test(prefs): account for the Community List fragments slot

The new kind-33302 backup slot never existed in the legacy SharedPreferences
file, so it stays out of the one-shot migration table.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PmuzkD5qdqgv6dMeRMoC5N

commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/model/preferences/LatestEventCacheStore.kt

@@ -41,6 +41,8 @@ import okio.IOException
  */
 enum class LatestEventSlot(
     val prefKey: String,
+    /** False for a slot added after the SharedPreferences era: there is nothing to migrate. */
+    val existedInLegacyPrefs: Boolean = true,
 ) {
     CONTACT_LIST("latestContactList"),
     USER_METADATA("latestUserMetadata"),
@@ -63,7 +65,7 @@ enum class LatestEventSlot(
     CONCORD_LIST("latestConcordList"),
 
     /** The kind-33302 Community List fragments (CORD-02 §8), one event JSON per line. */
-    CONCORD_LIST_FRAGMENTS("latestConcordListFragments"),
+    CONCORD_LIST_FRAGMENTS("latestConcordListFragments", existedInLegacyPrefs = false),
     TRUST_PROVIDER_LIST("latestTrustProviderList"),
     KEY_PACKAGE_RELAY_LIST("latestKeyPackageRelayList"),
     FAVORITE_ALGO_FEEDS_LIST("latestFavoriteAlgoFeedsList"),
@@ -97,7 +99,7 @@ class LatestEventCacheStore(
         val legacyTable =
             LegacyKeyTable(
                 "migrated.latestEvents",
-                LatestEventSlot.entries.map { LegacyStringKey(it.prefKey, it.key) },
+                LatestEventSlot.entries.filter { it.existedInLegacyPrefs }.map { LegacyStringKey(it.prefKey, it.key) },
             )
     }
 

commons/src/jvmTest/kotlin/com/vitorpamplona/amethyst/commons/model/preferences/LatestEventCacheStoreTest.kt

@@ -107,10 +107,11 @@ class LatestEventCacheStoreTest {
         assertEquals("latestUserMetadata", LatestEventSlot.USER_METADATA.prefKey)
         assertEquals("latestContactList", LatestEventSlot.CONTACT_LIST.prefKey)
         assertEquals("latestNIP65RelayList", LatestEventSlot.NIP65_RELAY_LIST.prefKey)
-        assertEquals(26, LatestEventSlot.entries.size)
+        assertEquals("latestConcordListFragments", LatestEventSlot.CONCORD_LIST_FRAGMENTS.prefKey)
+        assertEquals(27, LatestEventSlot.entries.size)
         assertEquals(
             "prefKeys must be unique",
-            26,
+            27,
             LatestEventSlot.entries
                 .map { it.prefKey }
                 .toSet()

commons/src/jvmTest/kotlin/com/vitorpamplona/amethyst/commons/model/preferences/LegacyKeyTableTest.kt

@@ -209,7 +209,7 @@ class LegacyKeyTableTest {
         )
 
         assertEquals(FollowListSlot.entries.size, TopNavFollowListStore.legacyTable.keys.size)
-        assertEquals(LatestEventSlot.entries.size, LatestEventCacheStore.legacyTable.keys.size)
+        assertEquals(LatestEventSlot.entries.count { it.existedInLegacyPrefs }, LatestEventCacheStore.legacyTable.keys.size)
     }
 
     /** Several tables share one store, so their markers must not collide. */