feat: add support for Codex's request_user_input tool

Implement full support for the request_user_input tool with both Web UI and CLI
components. This includes:

- New view and footer components for request_user_input tool UI
- Tool registration in knownTools and view registries
- Nested answer format support (Record<string, { answers: string[] }>)
- Backward compatibility with flat answer format (Record<string, string[]>)
- Permission handler updates for CLI request_user_input acceptance
- Type definitions and schema updates across shared/cli/server/web packages
- Translation strings for request_user_input UI elements
- Conditional footer rendering in ToolCard for question tools

shared/src/schemas.ts

@@ -67,7 +67,12 @@ export const AgentStateCompletedRequestSchema = z.object({
     mode: z.string().optional(),
     decision: z.enum(['approved', 'approved_for_session', 'denied', 'abort']).optional(),
     allowTools: z.array(z.string()).optional(),
-    answers: z.record(z.string(), z.array(z.string())).optional()
+    // Flat format: Record<string, string[]> (AskUserQuestion)
+    // Nested format: Record<string, { answers: string[] }> (request_user_input)
+    answers: z.union([
+        z.record(z.string(), z.array(z.string())),
+        z.record(z.string(), z.object({ answers: z.array(z.string()) }))
+    ]).optional()
 })
 
 export type AgentStateCompletedRequest = z.infer<typeof AgentStateCompletedRequestSchema>