OK

src/lib/Canvas.svelte

@@ -125,9 +125,56 @@
 	function handleDragOver(e: DragEvent) {
 		e.preventDefault();
 	}
+
+	function handleKeyDown(e: KeyboardEvent) {
+		if (state.editingId || state.editingGlobal) return;
+		if (state.focusedId) return;
+		const tag = (e.target as HTMLElement)?.tagName;
+		if (tag === 'INPUT' || tag === 'TEXTAREA') return;
+		if ((e.target as HTMLElement)?.isContentEditable) return;
+
+		const mod = e.metaKey || e.ctrlKey;
+		const rect = container.getBoundingClientRect();
+		const centerX = (rect.width / 2 - state.viewport.x) / state.viewport.zoom;
+		const centerY = (rect.height / 2 - state.viewport.y) / state.viewport.zoom;
+
+		if (mod && e.key === 'c' && state.selectedId) {
+			e.preventDefault();
+			state.copyItem(state.selectedId);
+		} else if (mod && e.key === 'v') {
+			e.preventDefault();
+			const newId = state.pasteItem(centerX, centerY);
+			if (newId) state.select(newId);
+		} else if (mod && e.key === 'd' && state.selectedId) {
+			e.preventDefault();
+			const newId = state.duplicateItem(state.selectedId, centerX, centerY);
+			if (newId) state.select(newId);
+		} else if (e.key === 'Escape') {
+			state.select(null);
+			state.focus(null);
+		} else if (e.key === '[' && state.selectedId) {
+			e.preventDefault();
+			state.sendBackward(state.selectedId);
+		} else if (e.key === ']' && state.selectedId) {
+			e.preventDefault();
+			state.bringForward(state.selectedId);
+		} else if (e.key.startsWith('Arrow') && state.selectedId) {
+			e.preventDefault();
+			const step = e.shiftKey ? 10 : 1;
+			const item = state.getItem(state.selectedId);
+			if (!item) return;
+			const dx = e.key === 'ArrowLeft' ? -step : e.key === 'ArrowRight' ? step : 0;
+			const dy = e.key === 'ArrowUp' ? -step : e.key === 'ArrowDown' ? step : 0;
+			state.updateItem(state.selectedId, { x: item.x + dx, y: item.y + dy });
+		} else if (e.key === 'e' && state.selectedId && !mod) {
+			e.preventDefault();
+			state.focus(state.selectedId);
+			state.edit(state.selectedId);
+		}
+	}
 </script>
 
-<svelte:window onmouseup={handleMouseUp} onmousemove={handleMouseMove} />
+<svelte:window onmouseup={handleMouseUp} onmousemove={handleMouseMove} onkeydown={handleKeyDown} />
 
 <!-- svelte-ignore a11y_no_static_element_interactions -->
 <div

src/lib/Editor.svelte

@@ -21,6 +21,7 @@
 
 	let activeTab = $state<'html' | 'css' | 'shared' | 'app'>(mode === 'item' ? 'html' : 'shared');
 	let editMode = $state<EditMode>('normal');
+	let previousItemId = $state<string | null>(null);
 
 	function getKeymapExtension(m: EditMode) {
 		switch (m) {
@@ -152,6 +153,22 @@
 		sharedEditor?.dispatch({ effects: keymapCompartment.reconfigure(ext) });
 		appEditor?.dispatch({ effects: keymapCompartment.reconfigure(ext) });
 	});
+
+	$effect(() => {
+		if (mode === 'item' && item && item.id !== previousItemId) {
+			previousItemId = item.id;
+			if (htmlEditor) {
+				htmlEditor.dispatch({
+					changes: { from: 0, to: htmlEditor.state.doc.length, insert: item.html }
+				});
+			}
+			if (cssEditor) {
+				cssEditor.dispatch({
+					changes: { from: 0, to: cssEditor.state.doc.length, insert: item.css }
+				});
+			}
+		}
+	});
 </script>
 
 <div class="panel">

src/lib/Item.svelte

@@ -153,6 +153,7 @@
 
 	function handleDoubleClick(e: MouseEvent) {
 		e.stopPropagation();
+		appState.select(item.id);
 		appState.focus(item.id);
 		appState.edit(item.id);
 	}

src/lib/Toolbar.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import { Upload, Download, Paintbrush, Trash2, EyeOff } from 'lucide-svelte';
+	import { Upload, Download, Paintbrush, Trash2, EyeOff, ZoomIn } from 'lucide-svelte';
 	import { exportBoard, importBoard } from './io';
 	import { state } from './state.svelte';
 	import Palette from './Palette.svelte';
@@ -55,6 +55,8 @@
 	}
 
 	let zoomPercent = $derived(Math.round(state.viewport.zoom * 100));
+	let coordX = $derived(Math.round(-state.viewport.x / state.viewport.zoom));
+	let coordY = $derived(Math.round(-state.viewport.y / state.viewport.zoom));
 	const flagKeys = ['1', '2', '3', '4', '5', '6', '7', '8', '9'];
 </script>
 
@@ -75,6 +77,7 @@
 		{/each}
 	</div>
 	<div class="spacer"></div>
+	<span class="coords">{coordX}, {coordY}</span>
 	<div class="zoom">
 		<input
 			type="range"
@@ -85,7 +88,10 @@
 			oninput={handleZoom}
 			title="Zoom"
 		/>
-		<span class="zoom-label">{zoomPercent}%</span>
+		<button class="zoom-reset" onclick={() => state.resetViewport()} title="Reset view (0, 0 at 100%)">
+			<ZoomIn size={12} />
+			<span>{zoomPercent}%</span>
+		</button>
 	</div>
 	<button onclick={() => state.editGlobal(true)} title="Style"><Paintbrush size={14} /></button>
 	<button onclick={handleClear} title="Clear"><Trash2 size={14} /></button>
@@ -198,10 +204,21 @@
 		background: var(--accent, #4a9eff);
 	}
 
-	.zoom-label {
+	.coords {
 		font-size: 11px;
 		color: var(--text-dim, #666);
-		min-width: 36px;
-		text-align: right;
+		display: flex;
+		align-items: center;
+		padding: 0 8px;
+		font-variant-numeric: tabular-nums;
+	}
+
+	.zoom-reset {
+		display: flex;
+		align-items: center;
+		gap: 4px;
+		padding: 2px 6px;
+		font-size: 11px;
+		min-width: 52px;
 	}
 </style>

src/lib/state.svelte.ts

@@ -76,6 +76,7 @@ function createState() {
 	let editingId = $state<string | null>(null);
 	let editingGlobal = $state<boolean>(false);
 	let focusedId = $state<string | null>(null);
+	let clipboard = $state<Omit<Item, 'id'> | null>(null);
 
 	let saveTimeout: ReturnType<typeof setTimeout> | null = null;
 	let animationId: number | null = null;
@@ -201,6 +202,40 @@ function createState() {
 		save();
 	}
 
+	function copyItem(id: string) {
+		const item = manifest.items.find((i) => i.id === id);
+		if (!item) return;
+		const { id: _, ...rest } = item;
+		clipboard = rest;
+	}
+
+	function pasteItem(x: number, y: number): string | null {
+		if (!clipboard) return null;
+		const id = crypto.randomUUID();
+		const newItem = { ...clipboard, id, x, y, zIndex: maxZIndex + 1 };
+		addItem(newItem);
+		return id;
+	}
+
+	function duplicateItem(id: string, x: number, y: number): string | null {
+		copyItem(id);
+		return pasteItem(x, y);
+	}
+
+	function sendBackward(id: string) {
+		const item = manifest.items.find((i) => i.id === id);
+		if (!item || item.zIndex <= 0) return;
+		item.zIndex -= 1;
+		save();
+	}
+
+	function bringForward(id: string) {
+		const item = manifest.items.find((i) => i.id === id);
+		if (!item) return;
+		item.zIndex += 1;
+		save();
+	}
+
 	function pan(dx: number, dy: number) {
 		viewport.x += dx;
 		viewport.y += dy;
@@ -218,6 +253,10 @@ function createState() {
 		viewport.zoom = Math.max(0.1, Math.min(10, zoom));
 	}
 
+	function resetViewport() {
+		animateViewport(0, 0, 1);
+	}
+
 	function hasFlag(key: string): boolean {
 		return !!manifest.flags?.[key];
 	}
@@ -343,9 +382,15 @@ function createState() {
 		updateSharedCss,
 		updateAppCss,
 		bringToFront,
+		copyItem,
+		pasteItem,
+		duplicateItem,
+		sendBackward,
+		bringForward,
 		pan,
 		zoomAt,
 		setZoom,
+		resetViewport,
 		hasFlag,
 		setFlag,
 		clearFlag,