STORY-048: Responses Tab

## User Story

As a Conference Organizer,
I want to browse all survey responses in a master-detail view on a dedicated Responses tab,
So that I can systematically review individual feedback across all submissions.

## Iteration
2025-12-02-admin-page

## Priority
Must Have

## Size
M

## Story File
`product/iterations/2025-12-02-admin-page/stories/story-048-responses-tab.md`