fix(chat): keep historical cache out of the live transcript tail (#1253)

app/src/main/java/com/m57/hermescontrol/data/local/ChatMessageEntity.kt

@@ -54,6 +54,8 @@ data class ChatMessageEntity(
     val sortGroup: Int = 1,
     @ColumnInfo(name = "sort_order", defaultValue = "0")
     val sortOrder: Long = 0,
+    @ColumnInfo(name = "message_provenance", defaultValue = "'UNKNOWN'")
+    val messageProvenance: String = "UNKNOWN",
 )
 
 internal fun ChatMessageEntity.isSessionStartMarker(): Boolean =

app/src/main/java/com/m57/hermescontrol/data/local/ChatMessageMapper.kt

@@ -1,6 +1,7 @@
 package com.m57.hermescontrol.data.local
 
 import com.m57.hermescontrol.ui.chat.ChatMessage
+import com.m57.hermescontrol.ui.chat.MessageProvenance
 import com.m57.hermescontrol.ui.chat.MessageRole
 import com.m57.hermescontrol.ui.chat.ToolStatus
 
@@ -40,6 +41,9 @@ fun ChatMessageEntity.toUiModel(): ChatMessage =
         completionId = completionId,
         restId = restId,
         localOrder = sortOrder.takeIf { sortGroup == 1 && it > 0 && !isSessionStartMarker() },
+        messageProvenance =
+            MessageProvenance.entries.firstOrNull { it.name == messageProvenance }
+                ?: MessageProvenance.UNKNOWN,
     )
 
 fun ChatMessage.toEntity(sessionId: String): ChatMessageEntity =
@@ -59,4 +63,5 @@ fun ChatMessage.toEntity(sessionId: String): ChatMessageEntity =
         tps = tps,
         completionId = completionId,
         restId = restId,
+        messageProvenance = messageProvenance.name,
     )

app/src/main/java/com/m57/hermescontrol/data/local/HermesDatabase.kt

@@ -14,7 +14,7 @@ import java.io.File
 
 @Database(
     entities = [ChatMessageEntity::class],
-    version = 9,
+    version = 10,
     exportSchema = true,
 )
 abstract class HermesDatabase : RoomDatabase() {
@@ -115,6 +115,17 @@ abstract class HermesDatabase : RoomDatabase() {
                 }
             }
 
+        val MIGRATION_9_10: Migration =
+            object : Migration(9, 10) {
+                override suspend fun migrate(connection: SQLiteConnection) {
+                    // v9 cannot prove whether a UUID-only row reached the server. Preserve that
+                    // ambiguity; only new outgoing prompts record LOCAL_PENDING before submit.
+                    connection.execSQL(
+                        "ALTER TABLE chat_messages ADD COLUMN message_provenance TEXT NOT NULL DEFAULT 'UNKNOWN'",
+                    )
+                }
+            }
+
         suspend fun get(context: Context): HermesDatabase =
             withContext(Dispatchers.IO) {
                 instance?.let { return@withContext it }
@@ -152,6 +163,7 @@ abstract class HermesDatabase : RoomDatabase() {
                             MIGRATION_6_7,
                             MIGRATION_7_8,
                             MIGRATION_8_9,
+                            MIGRATION_9_10,
                         ).fallbackToDestructiveMigration(false)
                         .build()
                         .also { instance = it }