fix(todo-continuation-enforcer): preserve model/provider from nearest message

When injecting continuation prompts, extract and pass the model field

(providerID + modelID) from the nearest stored message, matching the

pattern used in background-agent/manager.ts and session-recovery.

Also updated tests to capture the model field for verification.

src/hooks/todo-continuation-enforcer.ts

@@ -1,12 +1,12 @@
+import type { PluginInput } from "@opencode-ai/plugin"
 import { existsSync, readdirSync } from "node:fs"
 import { join } from "node:path"
-import type { PluginInput } from "@opencode-ai/plugin"
+import type { BackgroundManager } from "../features/background-agent"
 import { getMainSessionID, subagentSessions } from "../features/claude-code-session-state"
 import {
-  findNearestMessageWithFields,
-  MESSAGE_STORAGE,
+    findNearestMessageWithFields,
+    MESSAGE_STORAGE,
 } from "../features/hook-message-injector"
-import type { BackgroundManager } from "../features/background-agent"
 import { log } from "../shared/logger"
 
 const HOOK_NAME = "todo-continuation-enforcer"
@@ -62,22 +62,22 @@ function getMessageDir(sessionID: string): string | null {
 
 function isAbortError(error: unknown): boolean {
   if (!error) return false
-  
+
   if (typeof error === "object") {
     const errObj = error as Record<string, unknown>
     const name = errObj.name as string | undefined
     const message = (errObj.message as string | undefined)?.toLowerCase() ?? ""
-    
+
     if (name === "MessageAbortedError" || name === "AbortError") return true
     if (name === "DOMException" && message.includes("abort")) return true
     if (message.includes("aborted") || message.includes("cancelled") || message.includes("interrupted")) return true
   }
-  
+
   if (typeof error === "string") {
     const lower = error.toLowerCase()
     return lower.includes("abort") || lower.includes("cancel") || lower.includes("interrupt")
   }
-  
+
   return false
 }
 
@@ -104,7 +104,7 @@ export function createTodoContinuationEnforcer(
   function cancelCountdown(sessionID: string): void {
     const state = sessions.get(sessionID)
     if (!state) return
-    
+
     if (state.countdownTimer) {
       clearTimeout(state.countdownTimer)
       state.countdownTimer = undefined
@@ -148,7 +148,7 @@ export function createTodoContinuationEnforcer(
 
   async function injectContinuation(sessionID: string, incompleteCount: number, total: number): Promise<void> {
     const state = sessions.get(sessionID)
-    
+
     if (state?.isRecovering) {
       log(`[${HOOK_NAME}] Skipped injection: in recovery`, { sessionID })
       return
@@ -183,9 +183,9 @@ export function createTodoContinuationEnforcer(
     const messageDir = getMessageDir(sessionID)
     const prevMessage = messageDir ? findNearestMessageWithFields(messageDir) : null
 
-    const hasWritePermission = !prevMessage?.tools || 
+    const hasWritePermission = !prevMessage?.tools ||
       (prevMessage.tools.write !== false && prevMessage.tools.edit !== false)
-    
+
     if (!hasWritePermission) {
       log(`[${HOOK_NAME}] Skipped: agent lacks write permission`, { sessionID, agent: prevMessage?.agent })
       return
@@ -199,18 +199,23 @@ export function createTodoContinuationEnforcer(
 
     const prompt = `${CONTINUATION_PROMPT}\n\n[Status: ${todos.length - freshIncompleteCount}/${todos.length} completed, ${freshIncompleteCount} remaining]`
 
+    const modelField = prevMessage?.model?.providerID && prevMessage?.model?.modelID
+      ? { providerID: prevMessage.model.providerID, modelID: prevMessage.model.modelID }
+      : undefined
+
     try {
-      log(`[${HOOK_NAME}] Injecting continuation`, { sessionID, agent: prevMessage?.agent, incompleteCount: freshIncompleteCount })
-      
+      log(`[${HOOK_NAME}] Injecting continuation`, { sessionID, agent: prevMessage?.agent, model: modelField, incompleteCount: freshIncompleteCount })
+
       await ctx.client.session.prompt({
         path: { id: sessionID },
         body: {
           agent: prevMessage?.agent,
+          model: modelField,
           parts: [{ type: "text", text: prompt }],
         },
         query: { directory: ctx.directory },
       })
-      
+
       log(`[${HOOK_NAME}] Injection successful`, { sessionID })
     } catch (err) {
       log(`[${HOOK_NAME}] Injection failed`, { sessionID, error: String(err) })
@@ -250,7 +255,7 @@ export function createTodoContinuationEnforcer(
       const isAbort = isAbortError(props?.error)
       state.lastEventWasAbortError = isAbort
       cancelCountdown(sessionID)
-      
+
       log(`[${HOOK_NAME}] session.error`, { sessionID, isAbort })
       return
     }
@@ -264,7 +269,7 @@ export function createTodoContinuationEnforcer(
       const mainSessionID = getMainSessionID()
       const isMainSession = sessionID === mainSessionID
       const isBackgroundTaskSession = subagentSessions.has(sessionID)
-      
+
       if (mainSessionID && !isMainSession && !isBackgroundTaskSession) {
         log(`[${HOOK_NAME}] Skipped: not main or background task session`, { sessionID })
         return