fix: clear stale editor state on vault switch

src/utils/vaultPathContainment.ts

@@ -0,0 +1,20 @@
+function normalizeVaultContainmentPath(path: string): string {
+  return path.replace(/\\/g, '/').replace(/\/+$/, '')
+}
+
+function compareVaultContainmentPath(path: string, vaultPath: string): [string, string] {
+  const normalizedPath = normalizeVaultContainmentPath(path)
+  const normalizedVaultPath = normalizeVaultContainmentPath(vaultPath)
+  const hasWindowsDrive = /^[a-z]:/i.test(normalizedPath) || /^[a-z]:/i.test(normalizedVaultPath)
+  return hasWindowsDrive
+    ? [normalizedPath.toLowerCase(), normalizedVaultPath.toLowerCase()]
+    : [normalizedPath, normalizedVaultPath]
+}
+
+export function canWritePathToVault(path: string, vaultPath: string): boolean {
+  const trimmedVaultPath = vaultPath.trim()
+  if (!trimmedVaultPath) return true
+  const [targetPath, rootPath] = compareVaultContainmentPath(path, trimmedVaultPath)
+  if (!rootPath || !targetPath) return false
+  return targetPath === rootPath || targetPath.startsWith(`${rootPath}/`)
+}