will 5d500c4e1f Give Pentecost its own hymnody at Matins/Lauds/Vespers, all octave
Same gap as Ascension (pentecost-sunday is a temporal-feast id, not a
saint record) -- the mechanism fix from that commit is generic, so
this only needed the id added to ALWAYS_OVERRIDE_TEMPORAL_IDS plus
real content.

Unlike Ascension, Pentecost has 3 genuinely different hymns, one per
hour: "Jam Christus astra ascénderat" (Matins), "Beáta nobis gáudia"
(Lauds), "Veni Creátor Spíritus" (Vespers), each with its own real,
distinct chapter/responsory/versicle at Lauds vs. Vespers.

Authored matins-hymn-pentecost-sunday.yml, lauds-{capitulum,
responsory,hymn,versicle}-pentecost-sunday.yml, and
vespers-{responsory,hymn,versicle}-pentecost-sunday.yml (Vespers
reuses Lauds' chapter via the existing cross-hour fallback) -- all
live-verified against Divinum Officium (Monastic Tridentinum 1617),
2026-05-24. Confirmed the whole octave end-to-end via resolveOrdo,
including a real winning saint within the window (St. Augustine of
Canterbury) keeping his own hymn at Lauds/Vespers unaffected.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AGjUyhUZJaSjiniEmnLdak
2026-09-04 12:07:48 -04:00
2026-08-16 06:30:00 -04:00

vu

A static, offline-first PWA for praying the Divine Office — Matins, Lauds, Prime, Terce, Sext, None, Vespers, and Compline — in bilingual Latin/English, for any given date.

This isn't a reconstruction of any single historical breviary. It's a personal design that draws on several historical sources without reproducing any one of them exactly: hour structure chiefly from the Monastic Tridentinum (1617), precedence/rubrics from Divino Afflatu, and a calendar merged from both the Tridentine 1906 and Divino Afflatu calendars, with more generous handling of commemorations and octaves than any one historical rite used. See CLAUDE.md (gitignored, not shipped in this repo) or the project's own notes for the full rationale if you're extending it.

There's no backend and no database — everything is a pre-built static bundle, and the app is designed to keep working fully offline once it's been loaded once.

Development

Requires Node.js (developed against Node 20+).

npm install
npm run dev        # start the Vite dev server
npm run build       # type-check (tsc --noEmit) and produce a production build in dist/
npm run preview     # serve the production build locally
npm test            # run the test suite (vitest)

Run a single test file or a subset by name:

npx vitest run tests/hours/vespers.test.ts
npx vitest run -t "some test name"

Running in production

The app is entirely static once built, so "running it" just means serving dist/ — any static file host works, as long as it falls back to index.html for unknown paths (the app does its own client-side routing for URLs like /2026-08-09/prime).

Docker

A Dockerfile builds the static bundle with Node and serves it with Caddy:

docker build -t vu .
docker run -p 8080:80 vu

Or with Docker Compose (docker-compose.yml is included):

docker compose up -d --build

This serves the app on http://localhost:8080. Put a reverse proxy/TLS terminator in front of it for a real deployment; the container itself just listens on port 80 internally and has no configuration, secrets, or external dependencies.

Without Docker

Any static file server works — build the app, then serve dist/ with SPA-style fallback routing. For example, with Caddy directly:

npm run build
caddy file-server --root dist --listen :8080

(For a real deployment you'll want a fallback rule so unknown paths resolve to index.html — see the Caddyfile in this repo for the pattern.)

S
Description
Divine Office / Liturgy of the Hours app (pre-1955-leaning calendar, modified Benedictine psalter, whole-Bible reading plan)
Readme 14 MiB
Languages
TypeScript 99%
CSS 0.9%