fixes:

- make prefix imported games paths relative to prefix
- show placeholder icon as fallback
- fix crossed working/exe directories
- fix broken working dir in prefix imported games

src/importer.js

@@ -5,7 +5,7 @@ const path = require('path')
 const { DIRS, resolvePortablePath } = require('./paths')
 const { newGame, newGameId, addGame } = require('./library')
 const { extractIconFromExe } = require('./icons')
-const { prefixPath } = require('./prefixes')
+const { listPrefixes, prefixDriveRoot } = require('./prefixes')
 
 // Directories that typically hold installers/redistributables, not the game.
 const SKIPPED_DIRS = new Set(['redist', 'directx', '_commonredist', 'support', 'dotnet', 'vc'])
@@ -68,12 +68,11 @@ async function importGame(srcDir, mode, onProgress) {
 // prefix, so wine sees the app exactly as if it had been installed
 // normally into C:\...
 async function importGameFromPrefix(prefix, srcDir, onProgress) {
-  const prefixes = require('./prefixes')
-  if (!prefixes.listPrefixes().prefixes.some(p => p.name === prefix)) return { ok: false, error: 'prefix-not-found' }
+  if (!listPrefixes().prefixes.some(p => p.name === prefix)) return { ok: false, error: 'prefix-not-found' }
   // the folder must live inside the prefix's C: drive so the C:\ mapping
   // holds - drive_c sits at the prefix top for plain wine, under pfx/ for
   // Proton-managed prefixes
-  const driveRoot = prefixes.prefixDriveRoot(prefix)
+  const driveRoot = prefixDriveRoot(prefix)
   if (!driveRoot) return { ok: false, error: 'no-drive-c' }
   const rel = path.relative(driveRoot, srcDir)
   if (!rel || rel.startsWith('..') || path.isAbsolute(rel)) return { ok: false, error: 'outside-drive-c' }