perf(faith/calendar): trim yearDays, send pre-filtered feastDots

yearDays was a 365-entry array (one per day in the LY window) with
{iso, name, rank, color, seasonKey} on each — the client only needed
the color (for the needle pin on the currently-selected day; RingView
re-did the feast filter itself). Split into:

- yearDays: {iso, color} — unchanged count, but ~60% smaller per entry
  (drops name, rank, seasonKey)
- feastDots: {iso, name, rank, color} — new, pre-filtered to
  rank > ferial server-side (~150 entries instead of 365)

RingView's `feastDots` derivation shrinks to filtering out just the
currently-selected day, and `activeFeasts` filters `feastDots` by arc
bounds instead of re-scanning yearDays. needleDay's color lookup still
works with the trimmed YearDay.

Also collapses a stray `locals.session ?? (locals.session ?? …)` the
earlier #5 sweep introduced in both calendar page loaders.

TODO.md

@@ -11,7 +11,7 @@ Order = impact. Font items + app.html preload intentionally skipped.
 - [x] 5. Replace redundant `locals.auth()` with `locals.session` across all routes (68 files, 107 sites — loaders, actions, API endpoints)
 - [x] 6. Stream fitness stats loader — muscleHeatmap, nutritionStats, periods, sharedPeriods now stream via `{#await}`. `stats` still awaited (too many chart $deriveds depend on it)
 - [x] 7. Muscle-heatmap endpoint — add projection + O(1) bucket math. Overview already had a projection; set-subfield narrowing was attempted but reverted (returned malformed sets). Timeseries cap not feasible: totals are lifetime-scoped.
-- [ ] 8. Calendar payload trim — drop `name` from `yearDays`, pre-filter `feastDots` server-side
+- [x] 8. Calendar payload trim — `yearDays` narrowed to `{iso, color}` (needle lookup only), new pre-filtered `feastDots` array carries feast-specific metadata. Also fixed a stray double `locals.session ?? (locals.session ?? …)` in both calendar page loaders.
 - [ ] 9. History sessions endpoint — slim exercise payload for list view
 - [ ] 10. `Cache-Control` headers on stable API endpoints (all_brief, calendar, exercises metadata)
 - [ ] 11. Search — debounce 200 ms + server-side pre-normalized `_searchKey`

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.46.21",
+	"version": "1.46.22",
 	"private": true,
 	"type": "module",
 	"scripts": {

src/lib/calendarTypes.ts

@@ -16,14 +16,23 @@ export interface CalendarDay {
 	rite1962?: Rite1962Detail;
 }
 
-// Compact per-day shape returned for the full year so the ring / month-grid
-// overview views can render without refetching. Kept small on purpose.
+// Compact per-day shape returned for the full window of the liturgical year.
+// Kept to the bare minimum needed client-side: the ring needs a color for the
+// needle on the selected day (which may be a ferial with no rank metadata),
+// everything else goes through the separate `feastDots` array.
 export interface YearDay {
+	iso: string;
+	color: string; // primary color key (WHITE/RED/...)
+}
+
+// Pre-filtered list of days that render a feast dot on the ring — rank > feria
+// — with the metadata the ring and side panel need for each. Sent alongside
+// YearDay so clients don't have to filter 365 entries themselves.
+export interface FeastDot {
 	iso: string;
 	name: string;
 	rank: string;
-	color: string; // primary color key (WHITE/RED/...)
-	seasonKey: string | null;
+	color: string;
 }
 
 export interface SeasonArc {

src/routes/[faithLang=faithLang]/[calendar=calendarLang]/[rite=calendarRite]/[[yyyy=calendarYear]]/[[mm=calendarMonth]]/[[dd=calendarDay]]/+page.server.ts

@@ -13,16 +13,17 @@ import {
 	type Diocese1969,
 	type Rite
 } from '../../../../calendarI18n';
-import { seasonColorFor } from '../../../../calendarColors';
+import { rankDotSize, seasonColorFor } from '../../../../calendarColors';
 import {
 	getYear,
 	getYear1962,
 	isoFor
 } from '$lib/server/liturgicalCalendar';
-import type { CalendarDay, SeasonArc, YearDay } from '$lib/calendarTypes';
+import type { CalendarDay, FeastDot, SeasonArc, YearDay } from '$lib/calendarTypes';
 
 export type {
 	CalendarDay,
+	FeastDot,
 	ProperSection,
 	Rite1962Commem,
 	Rite1962Detail,
@@ -234,14 +235,25 @@ export const load: PageServerLoad = async ({ params, url, locals, fetch }) => {
 		}
 	}
 
-	const yearDays: YearDay[] = sortedYear.map((d, i) => ({
+	// `yearDays` only carries what the ring's needle-color lookup needs for any
+	// day (feast or ferial). Feast metadata (name, rank) moves into `feastDots`
+	// below so the client can iterate it directly without filtering 365 entries.
+	const yearDays: YearDay[] = sortedYear.map((d) => ({
 		iso: d.iso,
-		name: d.name,
-		rank: d.rank,
-		color: d.colorKeys[0] ?? 'GREEN',
-		seasonKey: filledSeasons[i]
+		color: d.colorKeys[0] ?? 'GREEN'
 	}));
 
+	const feastDots: FeastDot[] = [];
+	for (const d of sortedYear) {
+		if (rankDotSize(d.rank) === 0) continue;
+		feastDots.push({
+			iso: d.iso,
+			name: d.name,
+			rank: d.rank,
+			color: d.colorKeys[0] ?? 'GREEN'
+		});
+	}
+
 	const seasonArcs: SeasonArc[] = [];
 	let cur: SeasonArc | null = null;
 	for (let i = 0; i < sortedYear.length; i++) {
@@ -282,6 +294,7 @@ export const load: PageServerLoad = async ({ params, url, locals, fetch }) => {
 		month,
 		monthDays,
 		yearDays,
+		feastDots,
 		seasonArcs,
 		windowStart,
 		windowEnd,
@@ -291,6 +304,6 @@ export const load: PageServerLoad = async ({ params, url, locals, fetch }) => {
 		todayIso,
 		selected: selectedEntry,
 		selectedIso,
-		session: locals.session ?? (locals.session ?? await locals.auth())
+		session: locals.session ?? await locals.auth()
 	};
 };

src/routes/[faithLang=faithLang]/[calendar=calendarLang]/[rite=calendarRite]/[[yyyy=calendarYear]]/[[mm=calendarMonth]]/[[dd=calendarDay]]/+page.svelte

@@ -28,6 +28,7 @@
 	const month = $derived(data.month);
 	const monthDays = $derived(data.monthDays);
 	const yearDays = $derived(data.yearDays);
+	const feastDots = $derived(data.feastDots);
 	const seasonArcs = $derived(data.seasonArcs);
 	const today = $derived(data.today);
 	const todayIso = $derived(data.todayIso);
@@ -267,6 +268,7 @@
 				{year}
 				{liturgicalYear}
 				{yearDays}
+				{feastDots}
 				{seasonArcs}
 				{todayIso}
 				{selectedIso}

src/routes/[faithLang=faithLang]/[calendar=calendarLang]/[rite=calendarRite]/[[yyyy=calendarYear]]/[[mm=calendarMonth]]/[[dd=calendarDay]]/RingView.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import type { YearDay, SeasonArc } from './+page.server';
+	import type { FeastDot, YearDay, SeasonArc } from './+page.server';
 	import type { CalendarLang } from '../../../../calendarI18n';
 	import { litBg, litInk, rankDotSize } from '../../../../calendarColors';
 	import { Tween, prefersReducedMotion } from 'svelte/motion';
@@ -11,6 +11,7 @@
 		year,
 		liturgicalYear,
 		yearDays,
+		feastDots: feastDotsProp,
 		seasonArcs,
 		todayIso,
 		selectedIso = null,
@@ -25,6 +26,7 @@
 		year: number;
 		liturgicalYear: number;
 		yearDays: YearDay[];
+		feastDots: FeastDot[];
 		seasonArcs: SeasonArc[];
 		todayIso: string;
 		selectedIso?: string | null;
@@ -161,20 +163,10 @@
 		return out;
 	});
 
-	// Feast dots: keep only the highest-ranking feast per ISO date, skip ferias.
-	// The currently-selected feast is omitted because the static needle pin at
-	// the top of the ring represents it.
-	const feastDots = $derived.by(() => {
-		const byDate = new Map<string, YearDay>();
-		for (const d of yearDays) {
-			const size = rankDotSize(d.rank);
-			if (size === 0) continue;
-			if (d.iso === needleIso) continue;
-			const cur = byDate.get(d.iso);
-			if (!cur || rankDotSize(d.rank) > rankDotSize(cur.rank)) byDate.set(d.iso, d);
-		}
-		return [...byDate.values()];
-	});
+	// Feast dots come pre-filtered from the server (rank > ferial, one per ISO).
+	// Only strip the currently-selected day here since the needle pin at the top
+	// already represents it.
+	const feastDots = $derived(feastDotsProp.filter((d) => d.iso !== needleIso));
 
 	// A season can split into multiple arcs within one gregorian year (e.g.
 	// ChristmasTide spans both Dec 25–31 and Jan 1–13 of the civil year). Each
@@ -206,11 +198,8 @@
 	);
 
 	const activeFeasts = $derived.by(() => {
-		if (!active) return [] as YearDay[];
-		return yearDays.filter(
-			(d) =>
-				rankDotSize(d.rank) > 0 && d.iso >= active.start && d.iso <= active.end
-		);
+		if (!active) return [] as FeastDot[];
+		return feastDotsProp.filter((d) => d.iso >= active.start && d.iso <= active.end);
 	});
 
 	$effect(() => {

src/routes/[faithLang=faithLang]/[calendar=calendarLang]/[rite=calendarRite]/detail/[yyyy=calendarYear]/[mm=calendarMonth]/[dd=calendarDay]/+page.server.ts

@@ -96,6 +96,6 @@ export const load: PageServerLoad = async ({ params, url, locals, fetch }) => {
 		iso,
 		todayIso,
 		day1: entry,
-		session: locals.session ?? (locals.session ?? await locals.auth())
+		session: locals.session ?? await locals.auth()
 	};
 };