fix(decrypt): a11y for DecryptionProgress + keep label announceable in banner#250
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Follow-up to #241. - Wrap DecryptionProgress in `role="status" aria-live="polite"` so the Yivi → Decrypting transition is announced to assistive tech (WCAG 4.1.3 Status Messages). - Indeterminate progressbar: drop `aria-valuemin`/`aria-valuemax` (only meaningful alongside `aria-valuenow`) and add `aria-busy="true"`. - Trim the multi-line removal-context comment in fallback/Decrypt.svelte to a single line stating the current invariant. Closes #138
… banner Switch from display:none to visually-hidden (clip) so the aria-live status region added in #242 still announces the Yivi → Decrypting transition while the banner message owns the visual messaging.
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Code review
Small, focused a11y fix: adds role="status"/aria-live="polite" to DecryptionProgress, swaps aria-valuemin/max for aria-busy on the indeterminate bar, and replaces display:none with visually-hidden CSS on the banner label so the live region remains announceable. svelte-check passes 0/0.
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[Code review] role="status" has an implicit aria-atomic="true", so on the determinate branch the whole region is re-announced each time decryptPct ticks an integer. Progress is already conveyed via the inner role="progressbar" + aria-valuenow — consider scoping the live region to the label or marking .percent with aria-live="off" to reduce chatter. Not a blocker.
…debug sandbox - DecryptionProgress: move role=status onto the .label only, drop the container-level live region and the aria-busy on the indeterminate progressbar. Prevents per-tick percentage spam in determinate mode and removes the widget-inside-live-region anti-pattern. - download/+page.svelte: revert the in-banner label to display:none, and promote the banner-row <p> to role=status so both Decrypting and Done transitions are announced from one place. Capture caught errors and render a ReportErrorButton under ServerError. - ReportErrorButton: small reusable inline reporter that reuses filesharing.crash.* i18n keys and the existing Glitchtip-backed reportError() client. Self-hides without a DSN. - debug/download-flow: dev-only sandbox that drives the full state machine by hand — auto-play scenarios, manual percentage slider, retry-status toggle, and a preview of the ServerError report button.
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Code review
Stage 1 approved: prior aria-atomic concern is cleanly resolved — role="status" scoped to the .label only, no aria-busy on the indeterminate progressbar, banner uses its own role="status" <p>. Build + svelte-check clean.
Rule compliance
[Rule: promised-vs-delivered] PR body lists two changes that aren't in the diff:
DecryptionProgress.svelte: "addaria-busy="true"" — not present (Stage 1 notes this was intentionally dropped).download/+page.sveltebanner: "swapdisplay: noneon the in-banner.labelfor visually-hidden CSS" — selector atdownload/+page.svelte:629-630still hasdisplay: none.
The implemented behavior is fine; please update the PR description so it matches what's shipping.
Resolve conflict in DecryptionProgress.svelte. Main (#250) already added status-message a11y by putting role="status" on the label paragraph; kept that to avoid a duplicate live region on the container. Kept this branch's aria-busy="true" on the indeterminate progressbar. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Combines the a11y improvements originally proposed in #242 with the visually-hidden adjustment needed after the success-banner refactor that landed in #249.
DecryptionProgressnow announces the Yivi → Decrypting transition viarole="status" aria-live="polite".aria-valuemin/aria-valuemax(only meaningful witharia-valuenow) and addaria-busy="true".result.plaintext ?? files[0]fallback to a single-line invariant.display: noneon the in-banner.labelfor visually-hidden CSS so the newaria-liveregion still announces when the banner is the visual container.Closes #138. Supersedes #242 (#242 predates the banner refactor and would now hide the live region).
Test plan
npx svelte-check --threshold warning(0 errors, 0 warnings)