feat: add spacebar hold to temporarily activate Hand (pan) tool

Hold Spacebar to temporarily switch to the Hand tool for panning,
release to return to the previously active tool. This matches the
standard Figma UX pattern.

- Uses separate keydown/keyup event listeners for reliable handling
- Guards against text editing mode and key repeat
- References state.activeTool for correct tool state

Fixes #147

packages/core/src/fonts.ts

@@ -301,7 +301,7 @@ export function collectFontKeys(graph: SceneGraph, nodeIds: string[]): Array<[st
   return [...fontKeys].map((k) => k.split('\0') as [string, string])
 }
 
-let cjkFallbackFamilies: string[] = []
+const cjkFallbackFamilies: string[] = []
 let cjkFallbackPromise: Promise<string[]> | null = null
 
 function getCJKCandidates(): string[] {

packages/core/src/kiwi/kiwi-serialize.ts

@@ -2,23 +2,13 @@ export const FIG_KIWI_VERSION = 106
 
 import { deflateSync, inflateSync } from 'fflate'
 
-<<<<<<< HEAD:packages/core/src/kiwi/kiwi-serialize.ts
 import { getLoadedFontData, normalizeFontFamily, weightToStyle } from '../fonts'
 import { encodeVectorNetworkBlob } from '../vector'
 import { stringToGuid, VARIABLE_BINDING_FIELDS } from './kiwi-convert'
 
 import type { SceneGraph, SceneNode, CharacterStyleOverride } from '../scene-graph'
-import type { Color, GUID } from '../types'
+import type { Color, GUID, Matrix } from '../types'
 import type { NodeChange, Paint, VariableConsumptionEntry } from './codec'
-=======
-import { weightToStyle, getLoadedFontData, normalizeFontFamily } from './fonts'
-import { encodeVectorNetworkBlob } from './vector'
-import { stringToGuid, VARIABLE_BINDING_FIELDS } from './kiwi/kiwi-convert'
-
-import type { NodeChange, Paint, VariableConsumptionEntry } from './kiwi/codec'
-import type { SceneGraph, SceneNode, CharacterStyleOverride } from './scene-graph'
-import type { Color, GUID, Matrix } from './types'
->>>>>>> 4df3671 (fix: kiwi serialization bugs causing broken auto-layout in Figma import):packages/core/src/kiwi-serialize.ts
 
 const fontDigestCache = new Map<string, Uint8Array>()
 

src/composables/use-keyboard.ts

@@ -94,6 +94,28 @@ export function useKeyboard() {
     if (html) store.pasteFromHTML(html, cursorPos)
   })
 
+  // Spacebar hold → temporary Hand tool (Figma-style canvas pan)
+  let toolBeforeSpace: (typeof store.state.activeTool) | null = null
+
+  useEventListener(window, 'keydown', (e: KeyboardEvent) => {
+    if (isEditing(e)) return
+    if (e.code === 'Space' && !e.metaKey && !e.ctrlKey && !e.altKey && !e.repeat) {
+      if (store.state.activeTool !== 'HAND') {
+        toolBeforeSpace = store.state.activeTool
+        store.setTool('HAND')
+      }
+      e.preventDefault()
+    }
+  })
+
+  useEventListener(window, 'keyup', (e: KeyboardEvent) => {
+    if (e.code === 'Space' && toolBeforeSpace) {
+      store.setTool(toolBeforeSpace)
+      toolBeforeSpace = null
+      e.preventDefault()
+    }
+  })
+
   const keys = useMagicKeys({
     passive: false,
     onEventFired(e) {