improvemets & fixes:

- added 'open with' handling to desktop shortcuts
- move logs button to app configuration
- fix sync progress disappearing after long hashing
- fix sync double file counter
- merge wine and proton prefix folders via symlink

src/argv.js

@@ -1,14 +1,18 @@
 'use strict'
 
+const path = require('path')
+const fs = require('fs')
+
 // Shared command-line parsing for the launcher process itself. Both boot
 // (process.argv) and the single-instance handoff (second-instance argv) use
 // it, so a shortcut, a "Open with PLWL" file-open and Chromium's own injected
 // flags are handled the same way everywhere.
 //
 // Supported forms:
-//   --launch <id> | --launch=<id>   auto-start that library app
-//   --open <path> | --open=<path>   open an .exe with the wine picker
-//   a bare existing-file path       same as --open (plumbing for Exec %f)
+//   --launch <id> | --launch=<id>      auto-start that library app
+//   --file <path>                      hand this file to the --launch app
+//   --open <path> | --open=<path>      open an .exe with the wine picker
+//   a bare existing-file path          same as --open (plumbing for Exec %f)
 
 function firstNonFlagAfter(args, i) {
   // Chromium injects its own flags into the second instance's argv and they
@@ -34,9 +38,32 @@ function findValue(args, names) {
 // PLWL's own options must not swallow Chromium's flags (--flag=... style),
 // so anything after a flag that itself carries a value is skipped here by
 // looking only at the KNOWN option names above.
+// The file an app shortcut was asked to open: `--file <path>` when the
+// generated shortcut passes it explicitly, or the path a file manager appends
+// on its own to an Exec line without a file field (KDE does that). Only an
+// existing absolute FILE counts in the fallback, so Chromium's injected flags
+// and the launcher's own path can never be mistaken for the opened document.
+const FIELD_CODE_RE = /^%[fFuUdDnNickvm]?$/
+function launchFileOf(args, launchId) {
+  const explicit = findValue(args, ['--file'])
+  // a desktop environment that does not expand field codes would hand over
+  // the literal token - never treat that as a file path
+  if (explicit && !FIELD_CODE_RE.test(explicit)) return explicit
+  if (!launchId) return null
+  for (let i = args.length - 1; i > 1; i--) {
+    const arg = args[i]
+    if (typeof arg !== 'string' || arg.startsWith('-') || !path.isAbsolute(arg)) continue
+    try {
+      if (fs.statSync(arg).isFile()) return arg
+    } catch {}
+  }
+  return null
+}
+
 function parseArgv(argv) {
   const args = Array.isArray(argv) ? argv : process.argv
   const launchId = findValue(args, ['--launch'])
+  const launchFile = launchFileOf(args, launchId)
   let openPath = findValue(args, ['--open'])
   if (!openPath && !launchId) {
     // "Open with" plumbing (Exec %f): the file path arrives as the only
@@ -51,7 +78,7 @@ function parseArgv(argv) {
     )
     if (bare) openPath = bare
   }
-  return { launchId, openPath }
+  return { launchId, openPath, launchFile }
 }
 
 module.exports = { parseArgv, findValue }