Stop OpenBao login redirect loop by removing URL rewriting

Remove redirect-bootstrap and mount polling that fought Ember's token
fallback. Keep cosmetic overlay and direct KeyCape OIDC on sign-in only.

scripts/openbao-verify-login-overlay.sh

@@ -58,11 +58,6 @@ overlay_js="$(curl -fsS "$BASE_URL/ui/platform-overlay/overlay.js")"
 overlay_css="$(curl -fsS "$BASE_URL/ui/platform-overlay/overlay.css")"
 presets_json="$(curl -fsS "$BASE_URL/ui/platform-overlay/presets.json")"
 
-require_pattern \
-  "index.html injects redirect bootstrap" \
-  "$index_html" \
-  '/ui/platform-overlay/redirect-bootstrap\.js'
-
 require_pattern \
   "index.html injects overlay.js" \
   "$index_html" \