fix: review fixes for the x86-64 Steam client

- The library cache is saved only by the newest scan, like the list it
  feeds.
- A session records the Steam client it ran (steam-client.txt), and an
  abandoned session's Steam logs are copied from that client.
- Console logs from the same game and mod in two libraries get distinct
  names in the VAC report.
- Client CPU pinning also recognises FEXInterpreter as the launcher.
- pl, ru, uk, cs, bg: the VAC hint names the game as what is protected.

app/src/main/java/com/droiddeck/launcher/MainActivity.kt

@@ -1926,7 +1926,7 @@ class MainActivity : ComponentActivity() {
             val scannedX64 = scannedArch == "x86_64"
             val games = if (ready) Library.launchableGames(this, arch = scannedArch) else emptyList()
             val all = games.distinctBy { it.gameId }
-            if (ready) com.droiddeck.launcher.frontend.LibraryCache.save(this, all, scannedX64)
+            if (ready && scanGeneration == libraryScanGeneration) com.droiddeck.launcher.frontend.LibraryCache.save(this, all, scannedX64)
             val endedSession = SessionState.sessionId.takeIf { !SessionState.running && it != null && it != componentSweepSession }
             if (ready && (!componentSweepDone || endedSession != null)) {
                 componentSweepDone = true

app/src/main/java/com/droiddeck/launcher/session/SessionArtifacts.kt

@@ -188,6 +188,16 @@ object SessionArtifacts {
         return record
     }
 
+    private const val CLIENT_FILE = "steam-client.txt"
+
+    fun recordClient(dir: File, arch: String) {
+        runCatching { File(dir, CLIENT_FILE).writeText("$arch\n") }
+    }
+
+    /** The Steam client a session ran, when it recorded one. */
+    internal fun recordedClient(dir: File): String? =
+        runCatching { File(dir, CLIENT_FILE).readText().trim() }.getOrNull()?.takeIf { it == "arm64" || it == "x86_64" }
+
     private fun copySteamLogs(context: Context, dir: File, record: Record, steamArch: String? = null) {
         val logs = File(steamArch?.let { SessionPrefs.steamRoot(context, it) } ?: SessionPrefs.activeSteamRoot(context), "logs")
         if (!logs.isDirectory) return
@@ -231,7 +241,7 @@ object SessionArtifacts {
                 )
                 val record = Record(dir)
                 if (newest) {
-                    copySteamLogs(context, dir, record)
+                    copySteamLogs(context, dir, record, recordedClient(dir))
                     VacDiagnostics.collect(context, dir)
                 }
                 SessionLogCapture.dumpCrashBuffer(File(dir, "crash.log"))

app/src/main/java/com/droiddeck/launcher/session/SessionService.kt

@@ -587,7 +587,10 @@ class SessionService : Service() {
         guest.add("GLIBC_TUNABLES=glibc.pthread.rseq=0:glibc.malloc.top_pad=16777216")
         if (SessionState.mode == MODE_STEAM) guest.add("BL_MANGOAPP=" + (if (SessionPrefs.mangoapp(this)) "1" else "0"))
         SessionState.steamClientArch = if (steamHere) SessionPrefs.steamClientArch(this) else null
-        SessionState.steamClientArch?.let { guest.add("BL_STEAM_CLIENT_ARCH=$it") }
+        SessionState.steamClientArch?.let { arch ->
+            guest.add("BL_STEAM_CLIENT_ARCH=$arch")
+            SessionPaths.current()?.let { SessionArtifacts.recordClient(it, arch) }
+        }
         if (SessionState.mode == MODE_STEAM) {
             guest.add("BL_GAMESCOPE_STRETCH_16X9=" + (if (SessionPrefs.stretch16x9(this)) "1" else "0"))
         }

app/src/main/java/com/droiddeck/launcher/session/VacDiagnostics.kt

@@ -103,8 +103,9 @@ object VacDiagnostics {
                 report.appendLine("  No console.log was written this session. Only Source-engine games write one,")
                 report.appendLine("  and only when started with -condebug (this setting adds it).")
             }
-            consoles.forEach { log ->
+            val names = consoleNames(consoles)
-                val name = consoleName(log)
+            consoles.forEachIndexed { i, log ->
+                val name = names[i]
                 val lines = tail(log, armedSizes[canonical(log)] ?: 0L)
                 File(out, "$name-console.log").bufferedWriter().use { w ->
                     lines.forEach { w.write(LogRedactor.redact(it)); w.newLine() }
@@ -173,6 +174,15 @@ object VacDiagnostics {
         return roots.filter { it.isDirectory }.distinctBy { runCatching { it.canonicalPath }.getOrDefault(it.path) }
     }
 
+    /** Two libraries can hold the same game and mod folder; a repeated name takes a tag from the log's path. */
+    internal fun consoleNames(logs: List<File>): List<String> {
+        val used = HashSet<String>()
+        return logs.map { log ->
+            val base = consoleName(log)
+            if (used.add(base)) base else "$base-%08x".format(canonical(log).hashCode()).also { used.add(it) }
+        }
+    }
+
     private fun consoleName(log: File): String {
         val mod = log.parentFile
         val game = mod?.parentFile?.let { if (it.name == "game") it.parentFile else it }

app/src/main/res/values-bg/strings.xml

@@ -2341,7 +2341,7 @@
     <string name="mode_client_arch_arm64">ARM64</string>
     <string name="mode_client_arch_x64">x86-64</string>
     <string name="setup_vac_diag">Диагностика на VAC</string>
-    <string name="setup_vac_diag_hint">Игрите на Source записват конзолата си (-condebug); vac.txt в дневниците на сесията показва дали е защитено или не</string>
+    <string name="setup_vac_diag_hint">Игрите на Source записват конзолата си (-condebug); vac.txt в дневниците на сесията показва дали играта е защитена от VAC</string>
     <string name="load_starting_steam_x64">Стартиране на Steam x86-64</string>
     <string name="storage_game_x64">%1$s · x86-64</string>
     <string name="storage_tool_x64_client">Използва се от клиента на Steam x86-64</string>

app/src/main/res/values-cs/strings.xml

@@ -2391,7 +2391,7 @@
     <string name="mode_client_arch_arm64">ARM64</string>
     <string name="mode_client_arch_x64">x86-64</string>
     <string name="setup_vac_diag">Diagnostika VAC</string>
-    <string name="setup_vac_diag_hint">Hry na Source zaznamenávají svou konzoli (-condebug); vac.txt v protokolech relace uvádí, zda je zabezpečeno, nebo ne</string>
+    <string name="setup_vac_diag_hint">Hry na Source zaznamenávají svou konzoli (-condebug); vac.txt v protokolech relace uvádí, zda je hra chráněna VAC</string>
     <string name="load_starting_steam_x64">Spouštění Steamu x86-64</string>
     <string name="storage_game_x64">%1$s · x86-64</string>
     <string name="storage_tool_x64_client">Používá klient Steam x86-64</string>

app/src/main/res/values-pl/strings.xml

@@ -2391,7 +2391,7 @@
     <string name="mode_client_arch_arm64">ARM64</string>
     <string name="mode_client_arch_x64">x86-64</string>
     <string name="setup_vac_diag">Diagnostyka VAC</string>
-    <string name="setup_vac_diag_hint">Gry na Source zapisują swoją konsolę (-condebug); vac.txt w logach sesji pokazuje, czy jest zabezpieczone</string>
+    <string name="setup_vac_diag_hint">Gry na Source zapisują swoją konsolę (-condebug); vac.txt w logach sesji pokazuje, czy gra jest chroniona przez VAC</string>
     <string name="load_starting_steam_x64">Uruchamianie Steam x86-64</string>
     <string name="storage_game_x64">%1$s · x86-64</string>
     <string name="storage_tool_x64_client">Używane przez klienta Steam x86-64</string>

app/src/main/res/values-ru/strings.xml

@@ -2385,7 +2385,7 @@
     <string name="mode_client_arch_arm64">ARM64</string>
     <string name="mode_client_arch_x64">x86-64</string>
     <string name="setup_vac_diag">Диагностика VAC</string>
-    <string name="setup_vac_diag_hint">Игры на Source записывают консоль (-condebug); vac.txt в журналах сессии показывает, защищено или нет</string>
+    <string name="setup_vac_diag_hint">Игры на Source записывают консоль (-condebug); vac.txt в журналах сессии показывает, защищена ли игра VAC</string>
     <string name="load_starting_steam_x64">Запуск Steam x86-64</string>
     <string name="storage_game_x64">%1$s · x86-64</string>
     <string name="storage_tool_x64_client">Используется клиентом Steam x86-64</string>

app/src/main/res/values-uk/strings.xml

@@ -2391,7 +2391,7 @@
     <string name="mode_client_arch_arm64">ARM64</string>
     <string name="mode_client_arch_x64">x86-64</string>
     <string name="setup_vac_diag">Діагностика VAC</string>
-    <string name="setup_vac_diag_hint">Ігри на Source записують свою консоль (-condebug); vac.txt у журналах сеансу показує, захищено чи ні</string>
+    <string name="setup_vac_diag_hint">Ігри на Source записують свою консоль (-condebug); vac.txt у журналах сеансу показує, чи захищена гра VAC</string>
     <string name="load_starting_steam_x64">Запуск Steam x86-64</string>
     <string name="storage_game_x64">%1$s · x86-64</string>
     <string name="storage_tool_x64_client">Використовується клієнтом Steam x86-64</string>

app/src/test/java/com/droiddeck/launcher/session/SessionClientRecordTest.kt

@@ -0,0 +1,20 @@
+package com.droiddeck.launcher.session
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.TemporaryFolder
+
+class SessionClientRecordTest {
+    @get:Rule val tmp = TemporaryFolder()
+
+    @Test fun aSessionFolderKeepsTheClientItRan() {
+        val dir = tmp.newFolder("2026-10-18-01-steam")
+        assertNull(SessionArtifacts.recordedClient(dir))
+        SessionArtifacts.recordClient(dir, "x86_64")
+        assertEquals("x86_64", SessionArtifacts.recordedClient(dir))
+        java.io.File(dir, "steam-client.txt").writeText("something else\n")
+        assertNull(SessionArtifacts.recordedClient(dir))
+    }
+}

app/src/test/java/com/droiddeck/launcher/session/VacDiagnosticsTest.kt

@@ -18,6 +18,17 @@ class VacDiagnosticsTest {
         }
     }
 
+    @Test fun theSameGameInTwoLibrariesGetsTwoConsoleNames() {
+        val a = java.io.File("/lib1/steamapps/common/Team Fortress 2/tf/console.log")
+        val b = java.io.File("/lib2/steamapps/common/Team Fortress 2/tf/console.log")
+        val c = java.io.File("/lib1/steamapps/common/Half-Life 2/hl2/console.log")
+        val names = VacDiagnostics.consoleNames(listOf(a, b, c))
+        assertEquals("Team Fortress 2-tf", names[0])
+        assertTrue(names[1].startsWith("Team Fortress 2-tf-") && names[1] != names[0])
+        assertEquals("Half-Life 2-hl2", names[2])
+        assertEquals(names, VacDiagnostics.consoleNames(listOf(a, b, c)))
+    }
+
     @Test fun tailReadsAllOfAReplacedFile() {
         val log = java.io.File.createTempFile("console", ".log")
         try {

tools/linuxfs/overlay/usr/local/bin/droiddeck-session

@@ -1032,7 +1032,7 @@ BUSCONF
         if [ "$beat" -le 720 ] && [ -n "${BL_CLIENT_CPUS:-}" ]; then
           for _d in /proc/[0-9]*; do
             { IFS= read -r -d '' _c && { IFS= read -r -d '' _c1 || _c1=; }; } < "$_d/cmdline" 2>/dev/null || continue
-            case $_c in FEX|*/FEX) _c=$_c1 ;; esac
+            case $_c in FEX|*/FEX|FEXInterpreter|*/FEXInterpreter) _c=$_c1 ;; esac
             case $_c in *steamwebhelper*|*steamrtarm64/steam|*steamrt64/steam|*gamescope*) ;; *) continue ;; esac
             _t=("$_d"/task/*)
             _p=${_d#/proc/}

tools/linuxfs/overlay/usr/local/bin/droiddeck-steam-x64

@@ -950,7 +950,7 @@ fi
 if [ -n "${BL_CLIENT_CPUS:-}" ] && command -v taskset >/dev/null 2>&1; then
   (
     while sleep 5; do
-      for pid in $(ps -A -o PID,ARGS | awk '($2 == "FEX" || $2 ~ /\/FEX$/) && ($3 ~ /steamrt64\/steam$/ || $3 ~ /steamwebhelper$/) {print $1} $2 ~ /steamrtarm64\/steamwebhelper$/ {print $1}'); do
+      for pid in $(ps -A -o PID,ARGS | awk '($2 ~ /^(.*\/)?FEX(Interpreter)?$/) && ($3 ~ /steamrt64\/steam$/ || $3 ~ /steamwebhelper$/) {print $1} $2 ~ /steamrtarm64\/steamwebhelper$/ {print $1}'); do
         taskset -a -p -c "$BL_CLIENT_CPUS" "$pid" >/dev/null 2>&1
       done
     done