feat: add Grok Build support (#1030)

* test: define Grok Build integration behavior

* feat: add Grok Build agent integration

* test: cover Grok permissions and resume paths

* docs: add Grok Build setup guide

* fix: scope Grok ACP discovery to session cwd

* fix: align Grok permission UI semantics

* docs: clarify Grok runner setup

* test: require Grok create model and effort options

* feat: add Grok create model and effort pickers

* test: define Grok runtime parity behavior

* feat: add Grok runtime ACP controls and discovery

* fix: tighten Grok runtime controls

* fix: suppress nonfatal Grok title quota errors

* feat: support Grok Auto permission mode

* feat: forward ACP native session titles for Grok

* fix: guard Grok Windows shell arguments

web/src/hooks/mutations/useSpawnSession.ts

@@ -1,5 +1,5 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query'
-import type { AgentFlavor } from '@hapi/protocol'
+import type { AgentFlavor, PermissionMode } from '@hapi/protocol'
 import type { ApiClient } from '@/api/client'
 import type { SpawnResponse } from '@/types/api'
 import { queryKeys } from '@/lib/query-keys'
@@ -12,6 +12,7 @@ type SpawnInput = {
     effort?: string
     modelReasoningEffort?: string
     yolo?: boolean
+    permissionMode?: PermissionMode
     sessionType?: 'simple' | 'worktree'
     worktreeName?: string
 }
@@ -37,7 +38,8 @@ export function useSpawnSession(api: ApiClient | null): {
                 input.yolo,
                 input.sessionType,
                 input.worktreeName,
-                input.effort
+                input.effort,
+                input.permissionMode
             )
         },
         onSuccess: () => {