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

server/src/sync/rpcGateway.ts

@@ -44,7 +44,7 @@ export class RpcGateway {
         mode?: PermissionMode,
         allowTools?: string[],
         decision?: 'approved' | 'approved_for_session' | 'denied' | 'abort',
-        answers?: Record<string, string[]>
+        answers?: Record<string, string[]> | Record<string, { answers: string[] }>
     ): Promise<void> {
         await this.sessionRpc(sessionId, 'permission', {
             id: requestId,

server/src/sync/syncEngine.ts

@@ -212,7 +212,7 @@ export class SyncEngine {
         mode?: PermissionMode,
         allowTools?: string[],
         decision?: 'approved' | 'approved_for_session' | 'denied' | 'abort',
-        answers?: Record<string, string[]>
+        answers?: Record<string, string[]> | Record<string, { answers: string[] }>
     ): Promise<void> {
         await this.rpcGateway.approvePermission(sessionId, requestId, mode, allowTools, decision, answers)
     }

server/src/web/routes/permissions.ts

@@ -8,11 +8,18 @@ import { requireSessionFromParam, requireSyncEngine } from './guards'
 
 const decisionSchema = z.enum(['approved', 'approved_for_session', 'denied', 'abort'])
 
+// Flat format: Record<string, string[]> (AskUserQuestion)
+// Nested format: Record<string, { answers: string[] }> (request_user_input)
+const answersSchema = z.union([
+    z.record(z.string(), z.array(z.string())),
+    z.record(z.string(), z.object({ answers: z.array(z.string()) }))
+])
+
 const approveBodySchema = z.object({
     mode: PermissionModeSchema.optional(),
     allowTools: z.array(z.string()).optional(),
     decision: decisionSchema.optional(),
-    answers: z.record(z.string(), z.array(z.string())).optional()
+    answers: answersSchema.optional()
 })
 
 const denyBodySchema = z.object({