feat: launch ArborFlow behavior tree studio

src/lib/project.ts

@@ -0,0 +1,41 @@
+import type { BehaviorTreeDocument } from '../types'
+
+export function serializeProject(document: BehaviorTreeDocument) {
+  return JSON.stringify(document, null, 2) + '\n'
+}
+
+export function parseProject(content: string): BehaviorTreeDocument {
+  const value: unknown = JSON.parse(content)
+  if (!value || typeof value !== 'object') throw new Error('工程文件内容无效')
+  const candidate = value as Partial<BehaviorTreeDocument>
+  if (candidate.format !== 'arborflow/project' || candidate.version !== 1) {
+    throw new Error('不是受支持的 ArborFlow 工程文件')
+  }
+  if (!Array.isArray(candidate.nodes) || !Array.isArray(candidate.edges)) {
+    throw new Error('工程文件缺少节点或连接数据')
+  }
+  return candidate as BehaviorTreeDocument
+}
+
+export function downloadText(filename: string, content: string, type = 'text/plain') {
+  const blob = new Blob([content], { type })
+  const url = URL.createObjectURL(blob)
+  const anchor = document.createElement('a')
+  anchor.href = url
+  anchor.download = filename
+  anchor.click()
+  URL.revokeObjectURL(url)
+}
+
+export function pickBrowserFile(accept: string) {
+  return new Promise<{ path: string; content: string } | null>((resolve) => {
+    const input = document.createElement('input')
+    input.type = 'file'
+    input.accept = accept
+    input.onchange = async () => {
+      const file = input.files?.[0]
+      resolve(file ? { path: file.name, content: await file.text() } : null)
+    }
+    input.click()
+  })
+}