a LOT sync fixes...

src/importer.js

@@ -6,20 +6,38 @@ const { DIRS, resolvePortablePath } = require('./paths')
 const { newGame, newGameId, addGame } = require('./library')
 const { extractIconFromExe } = require('./icons')
 const { listPrefixes, prefixDriveRoot } = require('./prefixes')
+const { rewireSymlinks } = require('./symlinks')
 
 // Directories that typically hold installers/redistributables, not the game.
 const SKIPPED_DIRS = new Set(['redist', 'directx', '_commonredist', 'support', 'dotnet', 'vc'])
 
+// A game folder has to arrive as it was: symlinks are recreated (copyFile
+// silently dropped them, so a linked asset or save folder vanished) and the
+// permission bits are carried over (copyFile writes 0644, killing scripts and
+// anything the game executes itself).
 function copyRecursive(src, dst, onProgress) {
   return fsp.readdir(src, { withFileTypes: true }).then(async entries => {
     await fsp.mkdir(dst, { recursive: true })
     for (const e of entries) {
       const s = path.join(src, e.name)
       const d = path.join(dst, e.name)
-      if (e.isDirectory()) {
+      if (e.isSymbolicLink()) {
+        let target = null
+        try {
+          target = await fsp.readlink(s)
+        } catch {}
+        if (!target) continue
+        try {
+          await fsp.symlink(target, d)
+        } catch {}
+        if (onProgress) onProgress(s)
+      } else if (e.isDirectory()) {
         await copyRecursive(s, d, onProgress)
       } else if (e.isFile()) {
         await fsp.copyFile(s, d)
+        try {
+          await fsp.chmod(d, (await fsp.stat(s)).mode & 0o777)
+        } catch {}
         if (onProgress) onProgress(s)
       }
     }
@@ -47,6 +65,12 @@ async function importGame(srcDir, mode, onProgress) {
     if (mode === 'copy') await copyRecursive(srcDir, dst, onProgress)
     else await moveFolder(srcDir, dst, onProgress)
     workdir = dst
+    // anything the game linked to INSIDE the launcher data (its own folder, an
+    // icon, a shared prefix file) becomes a relative link, so the imported app
+    // survives the launcher being moved - the same healing wine builds get
+    try {
+      await rewireSymlinks(dst, [DIRS.FILES])
+    } catch {}
   }
   const exePath = (await findDefaultExe(workdir)) || preExe
   if (!exePath) {