ui: Sidebar Conversations Bulk Action + Improved Settings logic/UI (#25815)

* feat: WIP

* feat: Replace conversation rename flow with unified AlertDialog component

* feat: Add radio group component and consolidate title generation settings

* refactor: Remove JS Sandbox global toggle and migrate legacy user state

* chore: Formatting

* refactor: Cleanup

Co-authored-by: Aleksander Grygier <aleksander.grygier@gmail.com>

* refactor: Cleanup

* refactor: Marquee selection hook

* feat: UI improvements

* refactor: Bulk db operations

* fix: optimize bulk conversation deletion to handle ancestor chains

* refactor: remove pairedKey mechanism from settings system

* fix: remove redundant onclick handler from dialog cancel button

* chore: pin @lucide/svelte to exact version

* feat: Run JavaScript tool disabled by default

* fix: correct active conversation deletion tracking in bulk delete

* feat: improve shift-key multi-selection support in sidebar via keyboard

* refactor: Retrieve JS Tool enabling via Developer Settings

* nits: sync, dialog wording, cycle guard, and lockfile follow-ups

- Restore titleGenerationUseLLM registry entry so it syncs across devices again
- Mention fork cascade in the bulk delete confirmation dialog
- Clear newParent on cycle guard break so children never point at a deleted conversation
- Align @lucide/svelte in package-lock.json with the exact pin in package.json

---------

Co-authored-by: Pascal <admin@serveurperso.com>

tools/ui/src/routes/+layout.svelte

@@ -7,12 +7,11 @@
 	import { untrack } from 'svelte';
 	import { onMount } from 'svelte';
 
-	import { SidebarNavigation, DialogConversationTitleUpdate } from '$lib/components/app';
+	import { SidebarNavigation } from '$lib/components/app';
 	import { PwaMetaTags, PwaRefreshAlert } from '$lib/components/pwa';
 	import { pwaAssetsHead } from 'virtual:pwa-assets/head';
 
 	import { chatStore } from '$lib/stores/chat.svelte';
-	import { conversationsStore } from '$lib/stores/conversations.svelte';
 	import * as Tooltip from '$lib/components/ui/tooltip';
 	import { isRouterMode, serverStore } from '$lib/stores/server.svelte';
 	import { config, settingsStore } from '$lib/stores/settings.svelte';
@@ -46,11 +45,6 @@
 
 	let showBuildVersion = $derived(config()[SETTINGS_KEYS.SHOW_BUILD_VERSION] as boolean);
 
-	let titleUpdateDialogOpen = $state(false);
-	let titleUpdateCurrentTitle = $state('');
-	let titleUpdateNewTitle = $state('');
-	let titleUpdateResolve: ((value: boolean) => void) | null = null;
-
 	// Keep the hook object intact: destructuring needRefreshByStorage reads the getter once and freezes it
 	const pwa = usePwa();
 	const { needRefresh, updateServiceWorker } = pwa;
@@ -135,24 +129,6 @@
 		});
 	}
 
-	function handleTitleUpdateCancel() {
-		titleUpdateDialogOpen = false;
-
-		if (titleUpdateResolve) {
-			titleUpdateResolve(false);
-			titleUpdateResolve = null;
-		}
-	}
-
-	function handleTitleUpdateConfirm() {
-		titleUpdateDialogOpen = false;
-
-		if (titleUpdateResolve) {
-			titleUpdateResolve(true);
-			titleUpdateResolve = null;
-		}
-	}
-
 	onMount(() => {
 		updateFavicon();
 		// snapshot of every backend running stream on first load, populates the sidebar spinners
@@ -264,20 +240,6 @@
 	$effect(() => {
 		checkApiKey();
 	});
-
-	// Set up title update confirmation callback
-	$effect(() => {
-		conversationsStore.setTitleUpdateConfirmationCallback(
-			async (currentTitle: string, newTitle: string) => {
-				return new Promise<boolean>((resolve) => {
-					titleUpdateCurrentTitle = currentTitle;
-					titleUpdateNewTitle = newTitle;
-					titleUpdateResolve = resolve;
-					titleUpdateDialogOpen = true;
-				});
-			}
-		);
-	});
 </script>
 
 <svelte:head>
@@ -319,14 +281,6 @@
 	<ModeWatcher />
 
 	<Toaster richColors />
-
-	<DialogConversationTitleUpdate
-		bind:open={titleUpdateDialogOpen}
-		currentTitle={titleUpdateCurrentTitle}
-		newTitle={titleUpdateNewTitle}
-		onConfirm={handleTitleUpdateConfirm}
-		onCancel={handleTitleUpdateCancel}
-	/>
 </Tooltip.Provider>
 
 <!-- PWA update prompt + version -->