What’s new

Honest audit of the bibliography. Removed two references that were defined but never cited in body text (Friedmann 1970, Bergenius 2006) — a smaller verified bibliography is more credible than a padded one. Replaced four uses of a book-chapter citation whose bibliographic details I couldn't fully verify (Halmagyi-Curthoys 'Otolith function tests') with Brandt-Dieterich 1994, which supports the same claims with high confidence. Refined the schwannoma signature table — the previous size-magnitude table contradicted the prose ('correlates poorly with size'); replaced with a feature-finding table that matches the literature better. The references page footer note now transparently acknowledges that older entries should be cross-checked against PubMed before academic use. Total references: 11 (all cited).

All 13 deferred react-hooks v7 violations refactored to satisfy strict mode. FeedbackLink composes the mailto in the click handler instead of useEffect/useState. SearchPalette uses the key-reset pattern (no setState-in-effect on query change). Sidebar replaces the route-change effect with the React 19 "store info from previous renders" pattern, and folds the changelog-seen logic into the same render-time block. Trainer drops the hydration-randomise effect for an explicit Start button. OtrDiagram moves the prefers-reduced-motion check to the toggle click handler. QuizPlayer.SpacedCardWrap uses key={question.id} for auto-reset; TimedMode uses a deadline-based timer with a single tick effect. The eslint config is back to strict defaults — no warning-level downgrades. npm run lint: 0 errors, 0 warnings. npm run build: green. npm test: 8/8.

Verified the full pipeline on Node 22, npm 10: dependencies install cleanly, the static export completes (46 routes including 15 case dynamic prerenders), all 8 unit tests pass, and the lint step runs with 0 errors. Fixed three real bugs caught by ESLint: the eslint config referenced a plugin not loaded in flat mode; the TimedMode quiz referenced 'finish' before its const declaration (temporal dead zone); and a role=tab button carried an aria-pressed attribute that ARIA forbids on that role. Fixed the test script glob so node --test resolves files on Node 22. Static export is 5.4 MB, 47 HTML files, ready to deploy anywhere static (GitHub Pages, Netlify, S3, hospital LAN, USB stick).

A new /quick-reference route presents every disease signature as a filterable card grid — direction, magnitude, variability, OTR status, and a one-line bedside pearl, colour-coded by category (peripheral / central / canal / third-window / functional). Filter by category, fuzzy-search by name or pearl, click through to the full disease page. Fixed a hydration mismatch in the pattern trainer (Math.random in useState init produced different server vs. client renders); now deterministic on first render and randomises after mount. Pre-flight script now also sets data-active-level on the html element so the level filter applies before paint instead of after hydration — eliminates the flash of hidden content. The print-all route's heading hierarchy is now correct (single h1 in each view).

The print-all route now starts with a proper PDF cover page (title, author, affiliations, build date, disclaimer) followed by a numbered table of contents — each on its own page. A new /how-to route gives first-time visitors a five-minute orientation to the reader-level system, search palette, tools, quiz modes, bookmarks, audio, print, and feedback. The OTR diagram gains an autoplay mode that cycles through the four scenarios on a 4-second loop (respects prefers-reduced-motion). Fixed a regression: the print-all page's 'Open print dialog' button was a server-rendered onClick that did nothing — now extracted to a proper client component.

The sidebar is now a slide-in drawer on phones (≤900px) controlled by a hamburger button, with a scrim backdrop and Escape-to-close. An eight-step bucket-test instructional card sits inline on the Technique module — searchable via /technique/#bucket-howto. A 'Feedback' button in the bottom-right of every page opens a pre-filled mailto with the page URL. The sidebar 'What's new' link now shows an amber unseen-dot badge until the user visits /changelog. Rigid two-column grids in Compare and CaseRunner now stack on small screens.

Narration scripts now cover Wallenberg, Ménière's, schwannoma, SCD, OTR, and cerebellar — bringing the atlas to eleven timestamped walkthroughs. The Compare tool gains an overlay mode that draws both traces on a single bucket with a difference computation and pattern interpretation. Every disease page has section anchor IDs (#signature, #mechanism, #clinical-use, #companions, etc.) so search excerpts deep-link into specific paragraphs.

Five timestamped narration scripts (Anatomy, Technique, Normal findings, Dynamic SVV, Vestibular neuritis) with an inline player that wires up an MP3 if one exists at /audio/{id}.mp3 and falls back to transcript-only otherwise. Clickable timestamps scrub the audio. A ⌘K search palette indexes chapters, glossary, cases, quiz questions, and 18 curated excerpts; navigable by keyboard. Three new foundation-level cases on classical BPPV, peripheral vertigo with a clean HIT pattern, and gentamicin bilateral vestibulopathy bring the case library to 15.

Dynamic SVV gets a dedicated route covering centrifugation, off-vertical-axis rotation, and galvanic vestibular stimulation, with a decision table on when each paradigm earns its place in a work-up. Six new cases bring the total to twelve: inferior-division neuritis, compensated vestibular schwannoma, vestibular migraine with variable SVV direction, PPPD after a resolved neuritis, pusher syndrome, and bilateral gentamicin vestibulopathy. The print-all route now includes the dynamic SVV section.

First public build of the Subjective Visual Vertical. Includes the introduction, anatomy & physiology, technique, and normal-findings modules; full disease pages for vestibular neuritis, ocular tilt reaction, Ménière's, Wallenberg, schwannoma, SCD, BPPV, cerebellar, vestibular migraine, PPPD, and pusher; interactive SVV simulator, OTR diagram, comparison tool, and pattern recognition trainer; single-best-answer self-assessment with browse, spaced (Leitner), and timed modes; glossary with bookmarking; and a peer-reviewed references page.