refactor(session): effectify SessionPrompt service (#19483)

packages/opencode/src/session/summary.ts

@@ -3,7 +3,6 @@ import z from "zod"
 import { Session } from "."
 
 import { MessageV2 } from "./message-v2"
-import { Identifier } from "@/id/id"
 import { SessionID, MessageID } from "./schema"
 import { Snapshot } from "@/snapshot"
 
@@ -110,8 +109,8 @@ export namespace SessionSummary {
       (m) => m.info.id === input.messageID || (m.info.role === "assistant" && m.info.parentID === input.messageID),
     )
     const msgWithParts = messages.find((m) => m.info.id === input.messageID)
-    if (!msgWithParts) return
-    const userMsg = msgWithParts.info as MessageV2.User
+    if (!msgWithParts || msgWithParts.info.role !== "user") return
+    const userMsg = msgWithParts.info
     const diffs = await computeDiff({ messages })
     userMsg.summary = {
       ...userMsg.summary,