fix: daw_engine khong chay tren Windows - bundle resources sai layout

Spawn.log cho thay: resource_dir()/daw_engine/daw_engine.exe exists=false
tren ca ban cai lan target/release - engine KHONG duoc bundle dung cho.

Goc re (doc source tauri-utils/src/resources.rs + tauri-cli/src/interface/rust.rs):
- bundle.resources dang ARRAY ['resources/daw_engine']: ResourcePaths::new
  (Slice) -> target = resource_relpath(path) GIU TIEN TO 'resources/'
  -> engine nam o /resources/daw_engine/...
- lib.rs cu tim o /daw_engine/... -> exists=false.

Fix:
- tauri.conf.json: resources dang MAP {'resources/daw_engine': 'daw_engine/'}
  -> resources_map -> Walk mode, dest.join(strip_prefix) -> giu nguyen cay
  _internal, dich chuan /daw_engine/ (xac nhan tauri-cli
  BundleResources::Map -> settings.resources_map, dong 1467-1469).
- lib.rs: do them 3 vi tri fallback (legacy resources/ prefix, portable
  exe_dir, dev exe_dir/../resources) + log diagnostic day du vao spawn.log
  (liet ke noi dung resource_dir/exe_dir khi khong tim thay).
- build_windows.ps1: them huong dan xac minh spawn.log sau khi cai dat.

src-tauri/tauri.conf.json

@@ -32,9 +32,9 @@
       "icons/128x128@2x.png",
       "icons/favicon.ico"
     ],
-    "resources": [
-      "resources/daw_engine"
-    ],
+    "resources": {
+      "resources/daw_engine": "daw_engine/"
+    },
     "externalBin": [],
     "windows": {
       "nsis": {