detect: filter out launcher tools and non-game exes from game scan

src/detect.rs

@@ -51,6 +51,62 @@ const SYSTEM_DIRS: &[&str] = &[
     "windowsapps",
 ];
 
+/// Directory names that contain launcher infrastructure, not games.
+const SKIP_DIRS: &[&str] = &[
+    "battle.net",
+    "electronic arts",
+    "ea desktop",
+    "epic games",
+    "gog galaxy",
+    "ubisoft",
+    "rockstar games",
+    "wine",
+    "mono",
+    "gecko",
+];
+
+/// Exe filename patterns that are launcher tools, not games.
+const SKIP_EXES: &[&str] = &[
+    "uninstall",
+    "uninst",
+    "crash",
+    "reporter",
+    "update",
+    "updater",
+    "setup",
+    "installer",
+    "helper",
+    "agent",
+    "service",
+    "redist",
+    "vcredist",
+    "dxsetup",
+    "dxwebsetup",
+    "dotnetfx",
+    "vc_redist",
+    "bootstrapper",
+    "launcher", // launcher tools, not games
+    "battlenet",
+    "eadesktop",
+    "eabackgroundservice",
+    "ealink",
+    "epicgameslauncher",
+    "epicwebhelper",
+    "ubisoftconnect",
+    "ubisoftgamelauncher",
+    "upc",
+    "galaxyclient",
+    "galaxycommunication",
+    "galaxypeer",
+    "socialclubhelper",
+    "subprocess",
+    "cefprocess",
+    "webhelper",
+    "webview",
+    "7za",
+    "aria2c",
+];
+
 /// Scan a launcher's Wine prefix for installed game executables.
 /// Returns (display_name, path_relative_to_drive_c) pairs, sorted alphabetically,
 /// excluding the launcher's own exe and any already-configured games.
@@ -102,6 +158,9 @@ fn scan_exe_dir(
         if SYSTEM_DIRS.iter().any(|s| lower.starts_with(s)) {
             continue;
         }
+        if SKIP_DIRS.iter().any(|s| lower == *s) {
+            continue;
+        }
         if path.is_dir() {
             scan_exe_dir(&path, drive_c, launcher_exe, already, out, seen, depth + 1);
         } else if path
@@ -116,6 +175,15 @@ fn scan_exe_dir(
             if rel_lower == launcher_exe || already.contains(&rel_lower) {
                 continue;
             }
+            // Skip launcher tools, updaters, and non-game executables
+            let stem_lower = path
+                .file_stem()
+                .and_then(|s| s.to_str())
+                .unwrap_or("")
+                .to_lowercase();
+            if SKIP_EXES.iter().any(|s| stem_lower.contains(s)) {
+                continue;
+            }
             if !seen.insert(rel_lower) {
                 continue;
             }