fix: improve release visibility and cache handling

templates/roll_calculator.html

@@ -1023,6 +1023,8 @@
 // =====================================================
 window.ARTICLE_DATA = [];
 window.APP_CONFIG = {"forklift_rules":{"applicable_categories":["bentofix"],"rules":[{"weight_threshold_kg":1700,"max_weight_kg":2750,"requirements":{"min_core_outer_diameter_mm":170},"messages":{"en":{"warning_title":"Heavy Roll – Special Equipment Required","core_ok":"Core diameter OK (≥ 170 mm)","core_nok":"Core diameter too small"}}}],"hard_limit":{"max_weight_kg":2750,"messages":{"en":{"block_title":"Weight Limit Exceeded","block_text":"Roll weight exceeds 2750 kg maximum"}}}}};
+const ROLLCALC_ARTICLE_DATA_URL = {{ static_asset_url('article-data.json')|tojson }};
+const ROLLCALC_RECENT_CHANGES_JSON_URL = {{ static_asset_url('recent_changes.json')|tojson }};
 
 // =====================================================
 // LOAD ARTICLE DATA
@@ -1087,7 +1089,7 @@ function populateArticleDropdowns() {
 
 (async function() {
   try {
-    const resp = await fetch('/static/article-data.json');
+    const resp = await fetch(ROLLCALC_ARTICLE_DATA_URL);
     if (resp.ok) {
       window.ARTICLE_DATA = await resp.json();
       console.log('✅ Article data loaded:', window.ARTICLE_DATA.length, 'items');
@@ -1645,7 +1647,6 @@ document.addEventListener('DOMContentLoaded', () => {
 });
 
 const ROLLCALC_BUILD_VERSION = {{ build_info.version|tojson }};
-const ROLLCALC_WHATS_NEW_ITEMS = {{ whats_new_summary|tojson }};
 const ROLLCALC_LAST_SEEN_VERSION_KEY = 'rollcalc_last_seen_version';
 
 function shouldShowWhatsNew(currentVersion, storedVersion) {
@@ -1675,16 +1676,41 @@ function renderWhatsNewItems(items) {
   });
 }
 
-function maybeShowWhatsNew() {
+async function loadWhatsNewData(currentVersion) {
+  try {
+    const resp = await fetch(ROLLCALC_RECENT_CHANGES_JSON_URL);
+    if (!resp.ok) {
+      console.warn('Could not load RollCalc release notes summary:', resp.status);
+      return null;
+    }
+
+    const data = await resp.json();
+    if (!data || typeof data.version !== 'string' || !Array.isArray(data.items)) {
+      console.warn('Invalid RollCalc release notes summary format');
+      return null;
+    }
+
+    if (data.version !== currentVersion) {
+      return null;
+    }
+
+    const items = data.items.filter(item =>
+      typeof item === 'string' && item.trim()
+    );
+    return items.length ? { version: data.version, items } : null;
+  } catch (e) {
+    console.warn('Could not load RollCalc release notes summary', e);
+    return null;
+  }
+}
+
+async function maybeShowWhatsNew() {
   const overlay = document.getElementById('whatsNewOverlay');
   const versionValue = document.getElementById('whatsNewVersion');
   const continueBtn = document.getElementById('whatsNewContinueBtn');
   const openChangesBtn = document.getElementById('whatsNewOpenChangesBtn');
-  const items = Array.isArray(ROLLCALC_WHATS_NEW_ITEMS)
-    ? ROLLCALC_WHATS_NEW_ITEMS
-    : [];
 
-  if (!overlay || !versionValue || !continueBtn || !openChangesBtn || items.length === 0) return;
+  if (!overlay || !versionValue || !continueBtn || !openChangesBtn) return;
 
   let storedVersion = null;
   try {
@@ -1695,8 +1721,11 @@ function maybeShowWhatsNew() {
 
   if (!shouldShowWhatsNew(ROLLCALC_BUILD_VERSION, storedVersion)) return;
 
+  const releaseData = await loadWhatsNewData(ROLLCALC_BUILD_VERSION);
+  if (!releaseData) return;
+
   versionValue.textContent = ROLLCALC_BUILD_VERSION;
-  renderWhatsNewItems(items);
+  renderWhatsNewItems(releaseData.items);
   overlay.classList.remove('is-hidden');
 
   continueBtn.addEventListener('click', () => {