feat(delegate-task): preserve raw subagent_type across metadata

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/delegate-task/background-continuation.ts

@@ -37,6 +37,7 @@ export async function executeBackgroundContinuation(
         prompt: args.prompt,
         agent: task.agent,
         ...(task.category !== undefined ? { category: task.category } : {}),
+        ...(args.requested_subagent_type !== undefined ? { requested_subagent_type: args.requested_subagent_type } : {}),
         load_skills: args.load_skills,
         description: args.description,
         run_in_background: args.run_in_background,

src/tools/delegate-task/background-task.ts

@@ -125,6 +125,7 @@ export async function executeBackgroundTask(
       prompt: args.prompt,
       agent: task.agent,
       category: args.category,
+      ...(args.requested_subagent_type !== undefined ? { requested_subagent_type: args.requested_subagent_type } : {}),
       load_skills: args.load_skills,
       description: args.description,
       run_in_background: args.run_in_background,

src/tools/delegate-task/sync-continuation.ts

@@ -78,6 +78,7 @@ export async function executeSyncContinuation(
         prompt: args.prompt,
         ...(resumeAgent !== undefined ? { agent: resumeAgent } : {}),
         ...(args.category !== undefined ? { category: args.category } : {}),
+        ...(args.requested_subagent_type !== undefined ? { requested_subagent_type: args.requested_subagent_type } : {}),
         load_skills: args.load_skills,
         description: args.description,
         run_in_background: args.run_in_background,

src/tools/delegate-task/sync-task.ts

@@ -120,6 +120,7 @@ export async function executeSyncTask(
         prompt: args.prompt,
         agent: agentToUse,
         category: args.category,
+        ...(args.requested_subagent_type !== undefined ? { requested_subagent_type: args.requested_subagent_type } : {}),
         load_skills: args.load_skills,
         description: args.description,
         run_in_background: args.run_in_background,

src/tools/delegate-task/tool-argument-preparation.ts

@@ -60,6 +60,7 @@ export async function prepareDelegateTaskArgs(args: Record<string, unknown>, ctx
 
   args.category = category
   args.subagent_type = subagentType
+  args.requested_subagent_type = originalSubagentType
   args.description = description
   args.prompt = prompt
   args.run_in_background = runInBackground
@@ -70,6 +71,7 @@ export async function prepareDelegateTaskArgs(args: Record<string, unknown>, ctx
   return {
     category,
     subagent_type: subagentType,
+    requested_subagent_type: originalSubagentType,
     description,
     prompt,
     run_in_background: runInBackground === true,

src/tools/delegate-task/types.ts

@@ -14,6 +14,7 @@ export interface DelegateTaskArgs {
   prompt: string
   category?: string
   subagent_type?: string
+  requested_subagent_type?: string
   run_in_background: boolean
   task_id?: string
   command?: string

src/tools/delegate-task/unstable-agent-task.ts

@@ -74,6 +74,7 @@ export async function executeUnstableAgentTask(
         prompt: args.prompt,
         agent: agentToUse,
         category: args.category,
+        ...(args.requested_subagent_type !== undefined ? { requested_subagent_type: args.requested_subagent_type } : {}),
         load_skills: args.load_skills,
         description: args.description,
         run_in_background: args.run_in_background,