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.

build_windows.ps1

@@ -87,3 +87,9 @@ Write-Host ""
 Write-Host "== DONE =="
 Write-Host "  NSIS: src-tauri\target\release\bundle\nsis\SonicForgeDAW_1.0.0_x64-setup.exe"
 Write-Host "  MSI : src-tauri\target\release\bundle\msi\SonicForgeDAW_1.0.0_x64_en-US.msi"
+Write-Host ""
+Write-Host "== XAC MINH SAU KHI CAI DAT (quan trong) =="
+Write-Host "  Mo %APPDATA%\SonicForgeDAW\logs\spawn.log - phai thay:"
+Write-Host "    [resource_dir/daw_engine (map layout)] ...exists=True"
+Write-Host "  Neu exists=False: bundle resources KHONG vao installer (chay lai buoc [4/6])."
+Write-Host "  Engine phai nam o: <thu muc cai dat>\daw_engine\daw_engine.exe"