lint: remove unused imports and variables (8 fixes)

Co-Authored-By: Justin Edmund <justin@jedmund.com>

src/lib/components/Slideshow.svelte

@@ -117,7 +117,7 @@
 
 		{#if showThumbnails}
 			<div class="thumbnails">
-				{#each Array(totalSlots) as _slot, index}
+				{#each Array(totalSlots) as _, index}
 					{#if index < displayItems.length}
 						<button
 							class="thumbnail"

src/lib/components/admin/AlbumForm.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-	import { z } from 'zod'
 	import AdminPage from './AdminPage.svelte'
 	import AdminSegmentedControl from './AdminSegmentedControl.svelte'
 	import Input from './Input.svelte'

src/lib/components/admin/MediaUploadModal.svelte

@@ -3,7 +3,6 @@
 	import Button from './Button.svelte'
 	import FileUploadZone from './FileUploadZone.svelte'
 	import FilePreviewList from './FilePreviewList.svelte'
-	import { formatFileSize } from '$lib/utils/mediaHelpers'
 
 	interface Props {
 		isOpen: boolean
@@ -59,7 +58,7 @@
 			files = files.filter((f) => f.name !== id)
 			// Clear any related upload progress
 			if (uploadProgress[fileToRemove.name]) {
-				const { [fileToRemove.name]: removed, ...rest } = uploadProgress
+				const { [fileToRemove.name]: _, ...rest } = uploadProgress
 				uploadProgress = rest
 			}
 		}
@@ -92,7 +91,7 @@
 					successCount++
 					uploadProgress = { ...uploadProgress, [file.name]: 100 }
 				}
-			} catch (error) {
+			} catch {
 				uploadErrors = [...uploadErrors, `${file.name}: Network error`]
 			}
 		}

src/lib/components/admin/PostMetadataPopover.svelte

@@ -4,7 +4,6 @@
 
 	type Props = {
 		post: Post
-		postType: 'post' | 'essay'
 		slug: string
 		tags: string[]
 		tagInput: string
@@ -18,7 +17,6 @@
 
 	let {
 		post,
-		postType,
 		slug = $bindable(),
 		tags = $bindable(),
 		tagInput = $bindable(),

src/lib/components/admin/ProjectForm.svelte

@@ -6,7 +6,6 @@
 	import Composer from './composer'
 	import ProjectMetadataForm from './ProjectMetadataForm.svelte'
 	import ProjectBrandingForm from './ProjectBrandingForm.svelte'
-	import ProjectImagesForm from './ProjectImagesForm.svelte'
 	import AutoSaveStatus from './AutoSaveStatus.svelte'
 	import DraftPrompt from './DraftPrompt.svelte'
 	import { toast } from '$lib/stores/toast'
@@ -32,7 +31,6 @@
 	// UI state
 	let isLoading = $state(mode === 'edit')
 	let hasLoaded = $state(mode === 'create')
-	let isSaving = $state(false)
 	let activeTab = $state('metadata')
 	let error = $state<string | null>(null)
 	let successMessage = $state<string | null>(null)
@@ -134,8 +132,6 @@
 		const loadingToastId = toast.loading(`${mode === 'edit' ? 'Saving' : 'Creating'} project...`)
 
 		try {
-			isSaving = true
-
 			const payload = {
 				...formStore.buildPayload(),
 				// Include updatedAt for concurrency control in edit mode
@@ -165,8 +161,6 @@
 				toast.error(`Failed to ${mode === 'edit' ? 'save' : 'create'} project`)
 			}
 			console.error(err)
-		} finally {
-			isSaving = false
 		}
 	}
 

src/lib/components/admin/SimplePostForm.svelte

@@ -187,7 +187,7 @@ $effect(() => {
 })
 
 // Navigation guard: flush autosave before navigating away (only if unsaved)
-beforeNavigate(async (navigation) => {
+beforeNavigate(async (_navigation) => {
 	if (hasLoaded && autoSave) {
 		if (autoSave.status === 'saved') {
 			return