fix(desktop): Path mismatches cause sessions missing + strong ID + existing data fix (#25013)

packages/app/src/utils/path-key.ts

@@ -0,0 +1,24 @@
+export type PathKey = string & { _brand: "PathKey" }
+
+const isDrive = (value: string) => {
+  if (value.length !== 2) return false
+  const code = value.charCodeAt(0)
+  return value[1] === ":" && ((code >= 65 && code <= 90) || (code >= 97 && code <= 122))
+}
+
+const trimTrailingSlashes = (value: string) => {
+  for (let i = value.length - 1; i >= 0; i--) {
+    if (value[i] !== "/") return value.slice(0, i + 1)
+  }
+  return ""
+}
+
+const isWindowsPath = (value: string) => value[1] === ":" || value.startsWith("\\\\")
+
+export const pathKey = (path: string) => {
+  const value = isWindowsPath(path) ? path.replaceAll("\\", "/") : path
+  const trimmed = trimTrailingSlashes(value)
+  if (!trimmed && value.startsWith("/")) return "/" as PathKey
+  if (isDrive(trimmed)) return `${trimmed}/` as PathKey
+  return trimmed as PathKey
+}