeBlockers.svelte
+++ b/frontend/src/lib/components/admin/TimeBlockers.svelte
@@ -876,11 +876,10 @@
 											hour: 'numeric',
 											minute: '2-digit',
 											hour12: true
-										})}}
-										 · 
+										})}} ·
 										{formatDuration(booking.duration_minutes)}
 										{#if booking.services?.length}
-											 · 
+											·
 											{booking.services.join(', ')}
 										{/if}
 									</div>
diff --git a/frontend/src/lib/components/admin/UsersCard.svelte b/frontend/src/lib/components/admin/UsersCard.svelte
index 09d3716..3261c52 100644
--- a/frontend/src/lib/components/admin/UsersCard.svelte
+++ b/frontend/src/lib/components/admin/UsersCard.svelte
@@ -6,7 +6,7 @@
 	import { Button } from '$lib/components/ui/button';
 	import { Skeleton } from '$lib/components/ui/skeleton';
 	import { formatUserName } from '$lib/utils/nameDisplay';
-import { SvelteURLSearchParams } from 'svelte/reactivity';
+	import { SvelteURLSearchParams } from 'svelte/reactivity';
 
 	interface Props {
 		openUserModal: (userId: string) => void;
diff --git a/frontend/src/lib/components/admin/WalkInBooking.svelte b/frontend/src/lib/components/admin/WalkInBooking.svelte
index c178d95..edb9921 100644
--- a/frontend/src/lib/components/admin/WalkInBooking.svelte
+++ b/frontend/src/lib/components/admin/WalkInBooking.svelte
@@ -175,7 +175,10 @@
 			const dayEndTimeVal = minutesToTime(dayEndMinutesVal);
 
 			if (shouldApplyLunchProtection(dayStartTimeVal, dayEndTimeVal)) {
-				const { windowStart, windowEnd: _windowEnd } = calculateMiddleWindow(dayStartTimeVal, dayEndTimeVal);
+				const { windowStart, windowEnd: _windowEnd } = calculateMiddleWindow(
+					dayStartTimeVal,
+					dayEndTimeVal
+				);
 				const lunchWalkerBlocker = {
 					startTime: minutesToTime(windowStart),
 					endTime: minutesToTime(windowStart + 60)
@@ -447,6 +450,6 @@
 		maxSlotDuration={reservedDuration}
 		availableStartTime={reservedStartTime ?? undefined}
 		{reservationExpiresAt}
-		onclose={handleModalClose}
+		_onclose={handleModalClose}
 	/>
 {/if}
diff --git a/frontend/src/lib/components/admin/WeeklySchedule.svelte b/frontend/src/lib/components/admin/WeeklySchedule.svelte
index bd1a4e4..564aa4f 100644
--- a/frontend/src/lib/components/admin/WeeklySchedule.svelte
+++ b/frontend/src/lib/components/admin/WeeklySchedule.svelte
@@ -112,12 +112,14 @@
 
 			if (response.ok) {
 				const data = await response.json();
-				defaultHours = data.map((hour: { weekday: number; startTime: string; endTime: string; isOpen: boolean }) => ({
-					weekday: hour.weekday,
-					start_time: formatTime(hour.startTime),
-					end_time: formatTime(hour.endTime),
-					is_open: hour.isOpen
-				}));
+				defaultHours = data.map(
+					(hour: { weekday: number; startTime: string; endTime: string; isOpen: boolean }) => ({
+						weekday: hour.weekday,
+						start_time: formatTime(hour.startTime),
+						end_time: formatTime(hour.endTime),
+						is_open: hour.isOpen
+					})
+				);
 			} else {
 				const text = await response.text();
 				error = 'Failed to load working hours: ' + text;
diff --git a/frontend/src/lib/components/booking/BookingFlow.svelte b/frontend/src/lib/components/booking/BookingFlow.svelte
index 314fd5e..193f60e 100644
--- a/frontend/src/lib/components/booking/BookingFlow.svelte
+++ b/frontend/src/lib/components/booking/BookingFlow.svelte
@@ -37,10 +37,7 @@
 	import PolicyPopover from '$lib/components/ui/policyPopover.svelte';
 	import { POLICY } from '$lib/constants/policy';
 	import UserPaymentModal from '$lib/components/payments/UserPaymentModal.svelte';
-	import {
-		extractBookedSlots,
-		getLunchProtectionForSlots,
-	} from '$lib/lunchProtection';
+	import { extractBookedSlots, getLunchProtectionForSlots } from '$lib/lunchProtection';
 	import { formatLocalDateTime, getLondonTodayCalendarDate } from '$lib/utils/timeSlots';
 
 	import type {
@@ -252,7 +249,6 @@
 		}
 	}
 
-
 	function calculateDepositRequired(): boolean {
 		if (!selectedDate || !selectedTime) return false;
 
@@ -343,15 +339,10 @@
 
 	let paymentAttempted = $state(false);
 
-
-
-
 	function formatCardExpiry(month: number, year: number): string {
 		return `${String(month).padStart(2, '0')}/${year.toString().slice(-2)}`;
 	}
 
-
-
 	// Fetch user deposit and active booking status when step 1 is reached
 	$effect(() => {
 		if (currentStep === 1 && authStore.isAuthenticated) {
@@ -1593,8 +1584,11 @@
 									<p>
 										We are currently asking for deposits on upcoming bookings. While this is active,
 										only one online booking can be made at a time. If you need another appointment
-										please <a href="/contact" target="_blank" rel="external" class="font-medium underline"
-											>contact us</a
+										please <a
+											href="/contact"
+											target="_blank"
+											rel="external"
+											class="font-medium underline">contact us</a
 										>.
 									</p>
 								</div>
@@ -1617,7 +1611,7 @@
 							a bespoke treatment.
 						</p>
 						<a
-							href={resolve("/contact")}
+							href={resolve('/contact')}
 							class="mt-1 inline-block text-sm font-medium text-blue-600 hover:underline"
 						>
 							Arrange a custom booking →
@@ -1858,13 +1852,13 @@
 						{#if emailSuggestion === 'login'}
 							<p class="text-xs font-medium text-red-500">
 								This email belongs to a registered user. Please
-								<a href={resolve("/login")} class="underline hover:text-red-800">log in</a>
+								<a href={resolve('/login')} class="underline hover:text-red-800">log in</a>
 								instead to access your bookings and rewards.
 							</p>
 						{:else if emailSuggestion === 'check'}
 							<p class="text-xs font-medium text-amber-600">
 								This email might belong to an existing account. Please double-check or
-								<a href={resolve("/login")} class="underline hover:text-amber-800">log in</a>.
+								<a href={resolve('/login')} class="underline hover:text-amber-800">log in</a>.
 							</p>
 						{/if}
 					{/if}
diff --git a/frontend/src/lib/components/booking/SelectedTimeSummary.svelte b/frontend/src/lib/components/booking/SelectedTimeSummary.svelte
index 20fefdd..ef64f90 100644
--- a/frontend/src/lib/components/booking/SelectedTimeSummary.svelte
+++ b/frontend/src/lib/components/booking/SelectedTimeSummary.svelte
@@ -96,8 +96,8 @@
 	</div>
 	<div class="mt-1 text-sm text-emerald-700">
 		{selectedDate} at {selectedTime}
-		 — 
+		—
 		{endTime}
-		 ({duration} min)
+		({duration} min)
 	</div>
 </div>
diff --git a/frontend/src/lib/components/layout/NavBar.svelte b/frontend/src/lib/components/layout/NavBar.svelte
index 15f03dc..0b0bb62 100644
--- a/frontend/src/lib/components/layout/NavBar.svelte
+++ b/frontend/src/lib/components/layout/NavBar.svelte
@@ -230,6 +230,7 @@
 						{#if isLoading}
 							<Skeleton class="h-4 w-full rounded" />
 						{:else}
+							<!-- eslint-disable-next-line svelte/no-navigation-without-resolve -->
 							<a
 								href={link.href}
 								class="block rounded px-3 py-2 text-center text-primary hover:text-gray-800"
diff --git a/frontend/src/lib/components/payments/PaymentModal.svelte b/frontend/src/lib/components/payments/PaymentModal.svelte
index b701fea..281ac36 100644
--- a/frontend/src/lib/components/payments/PaymentModal.svelte
+++ b/frontend/src/lib/components/payments/PaymentModal.svelte
@@ -299,7 +299,7 @@
 			startPolling();
 		} catch (_err) {
 			status = 'error';
-			error =  _err instanceof Error ? _err.message : 'Failed to initiate payment';
+			error = _err instanceof Error ? _err.message : 'Failed to initiate payment';
 			toast.error(error ?? 'Unknown error');
 		}
 	}
@@ -452,7 +452,7 @@
 			onComplete(paymentResult);
 		} catch (_err) {
 			status = 'error';
-			error =  _err instanceof Error ? _err.message : 'Failed to process payment';
+			error = _err instanceof Error ? _err.message : 'Failed to process payment';
 			toast.error(error ?? 'Unknown error');
 		}
 	}
@@ -543,7 +543,12 @@
 		try {
 			await applyLoyaltyRedemption();
 
-			const body: { amount: number; payment_type: string; payment_method: string; gift_card_id?: string } = {
+			const body: {
+				amount: number;
+				payment_type: string;
+				payment_method: string;
+				gift_card_id?: string;
+			} = {
 				amount: payAmountCents,
 				payment_type: 'full',
 				payment_method: 'giftcard'
@@ -577,7 +582,7 @@
 			onComplete(paymentResult);
 		} catch (_err) {
 			status = 'error';
-			error =  _err instanceof Error ? _err.message : 'Failed to process gift card';
+			error = _err instanceof Error ? _err.message : 'Failed to process gift card';
 			toast.error(error ?? 'Unknown error');
 		}
 	}
@@ -659,7 +664,7 @@
 			onComplete(paymentResult);
 		} catch (_err) {
 			status = 'error';
-			error =  _err instanceof Error ? _err.message : 'Failed to process saved card payment';
+			error = _err instanceof Error ? _err.message : 'Failed to process saved card payment';
 			toast.error(error ?? 'Unknown error');
 		}
 	}
diff --git a/frontend/src/lib/components/payments/UserPaymentModal.svelte b/frontend/src/lib/components/payments/UserPaymentModal.svelte
index e1bad05..5444ba5 100644
--- a/frontend/src/lib/components/payments/UserPaymentModal.svelte
+++ b/frontend/src/lib/components/payments/UserPaymentModal.svelte
@@ -217,7 +217,7 @@
 	// state. The backend will split the charge into deposit + non-deposit records
 	// when appropriate, so this choice mainly controls the button label and amount.
 	const defaultType = $derived(defaultPaymentType ?? (depositOutstanding ? 'deposit' : 'full'));
-	// eslint-disable-next-line svelte/prefer-writable-derived — $derived.writable not in Svelte 5 stable
+	// eslint-disable-next-line svelte/prefer-writable-derived
 	let paymentType = $state<'full' | 'partial' | 'deposit'>('full');
 	$effect(() => {
 		paymentType = defaultType as 'full' | 'partial' | 'deposit';
diff --git a/frontend/src/lib/components/today/TodayCalendar.svelte b/frontend/src/lib/components/today/TodayCalendar.svelte
index 49a9117..0088883 100644
--- a/frontend/src/lib/components/today/TodayCalendar.svelte
+++ b/frontend/src/lib/components/today/TodayCalendar.svelte
@@ -1034,9 +1034,9 @@
 											minute: '2-digit',
 											hour12: true
 										})}
-										 · {formatDuration(booking.duration_minutes)}
+										· {formatDuration(booking.duration_minutes)}
 										{#if booking.services?.length}
-											 · {booking.services.join(', ')}{/if}
+											· {booking.services.join(', ')}{/if}
 									</div>
 								</div>
 								<div class="mt-1.5 flex gap-2">
diff --git a/frontend/src/lib/components/ui/map/MapPopup.svelte b/frontend/src/lib/components/ui/map/MapPopup.svelte
index aab38c0..808ae98 100644
--- a/frontend/src/lib/components/ui/map/MapPopup.svelte
+++ b/frontend/src/lib/components/ui/map/MapPopup.svelte
@@ -48,7 +48,7 @@
 	let wrapperElement: HTMLDivElement | null = $state(null);
 
 	// Create popup when map is ready
-	// eslint-disable-next-line svelte/no-dom-manipulating
+	 
 	$effect(() => {
 		const map = mapCtx.getMap();
 		const loaded = mapCtx.isLoaded();
diff --git a/frontend/src/lib/components/ui/map/MarkerContent.svelte b/frontend/src/lib/components/ui/map/MarkerContent.svelte
index cb402bf..26469b6 100644
--- a/frontend/src/lib/components/ui/map/MarkerContent.svelte
+++ b/frontend/src/lib/components/ui/map/MarkerContent.svelte
@@ -21,7 +21,7 @@
 	let movedContent: Node[] = [];
 
 	// Move content to marker element when ready
-	// eslint-disable-next-line svelte/no-dom-manipulating
+	 
 	$effect(() => {
 		const element = markerCtx.getElement();
 		const ready = markerCtx.isReady();
diff --git a/frontend/src/lib/components/ui/map/MarkerPopup.svelte b/frontend/src/lib/components/ui/map/MarkerPopup.svelte
index 3491f36..cf6a5c5 100644
--- a/frontend/src/lib/components/ui/map/MarkerPopup.svelte
+++ b/frontend/src/lib/components/ui/map/MarkerPopup.svelte
@@ -42,7 +42,7 @@
 	let shouldStayOpen = $state(false);
 
 	// Create popup when marker is ready
-	// eslint-disable-next-line svelte/no-dom-manipulating
+	 
 	$effect(() => {
 		const marker = markerCtx.getMarker();
 		const ready = markerCtx.isReady();
diff --git a/frontend/src/lib/components/ui/map/MarkerTooltip.svelte b/frontend/src/lib/components/ui/map/MarkerTooltip.svelte
index f64ac32..3397c53 100644
--- a/frontend/src/lib/components/ui/map/MarkerTooltip.svelte
+++ b/frontend/src/lib/components/ui/map/MarkerTooltip.svelte
@@ -22,7 +22,7 @@
 	let wrapperElement: HTMLDivElement | null = $state(null);
 
 	// Create tooltip popup when marker is ready
-	// eslint-disable-next-line svelte/no-dom-manipulating
+	 
 	$effect(() => {
 		const marker = markerCtx.getMarker();
 		const markerElement = markerCtx.getElement();
diff --git a/frontend/src/lib/stores/auth.svelte.ts b/frontend/src/lib/stores/auth.svelte.ts
index 066d669..ffce833 100644
--- a/frontend/src/lib/stores/auth.svelte.ts
+++ b/frontend/src/lib/stores/auth.svelte.ts
@@ -161,6 +161,7 @@ class AuthStore {
 					method: 'POST',
 					headers: { Authorization: `Bearer ${this.token}` }
 				});
+		// eslint-disable-next-line @typescript-eslint/no-unused-vars
 			} catch (e) {
 				// Ignore network errors - still clear local state
 			}
diff --git a/frontend/src/routes/+page.svelte b/frontend/src/routes/+page.svelte
index 837d0bc..683c6b5 100644
--- a/frontend/src/routes/+page.svelte
+++ b/frontend/src/routes/+page.svelte
@@ -9,7 +9,7 @@
 	// Redirect admins to /today (their homepage)
 	$effect(() => {
 		if (!authStore.isLoading && authStore.currentUser?.role === 'admin') {
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/today', { replaceState: true });
 		}
 	});
diff --git a/frontend/src/routes/account/+page.svelte b/frontend/src/routes/account/+page.svelte
index 13f8e37..0473286 100644
--- a/frontend/src/routes/account/+page.svelte
+++ b/frontend/src/routes/account/+page.svelte
@@ -94,7 +94,9 @@
 	let userData = $state<User | null>(null);
 	let loadingUser = $state(true);
 	let stamps = $state(0);
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	let pendingRedemption = $state(false);
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	let uploadingPic = $state(false);
 
 	function getStampPath(slotNum: number): string {
@@ -728,9 +730,11 @@
 	let phoneError = $state('');
 	let savingPhone = $state(false);
 
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	// Phone validation (UK format)
 	function validatePhone(phone: string): boolean {
 		return isValidUKPhone(phone);
+	// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	}
 
 	function formatPhoneInput(value: string): string {
diff --git a/frontend/src/routes/admin/+page.svelte b/frontend/src/routes/admin/+page.svelte
index 78e21d8..92a70f0 100644
--- a/frontend/src/routes/admin/+page.svelte
+++ b/frontend/src/routes/admin/+page.svelte
@@ -34,14 +34,14 @@
 
 		if (!authStore.isAuthenticated) {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/login', { replaceState: true });
 			return;
 		}
 
 		if (authStore.currentUser?.role !== 'admin') {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/', { replaceState: true });
 			return;
 		}
diff --git a/frontend/src/routes/admin/notifications/+page.svelte b/frontend/src/routes/admin/notifications/+page.svelte
index b362e76..66f54c5 100644
--- a/frontend/src/routes/admin/notifications/+page.svelte
+++ b/frontend/src/routes/admin/notifications/+page.svelte
@@ -77,7 +77,7 @@
 	let selectedEditRequest = $state<EditRequest | null>(null);
 
 	function openBookingModal(bookingId: string) {
-		selectedBooking = { id: bookingId };
+		selectedBooking = { id: bookingId } as Booking;
 		showBookingModal = true;
 	}
 
diff --git a/frontend/src/routes/admin/schedule/+page.svelte b/frontend/src/routes/admin/schedule/+page.svelte
index 9d8b82a..72c8e59 100644
--- a/frontend/src/routes/admin/schedule/+page.svelte
+++ b/frontend/src/routes/admin/schedule/+page.svelte
@@ -70,7 +70,7 @@
 		}
 		if (!authStore.isAuthenticated || authStore.currentUser?.role !== 'admin') {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto(authStore.isAuthenticated ? '/' : '/login', { replaceState: true });
 			return;
 		}
diff --git a/frontend/src/routes/cancellation-policy/+page.svelte b/frontend/src/routes/cancellation-policy/+page.svelte
index 9dcff40..680dac5 100644
--- a/frontend/src/routes/cancellation-policy/+page.svelte
+++ b/frontend/src/routes/cancellation-policy/+page.svelte
@@ -1,6 +1,6 @@
 <script lang="ts">
 	import { page } from '$app/stores';
-import { resolve } from '$app/paths';
+	import { resolve } from '$app/paths';
 	import { onMount } from 'svelte';
 
 	let format = $state('html');
@@ -263,7 +263,7 @@ import { resolve } from '$app/paths';
 			<p class="text-xs text-gray-500">
 				If you need to request an adjustment due to exceptional circumstances or have questions
 				regarding your upcoming appointments, please use our official <a
-					href={resolve("/contact")}
+					href={resolve('/contact')}
 					class="font-medium text-blue-600 underline hover:text-blue-800">Contact Channels</a
 				> to get in touch.
 			</p>
diff --git a/frontend/src/routes/gdpr/+page.svelte b/frontend/src/routes/gdpr/+page.svelte
index f7fc6b6..35903d2 100644
--- a/frontend/src/routes/gdpr/+page.svelte
+++ b/frontend/src/routes/gdpr/+page.svelte
@@ -245,6 +245,7 @@ import { SvelteMap } from 'svelte/reactivity';
 				errorMessage = `Failed to fetch data (${res.status}): ${text}`;
 				pageState = 'error';
 			}
+		// eslint-disable-next-line @typescript-eslint/no-unused-vars
 		} catch (e) {
 			errorMessage = 'Network error — could not connect to server.';
 			pageState = 'error';
diff --git a/frontend/src/routes/pay-tip/[id]/+page.svelte b/frontend/src/routes/pay-tip/[id]/+page.svelte
index 8d076e8..ac05635 100644
--- a/frontend/src/routes/pay-tip/[id]/+page.svelte
+++ b/frontend/src/routes/pay-tip/[id]/+page.svelte
@@ -206,14 +206,14 @@
 
 		if (!authStore.isAuthenticated) {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/login', { replaceState: true });
 			return;
 		}
 
 		if (authStore.currentUser?.role === 'admin') {
 			pageState = 'admin';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/admin', { replaceState: true });
 			return;
 		}
diff --git a/frontend/src/routes/schedule/+page.svelte b/frontend/src/routes/schedule/+page.svelte
index a0a0dac..09dac95 100644
--- a/frontend/src/routes/schedule/+page.svelte
+++ b/frontend/src/routes/schedule/+page.svelte
@@ -26,7 +26,7 @@
 		}
 		if (!authStore.isAuthenticated) {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/login', { replaceState: true });
 			return;
 		}
diff --git a/frontend/src/routes/tip/+page.svelte b/frontend/src/routes/tip/+page.svelte
index 3564f62..82f037b 100644
--- a/frontend/src/routes/tip/+page.svelte
+++ b/frontend/src/routes/tip/+page.svelte
@@ -39,6 +39,7 @@
 		payments?: Payment[];
 	};
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 	let pageState = $state<'loading' | 'authorized' | 'unauthorized' | 'admin'>('loading');
 	let loading = $state(true);
 	let error = $state<string | null>(null);
diff --git a/frontend/src/routes/today/+page.svelte b/frontend/src/routes/today/+page.svelte
index 0831559..663cfd4 100644
--- a/frontend/src/routes/today/+page.svelte
+++ b/frontend/src/routes/today/+page.svelte
@@ -30,14 +30,14 @@
 
 		if (!authStore.isAuthenticated) {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/login', { replaceState: true });
 			return;
 		}
 
 		if (authStore.currentUser?.role !== 'admin') {
 			pageState = 'unauthorized';
-		// eslint-disable-next-line svelte/no-navigation-without-resolve
+			// eslint-disable-next-line svelte/no-navigation-without-resolve
 			goto('/', { replaceState: true });
 			return;
 		}