fix(todo): normalize continuation agent names

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

@@ -45,4 +45,38 @@ describe("injectContinuation agent names", () => {
     // then
     expect(capturedAgent).toBe("Hephaestus - Deep Agent")
   })
+
+  test("#given resolved agent is an invisible-prefixed config key #when continuation is injected #then promptAsync receives the display name", async () => {
+    // given
+    let capturedAgent: string | undefined
+    const ctx = unsafeTestValue<Parameters<typeof injectContinuation>[0]["ctx"]>({
+      directory: "/tmp/test",
+      client: {
+        session: {
+          todo: async () => ({ data: [{ id: "1", content: "todo", status: "pending", priority: "high" }] }),
+          promptAsync: async (input: { body: { agent?: string } }) => {
+            capturedAgent = input.body.agent
+            return {}
+          },
+        },
+      },
+    })
+    const sessionStateStore = unsafeTestValue<Parameters<typeof injectContinuation>[0]["sessionStateStore"]>({
+      getExistingState: () => ({ inFlight: false, lastInjectedAt: 0, consecutiveFailures: 0 }),
+    })
+
+    // when
+    await injectContinuation({
+      ctx,
+      sessionID: "ses_invisible_lowercase_builtin_agent",
+      resolvedInfo: {
+        agent: "\u200Bhephaestus",
+        model: { providerID: "openai", modelID: "gpt-5.5" },
+      },
+      sessionStateStore,
+    })
+
+    // then
+    expect(capturedAgent).toBe("Hephaestus - Deep Agent")
+  })
 })

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

@@ -20,7 +20,7 @@ import { log } from "../../shared/logger"
 import { isSqliteBackend } from "../../shared/opencode-storage-detection"
 import {
   getAgentConfigKey,
-  normalizeAgentForPromptKey,
+  normalizeAgentForPrompt,
   stripAgentListSortPrefix,
 } from "../../shared/agent-display-names"
 import { dispatchInternalPrompt, isInternalPromptDispatchAccepted } from "../shared/prompt-async-gate"
@@ -132,7 +132,11 @@ export async function injectContinuation(args: {
     tools = tools ?? previousMessage?.tools
   }
 
-  const promptAgent = resolveRegisteredAgentName(agentName) ?? normalizeAgentForPromptKey(agentName)
+  const agentConfigKey = getAgentConfigKey(agentName ?? "")
+  const registeredAgentName = resolveRegisteredAgentName(agentName)
+  const promptAgent = registeredAgentName !== undefined && registeredAgentName !== agentConfigKey
+    ? registeredAgentName
+    : normalizeAgentForPrompt(agentName)
   const launchAgent = promptAgent ? stripAgentListSortPrefix(promptAgent).trim() || undefined : undefined
 
   if (promptAgent && skipAgents.some(s => getAgentConfigKey(s) === getAgentConfigKey(promptAgent))) {