feat(claude): add effort setting parity with model across stack (#353)

Co-authored-by: Xiaoyi <xiaoyizhang@microsoft.com>

web/src/hooks/mutations/useSpawnSession.ts

@@ -8,6 +8,7 @@ type SpawnInput = {
     directory: string
     agent?: 'claude' | 'codex' | 'cursor' | 'gemini' | 'opencode'
     model?: string
+    effort?: string
     modelReasoningEffort?: string
     yolo?: boolean
     sessionType?: 'simple' | 'worktree'
@@ -34,7 +35,8 @@ export function useSpawnSession(api: ApiClient | null): {
                 input.modelReasoningEffort,
                 input.yolo,
                 input.sessionType,
-                input.worktreeName
+                input.worktreeName,
+                input.effort
             )
         },
         onSuccess: () => {