fix(start-work): reuse registered opencode agent names

src/hooks/todo-continuation-enforcer/continuation-injection.test.ts

@@ -5,7 +5,7 @@ import { injectContinuation } from "./continuation-injection"
 import { OMO_INTERNAL_INITIATOR_MARKER } from "../../shared/internal-initiator-marker"
 
 describe("injectContinuation", () => {
-  test("normalizes built-in display names to config keys before promptAsync", async () => {
+  test("preserves the registered built-in agent name before promptAsync", async () => {
     // given
     let capturedAgent: string | undefined
     const ctx = {
@@ -40,7 +40,7 @@ describe("injectContinuation", () => {
     })
 
     // then
-    expect(capturedAgent).toBe("sisyphus")
+    expect(capturedAgent).toBe("Sisyphus - Ultraworker")
   })
 
   test("inherits tools from resolved message info when reinjecting", async () => {

src/hooks/todo-continuation-enforcer/continuation-injection.ts

@@ -1,7 +1,10 @@
 import type { PluginInput } from "@opencode-ai/plugin"
 
 import type { BackgroundManager } from "../../features/background-agent"
-import { getSessionAgent } from "../../features/claude-code-session-state"
+import {
+  getSessionAgent,
+  resolveRegisteredAgentName,
+} from "../../features/claude-code-session-state"
 import {
   createInternalAgentTextPart,
   normalizeSDKResponse,
@@ -127,6 +130,7 @@ export async function injectContinuation(args: {
   }
 
   const promptAgent = normalizeAgentForPromptKey(agentName)
+  const launchAgent = resolveRegisteredAgentName(agentName)
 
   if (promptAgent && skipAgents.some(s => getAgentConfigKey(s) === getAgentConfigKey(promptAgent))) {
     log(`[${HOOK_NAME}] Skipped: agent in skipAgents list`, { sessionID, agent: agentName })
@@ -168,7 +172,7 @@ ${todoList}`
   try {
     log(`[${HOOK_NAME}] Injecting continuation`, {
       sessionID,
-      agent: promptAgent,
+      agent: launchAgent ?? promptAgent,
       model,
       incompleteCount: freshIncompleteCount,
     })
@@ -183,7 +187,7 @@ ${todoList}`
     await ctx.client.session.promptAsync({
       path: { id: sessionID },
       body: {
-        agent: promptAgent,
+        agent: launchAgent ?? promptAgent,
         ...(launchModel ? { model: launchModel } : {}),
         ...(launchVariant ? { variant: launchVariant } : {}),
         ...(inheritedTools ? { tools: inheritedTools } : {}),