"""SSR tests for the MuseHub stash page (issue #556). Verifies that ``GET /{owner}/{repo_slug}/stash`` renders stash data server-side rather than relying on client-side JavaScript fetches. Tests: - test_stash_page_renders_stash_entry_server_side — Seed a stash entry, GET the page, assert branch name in HTML without JS - test_stash_page_shows_total_count — Total count badge present in server-rendered HTML - test_stash_page_apply_form_uses_post — Apply button is a