Verification videos for PR #1318 (flicker / post-login non-interactive fix)

Evidence-only branch — NOT part of the fix. Hosts the before/after Playwright
recordings linked from the PR #1318 description so the diff stays code-only.

Refs: dspace-customers#725, PR #1288, PR #1317

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: milanmajchrak