rosary: progressive enhancement for no-JS browsers

SVG beads are now anchor links to prayer sections, with CSS :has(:target)
highlighting the active bead. Inline mystery images render in each decade
by default and hide when JS takes over. StreakCounter uses a form action
fallback for logged-in users and hides entirely for anonymous no-JS users.
Show images toggle now works via ?images= URL param like the other toggles.

src/lib/components/faith/StreakCounter.svelte

@@ -10,9 +10,10 @@ let streak = $state<ReturnType<typeof getRosaryStreak> | null>(null);
 interface Props {
 	streakData?: { length: number; lastPrayed: string | null } | null;
 	lang?: 'de' | 'en';
+	isLoggedIn?: boolean;
 }
 
-let { streakData = null, lang = 'de' }: Props = $props();
+let { streakData = null, lang = 'de', isLoggedIn = false }: Props = $props();
 
 const isEnglish = $derived(lang === 'en');
 
@@ -42,23 +43,25 @@ async function pray() {
 }
 </script>
 
-<div class="streak-container">
+<div class="streak-container" class:no-js-hidden={!isLoggedIn}>
 	<div class="streak-display">
 		<StreakAura value={displayLength} {burst} />
 		<span class="streak-label">{labels.days}</span>
 	</div>
-	<button
-		class="streak-button"
-		onclick={pray}
-  		disabled={prayedToday}
-		aria-label={labels.ariaLabel}
-	>
-		{#if prayedToday}
-			{labels.prayedToday}
-		{:else}
-			{labels.prayed}
-		{/if}
-	</button>
+	<form method="POST" action="?/pray" onsubmit={(e) => { e.preventDefault(); pray(); }}>
+		<button
+			class="streak-button"
+			type="submit"
+			disabled={prayedToday}
+			aria-label={labels.ariaLabel}
+		>
+			{#if prayedToday}
+				{labels.prayedToday}
+			{:else}
+				{labels.prayed}
+			{/if}
+		</button>
+	</form>
 </div>
 
 <style>
@@ -119,6 +122,15 @@ async function pray() {
 	opacity: 0.7;
 }
 
+/* Hide for non-logged-in users without JS (no form action available) */
+.no-js-hidden {
+	display: none;
+}
+
+:global(html.js-enabled) .no-js-hidden {
+	display: flex;
+}
+
 @media (prefers-color-scheme: light) {
 	.streak-button:disabled {
 		background: var(--nord4);

src/routes/[faithLang=faithLang]/[rosary=rosaryLang]/+page.server.ts

@@ -1,5 +1,5 @@
 import { mysteryVerseDataDe, mysteryVerseDataEn } from '$lib/data/mysteryVerseData';
-import type { PageServerLoad } from './$types';
+import type { PageServerLoad, Actions } from './$types';
 
 interface StreakData {
   length: number;
@@ -43,13 +43,16 @@ export const load: PageServerLoad = async ({ url, fetch, locals, params }) => {
   const luminousParam = url.searchParams.get('luminous');
   const latinParam = url.searchParams.get('latin');
   const mysteryParam = url.searchParams.get('mystery');
+  const imagesParam = url.searchParams.get('images');
 
   const hasUrlLuminous = luminousParam !== null;
   const hasUrlLatin = latinParam !== null;
   const hasUrlMystery = mysteryParam !== null;
+  const hasUrlImages = imagesParam !== null;
 
   const initialLuminous = hasUrlLuminous ? luminousParam !== '0' : true;
   const initialLatin = hasUrlLatin ? latinParam !== '0' : true;
+  const initialShowImages = hasUrlImages ? imagesParam !== '0' : true;
 
   const todaysMystery = getMysteryForWeekday(new Date(), initialLuminous);
 
@@ -78,12 +81,46 @@ export const load: PageServerLoad = async ({ url, fetch, locals, params }) => {
   return {
     mysteryDescriptions: params.faithLang === 'faith' ? mysteryVerseDataEn : mysteryVerseDataDe,
     streakData,
+    isLoggedIn: !!session?.user?.nickname,
     initialMystery,
     todaysMystery,
     initialLuminous,
     initialLatin,
     hasUrlMystery,
     hasUrlLuminous,
-    hasUrlLatin
+    hasUrlLatin,
+    initialShowImages,
+    hasUrlImages
   };
 };
+
+export const actions: Actions = {
+  pray: async ({ locals, fetch }) => {
+    const session = await locals.auth();
+    if (!session?.user?.nickname) {
+      return { success: false };
+    }
+
+    const res = await fetch('/api/glaube/rosary-streak');
+    const current = res.ok ? await res.json() : { length: 0, lastPrayed: null };
+
+    const today = new Date().toISOString().split('T')[0];
+    if (current.lastPrayed === today) {
+      return { success: true, alreadyPrayed: true };
+    }
+
+    const yesterday = new Date();
+    yesterday.setDate(yesterday.getDate() - 1);
+    const yesterdayStr = yesterday.toISOString().split('T')[0];
+
+    const newLength = current.lastPrayed === yesterdayStr ? current.length + 1 : 1;
+
+    await fetch('/api/glaube/rosary-streak', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ length: newLength, lastPrayed: today })
+    });
+
+    return { success: true };
+  }
+};

src/routes/[faithLang=faithLang]/[rosary=rosaryLang]/+page.svelte

@@ -29,8 +29,8 @@ let { data } = $props();
 // Toggle for including Luminous mysteries (initialized from URL param or default)
 let includeLuminous = $state(data.initialLuminous);
 
-// Toggle for showing mystery images
-let showImages = $state(true);
+// Toggle for showing mystery images (initialized from URL param or default)
+let showImages = $state(data.initialShowImages);
 
 // Flag to prevent saving before we've loaded from localStorage
 let hasLoadedFromStorage = $state(false);
@@ -76,11 +76,12 @@ function selectMystery(mysteryType) {
 }
 
 // Build URLs preserving full state (for no-JS fallback)
-function buildHref({ mystery = selectedMystery, luminous = includeLuminous, latin = data.initialLatin } = {}) {
+function buildHref({ mystery = selectedMystery, luminous = includeLuminous, latin = data.initialLatin, images = showImages } = {}) {
 	const params = new URLSearchParams();
 	params.set('mystery', mystery);
 	if (!luminous) params.set('luminous', '0');
 	if (!latin) params.set('latin', '0');
+	if (!images) params.set('images', '0');
 	return `?${params.toString()}`;
 }
 
@@ -91,6 +92,7 @@ function mysteryHref(mystery) {
 // Toggle hrefs navigate to opposite state (for no-JS self-submit)
 let luminousToggleHref = $derived(buildHref({ luminous: !includeLuminous }));
 let latinToggleHref = $derived(buildHref({ latin: !data.initialLatin }));
+let imagesToggleHref = $derived(buildHref({ images: !showImages }));
 
 // When luminous toggle changes, update today's mystery and fix invalid selection
 $effect(() => {
@@ -264,9 +266,11 @@ onMount(() => {
 			includeLuminous = savedIncludeLuminous === 'true';
 		}
 	}
-	const savedShowImages = localStorage.getItem('rosary_showImages');
-	if (savedShowImages !== null) {
-		showImages = savedShowImages === 'true';
+	if (!data.hasUrlImages) {
+		const savedShowImages = localStorage.getItem('rosary_showImages');
+		if (savedShowImages !== null) {
+			showImages = savedShowImages === 'true';
+		}
 	}
 
 	// If no mystery was specified in URL, recompute based on loaded preferences
@@ -283,6 +287,9 @@ onMount(() => {
 	// Now allow saving to localStorage
 	hasLoadedFromStorage = true;
 
+	// Mark JS as active so no-JS fallback images hide
+	document.documentElement.classList.add('js-enabled');
+
 	// PiP resize handler — show/hide when crossing the breakpoint
 	const onPipResize = () => {
 		if (!rosaryPipEl) return;
@@ -306,6 +313,7 @@ onMount(() => {
 	return () => {
 		cleanupScrollSync();
 		window.removeEventListener('resize', onPipResize);
+		document.documentElement.classList.remove('js-enabled');
 	};
 });
 </script>
@@ -407,6 +415,7 @@ onMount(() => {
 
 .prayer-section {
 	scroll-snap-align: start;
+	scroll-margin-top: 3rem;
 	padding: 2rem;
 	margin-bottom: 2rem;
 	background: var(--accent-dark);
@@ -415,6 +424,40 @@ onMount(() => {
 	position: relative;
 }
 
+/* No-JS: highlight SVG beads when a prayer section is :target */
+.rosary-layout:has(#start1:target) :global(.bead[data-section="start1"]),
+.rosary-layout:has(#start2:target) :global(.bead[data-section="start2"]),
+.rosary-layout:has(#start3:target) :global(.bead[data-section="start3"]),
+.rosary-layout:has(#secret1:target) :global(.bead[data-section="secret1"]),
+.rosary-layout:has(#secret2:target) :global(.bead[data-section="secret2"]),
+.rosary-layout:has(#secret3:target) :global(.bead[data-section="secret3"]),
+.rosary-layout:has(#secret4:target) :global(.bead[data-section="secret4"]),
+.rosary-layout:has(#secret5:target) :global(.bead[data-section="secret5"]),
+.rosary-layout:has(#final_salve:target) :global(.bead[data-section="final_salve"]),
+.rosary-layout:has(#final_schlussgebet:target) :global(.bead[data-section="final_schlussgebet"]),
+.rosary-layout:has(#final_michael:target) :global(.bead[data-section="final_michael"]) {
+	fill: var(--nord11) !important;
+	filter: drop-shadow(0 0 8px var(--nord11));
+}
+
+.rosary-layout:has(#lbead1:target) :global(.large-bead[data-section="lbead1"]),
+.rosary-layout:has(#lbead2:target) :global(.large-bead[data-section="lbead2"]),
+.rosary-layout:has(#secret1_transition:target) :global(.large-bead[data-section="secret1_transition"]),
+.rosary-layout:has(#secret2_transition:target) :global(.large-bead[data-section="secret2_transition"]),
+.rosary-layout:has(#secret3_transition:target) :global(.large-bead[data-section="secret3_transition"]),
+.rosary-layout:has(#secret4_transition:target) :global(.large-bead[data-section="secret4_transition"]),
+.rosary-layout:has(#final_transition:target) :global(.large-bead[data-section="final_transition"]),
+.rosary-layout:has(#final_paternoster:target) :global(.large-bead[data-section="final_paternoster"]) {
+	fill: var(--nord13) !important;
+	filter: drop-shadow(0 0 10px var(--nord13));
+}
+
+.rosary-layout:has(#cross:target) :global([data-section="cross"] .cross-symbol),
+.rosary-layout:has(#final_cross:target) :global([data-section="final_cross"] .cross-symbol) {
+	fill: var(--nord11) !important;
+	filter: drop-shadow(0 0 10px var(--nord11));
+}
+
 @media (prefers-color-scheme: light) {
 	.prayer-section {
 		background: var(--nord5);
@@ -597,6 +640,28 @@ h1 {
 	height: 50vh;
 }
 
+/* Inline mystery images: visible without JS, hidden when JS takes over */
+.decade-inline-image {
+	margin: 1rem auto;
+	text-align: center;
+}
+
+.decade-inline-image img {
+	max-width: 100%;
+	max-height: 40vh;
+	border-radius: 8px;
+}
+
+.decade-inline-image figcaption {
+	font-size: 0.85rem;
+	color: var(--nord4);
+	margin-top: 0.5rem;
+}
+
+:global(html.js-enabled) .decade-inline-image {
+	display: none;
+}
+
 /* Mystery images: third grid column (desktop), PiP (mobile) */
 .mystery-image-column {
 	display: none;
@@ -633,7 +698,7 @@ h1 {
 
 	<!-- Toggle Controls & Streak Counter -->
 	<div class="controls-row">
-		<StreakCounter streakData={data.streakData} lang={data.lang} />
+		<StreakCounter streakData={data.streakData} lang={data.lang} isLoggedIn={data.isLoggedIn} />
 		<div class="toggle-controls">
 			<!-- Luminous Mysteries Toggle (link for no-JS, enhanced with onclick for JS) -->
 			<Toggle
@@ -645,6 +710,7 @@ h1 {
 			<Toggle
 				bind:checked={showImages}
 				label={labels.showImages}
+				href={imagesToggleHref}
 			/>
 
 			<!-- Language Toggle (link for no-JS, enhanced with onclick for JS) -->
@@ -669,6 +735,7 @@ h1 {
 			<!-- Cross & Credo -->
 			<div
 				class="prayer-section"
+				id="cross"
 				bind:this={sectionElements.cross}
 				data-section="cross"
 			>
@@ -686,6 +753,7 @@ h1 {
 			<!-- First Large Bead -->
 			<div
 				class="prayer-section"
+				id="lbead1"
 				bind:this={sectionElements.lbead1}
 				data-section="lbead1"
 			>
@@ -696,6 +764,7 @@ h1 {
 			<!-- First Ave Maria (Faith) -->
 			<div
 				class="prayer-section"
+				id="start1"
 				bind:this={sectionElements.start1}
 				data-section="start1"
 			>
@@ -710,6 +779,7 @@ h1 {
 			<!-- Second Ave Maria (Hope) -->
 			<div
 				class="prayer-section"
+				id="start2"
 				bind:this={sectionElements.start2}
 				data-section="start2"
 			>
@@ -724,6 +794,7 @@ h1 {
 			<!-- Third Ave Maria (Love) -->
 			<div
 				class="prayer-section"
+				id="start3"
 				bind:this={sectionElements.start3}
 				data-section="start3"
 			>
@@ -738,6 +809,7 @@ h1 {
 			<!-- Gloria Patri before decades -->
 			<div
 				class="prayer-section"
+				id="lbead2"
 				bind:this={sectionElements.lbead2}
 				data-section="lbead2"
 			>
@@ -752,11 +824,20 @@ h1 {
 				<!-- Ave Maria decade (Gesätz) -->
 				<div
 					class="prayer-section decade"
+					id={`secret${decadeNum}`}
 					bind:this={sectionElements[`secret${decadeNum}`]}
 					data-section={`secret${decadeNum}`}
 				>
 					<h2>{decadeNum}. {labels.decade}: {currentMysteryTitles[decadeNum - 1]}</h2>
 
+					{#if showImages && allMysteryImages[selectedMystery]?.get(decadeNum)}
+						{@const img = allMysteryImages[selectedMystery].get(decadeNum)}
+						<figure class="decade-inline-image">
+							<img src={img.src} alt={isEnglish ? img.title : img.titleDe} loading="lazy" />
+							<figcaption>{img.artist ? `${img.artist}, ` : ''}<em>{isEnglish ? img.title : img.titleDe}</em>{img.year ? `, ${img.year}` : ''}</figcaption>
+						</figure>
+					{/if}
+
 					<h3>{labels.hailMary} <span class="repeat-count">(10×)</span></h3>
 					<AveMaria
 						mysteryLatin={currentMysteriesLatin[decadeNum - 1]}
@@ -784,6 +865,7 @@ h1 {
 				{#if decadeNum < 5}
 					<div
 						class="prayer-section"
+						id={`secret${decadeNum}_transition`}
 						bind:this={sectionElements[`secret${decadeNum}_transition`]}
 						data-section={`secret${decadeNum}_transition`}
 					>
@@ -802,6 +884,7 @@ h1 {
 			<!-- Final prayers after 5th decade -->
 			<div
 				class="prayer-section"
+				id="final_transition"
 				bind:this={sectionElements.final_transition}
 				data-section="final_transition"
 			>
@@ -816,6 +899,7 @@ h1 {
 
 			<div
 				class="prayer-section"
+				id="final_salve"
 				bind:this={sectionElements.final_salve}
 				data-section="final_salve"
 			>
@@ -825,6 +909,7 @@ h1 {
 
 			<div
 				class="prayer-section"
+				id="final_schlussgebet"
 				bind:this={sectionElements.final_schlussgebet}
 				data-section="final_schlussgebet"
 			>
@@ -834,6 +919,7 @@ h1 {
 
 			<div
 				class="prayer-section"
+				id="final_michael"
 				bind:this={sectionElements.final_michael}
 				data-section="final_michael"
 			>
@@ -843,6 +929,7 @@ h1 {
 
 			<div
 				class="prayer-section"
+				id="final_paternoster"
 				bind:this={sectionElements.final_paternoster}
 				data-section="final_paternoster"
 			>
@@ -852,6 +939,7 @@ h1 {
 
 			<div
 				class="prayer-section"
+				id="final_cross"
 				bind:this={sectionElements.final_cross}
 				data-section="final_cross"
 			>

src/routes/[faithLang=faithLang]/[rosary=rosaryLang]/RosarySvg.svelte

@@ -128,34 +128,34 @@
 			class="cross-symbol" class:active-cross={activeSection === 'final_cross'} />
 	</g>
 
-	<!-- Invisible hitboxes for larger tap targets -->
+	<!-- Invisible hitboxes for larger tap targets (anchor links for no-JS fallback) -->
 	<g class="hitboxes">
 		<!-- Cross hitbox -->
-		<rect x="-15" y="-30" width="80" height="80" data-section="cross" />
+		<a href="#cross"><rect x="-15" y="-30" width="80" height="80" data-section="cross" /></a>
 
 		<!-- Individual bead hitboxes -->
-		<circle cx="25" cy={pos.lbead1} r="25" data-section="lbead1" />
-		<circle cx="25" cy={pos.start1} r="20" data-section="start1" />
-		<circle cx="25" cy={pos.start2} r="20" data-section="start2" />
-		<circle cx="25" cy={pos.start3} r="20" data-section="start3" />
-		<circle cx="25" cy={pos.lbead2} r="25" data-section="lbead2" />
+		<a href="#lbead1"><circle cx="25" cy={pos.lbead1} r="25" data-section="lbead1" /></a>
+		<a href="#start1"><circle cx="25" cy={pos.start1} r="20" data-section="start1" /></a>
+		<a href="#start2"><circle cx="25" cy={pos.start2} r="20" data-section="start2" /></a>
+		<a href="#start3"><circle cx="25" cy={pos.start3} r="20" data-section="start3" /></a>
+		<a href="#lbead2"><circle cx="25" cy={pos.lbead2} r="25" data-section="lbead2" /></a>
 
 		<!-- Decade hitboxes -->
 		{#each [1, 2, 3, 4, 5] as d (d)}
 			{@const decadePos = pos[`secret${d}`]}
-			<rect x="-15" y={decadePos - 2} width="80" height={DECADE_OFFSET + 9 * BEAD_SPACING + 12} data-section={`secret${d}`} />
+			<a href={`#secret${d}`}><rect x="-15" y={decadePos - 2} width="80" height={DECADE_OFFSET + 9 * BEAD_SPACING + 12} data-section={`secret${d}`} /></a>
 		{/each}
 
 		<!-- Transition bead hitboxes -->
 		{#each [1, 2, 3, 4] as d (d)}
-			<circle cx="25" cy={pos[`secret${d}_transition`]} r="25" data-section={`secret${d}_transition`} />
+			<a href={`#secret${d}_transition`}><circle cx="25" cy={pos[`secret${d}_transition`]} r="25" data-section={`secret${d}_transition`} /></a>
 		{/each}
-		<circle cx="25" cy={pos.final_transition} r="25" data-section="final_transition" />
-		<circle cx="25" cy={pos.final_salve} r="20" data-section="final_salve" />
-		<circle cx="25" cy={pos.final_schlussgebet} r="20" data-section="final_schlussgebet" />
-		<circle cx="25" cy={pos.final_michael} r="20" data-section="final_michael" />
-		<circle cx="25" cy={pos.final_paternoster} r="25" data-section="final_paternoster" />
-		<rect x="-15" y={pos.final_cross - 50} width="80" height="80" data-section="final_cross" />
+		<a href="#final_transition"><circle cx="25" cy={pos.final_transition} r="25" data-section="final_transition" /></a>
+		<a href="#final_salve"><circle cx="25" cy={pos.final_salve} r="20" data-section="final_salve" /></a>
+		<a href="#final_schlussgebet"><circle cx="25" cy={pos.final_schlussgebet} r="20" data-section="final_schlussgebet" /></a>
+		<a href="#final_michael"><circle cx="25" cy={pos.final_michael} r="20" data-section="final_michael" /></a>
+		<a href="#final_paternoster"><circle cx="25" cy={pos.final_paternoster} r="25" data-section="final_paternoster" /></a>
+		<a href="#final_cross"><rect x="-15" y={pos.final_cross - 50} width="80" height="80" data-section="final_cross" /></a>
 	</g>
 
 </svg>

src/routes/[faithLang=faithLang]/[rosary=rosaryLang]/rosaryScrollSync.js

@@ -194,6 +194,7 @@ export function setupScrollSync({
 	}
 
 	// Handle clicks on SVG elements to jump to prayers
+	// preventDefault() overrides the anchor-link fallback when JS is enabled
 	const handleSvgClick = (e) => {
 		const svgContainer = getSvgContainer();
 		const sectionElements = getSectionElements();
@@ -201,6 +202,7 @@ export function setupScrollSync({
 		while (target && target !== svgContainer) {
 			const section = target.dataset.section;
 			if (section && sectionElements[section]) {
+				e.preventDefault();
 				setActiveSection(section);
 				setScrollLock('click', 1500);