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/hours/types.ts

@@ -0,0 +1,76 @@
+export type HourId =
+  | 'prime'
+  | 'compline'
+  | 'terce'
+  | 'sext'
+  | 'none'
+  | 'lauds'
+  | 'vespers'
+  | 'matins';
+
+export const HOUR_IDS: readonly HourId[] = [
+  'prime',
+  'compline',
+  'terce',
+  'sext',
+  'none',
+  'lauds',
+  'vespers',
+  'matins',
+];
+
+/** Reference into one of the proper-text stores (data/propers/**). Not built yet — placeholder shape. */
+export interface PropersRef {
+  source: 'sanctoral' | 'temporal' | 'common';
+  id: string;
+}
+
+export type HourPart =
+  | { kind: 'hymn' | 'chapter' | 'responsory' | 'versicle' | 'prayer'; textRef: PropersRef }
+  | { kind: 'psalm'; psalmNumber: number; antiphonRef?: PropersRef }
+  | { kind: 'canticle'; canticleId: string; antiphonRef?: PropersRef }
+  | {
+      kind: 'lesson';
+      textRef: PropersRef;
+      nocturn?: number;
+      lessonSource?: 'historical' | 'continuous-plan';
+    }
+  // Unused by Prime/Compline/the little hours — exercised starting milestone 4.
+  | { kind: 'variable'; resolve: 'by-weekday' | 'by-season' | 'by-feast-rank' };
+
+export interface HourDefinition {
+  id: HourId;
+  parts: HourPart[];
+}
+
+/** A part with its text actually filled in, ready for the UI to render. */
+export type ResolvedPart =
+  | { kind: 'hymn' | 'chapter' | 'responsory' | 'versicle' | 'prayer'; text: ResolvedText }
+  | { kind: 'psalm'; psalmNumber: number; antiphon?: ResolvedText; verses: ResolvedVerse[] }
+  | { kind: 'canticle'; canticleId: string; antiphon?: ResolvedText };
+
+export interface ResolvedVerse {
+  n: number;
+  text: Partial<Record<string, string>>;
+  status: Partial<Record<string, 'verified' | 'draft' | 'missing'>>;
+}
+
+export interface ResolvedText {
+  text: Partial<Record<string, string>>;
+  status: Partial<Record<string, 'verified' | 'draft' | 'missing'>>;
+}
+
+/**
+ * The "ordo" for one hour on one day — the fully resolved output of
+ * combining calendar resolution, the psalter distribution, and an
+ * HourDefinition. This is the seam between the engine and the UI: the UI
+ * never needs to know whether a part came from a static YAML row or a
+ * resolved rule.
+ */
+export interface ResolvedOrdo {
+  hourId: HourId;
+  date: string;
+  parts: ResolvedPart[];
+  /** Set when this hour hasn't been built yet — UI shows "coming soon" instead of empty content. */
+  notImplemented?: true;
+}