feat(ui): clickable document viewer — open any cited document in the browser from chat chips and the sources table

frontend/assets/sources.js

@@ -21,6 +21,12 @@ function fmtDate(iso) {
   }
 }
 
+/* Viewer link (phase 10) — same encoded URL the chat chips use; both query
+ * values are percent-encoded (paths contain slashes, sometimes spaces). */
+export function documentUrl(source, path) {
+  return "/document.html?source=" + encodeURIComponent(source) + "&path=" + encodeURIComponent(path);
+}
+
 async function loadDocs() {
   let r;
   try {
@@ -56,13 +62,30 @@ async function loadDocs() {
 
 function makeRow(d) {
   const tr = document.createElement("tr");
-  const cells = [d.source, d.path, d.title, String(d.chunks), fmtDate(d.indexed_at)];
-  for (const value of cells) {
+
+  const sourceTd = document.createElement("td");
+  sourceTd.textContent = d.source; // document-derived text — never innerHTML
+  tr.appendChild(sourceTd);
+
+  // Path cell: a link to the document viewer (phase 10), full path as the
+  // accessible/hover name (the column is ellipsized).
+  const pathTd = document.createElement("td");
+  pathTd.title = d.path; // full path on hover (column is ellipsized)
+  const link = document.createElement("a");
+  link.className = "doc-link";
+  link.href = documentUrl(d.source, d.path);
+  link.target = "_blank"; // open the full document in a new tab
+  link.rel = "noopener";
+  link.title = d.path; // full path as the link's hover/accessible name
+  link.textContent = d.path;
+  pathTd.appendChild(link);
+  tr.appendChild(pathTd);
+
+  for (const value of [d.title, String(d.chunks), fmtDate(d.indexed_at)]) {
     const td = document.createElement("td");
-    td.textContent = value; // document-derived text — never innerHTML
+    td.textContent = value;
     tr.appendChild(td);
   }
-  tr.children[1].title = d.path; // full path on hover (column is ellipsized)
   return tr;
 }