Milestone 0/1: shell, calendar/psalter/hours scaffold, Prime

Client-side-first PWA (Vite/TS, no backend) per the approved plan: day-
navigable shell listing all 8 hours, Prime fully resolves via the
calendar -> psalter -> ordo pipeline, the other 7 hours are registered
but flagged not-implemented. Sanctoral/temporal calendar data uses a
day -> id indirection layer (saints, easter-offsets, fixed-date-calendar)
so reassigning a feast to a different day is a data edit, not a code
change. Docker (Caddy-serving-static) + Gitea CI workflow scaffolded to
match the eec/drip/bookshop operational pattern.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/psalter/distribution.ts

@@ -0,0 +1,12 @@
+import type { HourId } from '../hours/types';
+import type { Weekday } from '../calendar/types';
+import distributionData from '../data/psalter-distribution.yml';
+
+type DistributionTable = Partial<Record<HourId, Partial<Record<Weekday, number[]>>>>;
+
+const distribution = distributionData as DistributionTable;
+
+/** Placeholder distribution — see data/psalter-distribution.yml for caveats. */
+export function getPsalmNumbersFor(hourId: HourId, weekday: Weekday): number[] {
+  return distribution[hourId]?.[weekday] ?? [];
+}

src/psalter/index.ts

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+import type { Psalm } from './types';
+
+// @rollup/plugin-yaml parses each .yml into a plain object at build time —
+// no YAML parser shipped to the client.
+const modules = import.meta.glob<{ default: Psalm }>('../data/psalms/*.yml', {
+  eager: true,
+});
+
+const psalms = new Map<number, Psalm>();
+for (const mod of Object.values(modules)) {
+  psalms.set(mod.default.number, mod.default);
+}
+
+export function getPsalm(number: number): Psalm {
+  const psalm = psalms.get(number);
+  if (!psalm) {
+    throw new Error(`no data for psalm ${number}`);
+  }
+  return psalm;
+}
+
+export type { Psalm, PsalmVerse, LanguageCode, TranslationStatus } from './types';

src/psalter/types.ts

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+/** e.g. "la", "en" — open-ended so a third language is a data change, not a schema change. */
+export type LanguageCode = string;
+
+export type TranslationStatus = 'verified' | 'draft' | 'missing';
+
+export interface PsalmVerse {
+  n: number;
+  text: Partial<Record<LanguageCode, string>>;
+  status: Partial<Record<LanguageCode, TranslationStatus>>;
+}
+
+/** Keyed by Vulgate/Gallican numbering, not Hebrew/modern numbering. */
+export interface Psalm {
+  number: number;
+  verses: PsalmVerse[];
+}