fix: v2.5.3 — Windows workspace folders, picker on top, no console flashes

A workspace could not be created on Windows: "cwd must be an absolute path"
for D:\…, because createLane/canonicalCwd tested for a leading "/".

- lanes.js: path.isAbsolute/path.resolve; canonicalCwd stops at any root (a
  missing drive looped forever); resolveLaneByCwd and /ensure accept "\" too
- native-dialog.js: the Windows picker gets an invisible TopMost owner form,
  shown first — an ownerless dialog from the background server opened behind
  the browser, or hidden
- windows-hide.js: every child process on Windows starts with windowsHide,
  required first by the server and the detached scripts (a console window
  flashed per git/npm call)
- Confirm/update/clear-data modals and the quota panel scroll instead of
  overflowing a short window

server/lib/lanes.js

@@ -9,6 +9,7 @@
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
+const path = require("node:path");
 const { db } = require("../db");
 const aiTools = require("./ai-tools");
 const {
@@ -182,17 +183,18 @@ function normalizeTitle(value) {
  */
 function canonicalCwd(cwd) {
   // A relative path must stay relative, so createLane still refuses it.
-  if (!cwd.startsWith("/")) return cwd;
-  const trimmed = cwd.replace(/\/+$/, "");
+  // path.isAbsolute, not a leading "/": a Windows cwd is `D:\…`.
+  if (!path.isAbsolute(cwd)) return cwd;
+  const trimmed = path.resolve(cwd);
   // A path that does not exist yet resolves through its deepest existing
   // ancestor, so /link/new and /real/new still name the same lane.
-  const path = require("node:path");
   const tail = [];
   for (let dir = trimmed; ; dir = path.dirname(dir)) {
     try {
-      return path.join(require("node:fs").realpathSync.native(dir || "/"), ...tail);
+      return path.join(require("node:fs").realpathSync.native(dir), ...tail);
     } catch {
-      if (dir === "/" || !dir) return trimmed;
+      // A root (`/`, `D:\` — a drive that does not exist) is its own dirname.
+      if (path.dirname(dir) === dir) return trimmed;
       tail.unshift(path.basename(dir));
     }
   }
@@ -210,7 +212,7 @@ function createLane({
   tool = "claude",
   router_profile = null,
 } = {}) {
-  if (!cwd || typeof cwd !== "string" || !cwd.startsWith("/")) {
+  if (!cwd || typeof cwd !== "string" || !path.isAbsolute(cwd)) {
     throw Object.assign(new Error("cwd must be an absolute path"), { code: "EBADCWD" });
   }
   validateKind(kind);
@@ -603,12 +605,13 @@ function recoverInterruptedProvisioning() {
  */
 function resolveLaneByCwd(cwd, tool) {
   if (!cwd || typeof cwd !== "string") return null;
-  const target = cwd.replace(/\/+$/, "");
+  // A Windows cwd ends in and nests under `\`.
+  const target = cwd.replace(/[\\/]+$/, "");
   let best = null;
   for (const lane of listLanes()) {
     if (tool && lane.tool !== tool) continue;
-    const base = lane.cwd.replace(/\/+$/, "");
-    if (target === base || target.startsWith(`${base}/`)) {
+    const base = lane.cwd.replace(/[\\/]+$/, "");
+    if (target === base || target.startsWith(`${base}/`) || target.startsWith(base + path.sep)) {
       if (!best || base.length > best.cwd.length) best = lane;
     }
   }