fix: leave published component choices alone when state.json cannot be read

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

@@ -175,6 +175,9 @@ object ComponentsManager {
     }
 
     fun republish(context: Context): Boolean = synchronized(lock) {
+        recoverState(context)
+        val saved = stateFile(context)
+        if (saved.exists() && runCatching { JSONObject(saved.readText()) }.isFailure) return false
         val state = loadState(context)
         val prepared = prepareLaunchState(context, state)
         if ((FileUtils.readString(File(launchDir(context), "desired.tsv")) ?: "") == prepared.text) return false

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

@@ -60,6 +60,19 @@ class ComponentsRepublishTest {
         assertEquals(modified, launchState().lastModified())
     }
 
+    @Test fun anUnreadableStateLeavesThePublishedSelectionsAlone() {
+        proton("DroidDeck-Proton 11-11.7", "DroidDeck-Proton-11-11.7")
+        packageFile()
+        ComponentsManager.setGameComponent(context, scope, "fex", fex)
+        val published = launchState().readText()
+        val state = File(context.filesDir, "components/state.json").apply { writeText("{\"active\": ") }
+        proton("DroidDeck-Proton 11-11.8", "DroidDeck-Proton-11-11.8")
+
+        assertFalse(ComponentsManager.republish(context))
+        assertEquals(published, launchState().readText())
+        assertEquals("{\"active\": ", state.readText())
+    }
+
     @Test fun withNoSelectionsNothingIsPublished() {
         proton("DroidDeck-Proton 11-11.8", "DroidDeck-Proton-11-11.8")