Add source popup reload action

public/app.ts

@@ -34,6 +34,7 @@ const sidebarOverlay = document.querySelector("#sidebarOverlay");
 const sourceModal = document.querySelector("#sourceModal");
 const sourceTitle = document.querySelector("#sourceTitle");
 const sourceList = document.querySelector("#sourceList");
+const sourceReloadButton = document.querySelector("#sourceReloadButton");
 const sourceCloseButton = document.querySelector("#sourceCloseButton");
 const settingsButton = document.querySelector("#settingsButton");
 const themeToggle = document.querySelector("#themeToggle");
@@ -190,6 +191,7 @@ loadProductButton.disabled = true;
 loadProductButton.title = "Load existing product attribute info.";
 loadProductButton.addEventListener("click", loadProductInfoForCurrentProduct);
 findSourcesButton.addEventListener("click", findSourcesForCurrentProduct);
+sourceReloadButton.addEventListener("click", () => findSourcesForCurrentProduct(true));
 getPicturesButton.addEventListener("click", getPicturesForCurrentProduct);
 secondaryPanelToggle.addEventListener("click", toggleSecondaryPanel);
 mainWorkspaceToggle.addEventListener("click", toggleMainWorkspace);
@@ -700,14 +702,14 @@ function closeSuggestedProducts() {
   suggestedList.replaceChildren();
 }
 
-async function findSourcesForCurrentProduct() {
+async function findSourcesForCurrentProduct(forceRefresh = false) {
   if (!manufacturerSelect.value || !currentProduct) {
     setTableMessage("Select manufacturer and product first.");
     return;
   }
 
   const savedDraft = readLocalDraft();
-  if (savedDraft?.sources) {
+  if (savedDraft?.sources && !forceRefresh) {
     renderSourceCandidates(savedDraft.sources.items || []);
     updateFindSourcesButtonState();
     sourceTitle.textContent = "Source candidates (cached)";
@@ -717,6 +719,7 @@ async function findSourcesForCurrentProduct() {
 
   const supplierColorGroup = getFirstSupplierColorGroup();
   findSourcesButton.disabled = true;
+  sourceReloadButton.disabled = true;
     setButtonLabel(findSourcesButton, "Finding sources...");
 
   try {
@@ -746,6 +749,7 @@ async function findSourcesForCurrentProduct() {
   } catch (error) {
     setTableMessage(error.message || "Source search failed.");
   } finally {
+    sourceReloadButton.disabled = false;
     updateFindSourcesButtonState();
   }
 }