fix: portfolio index rows can be unlocked again

clicking the already-locked row navigated (the old second-click-to-open flow), which meant there was no way back to the unlocked hover-browsing state once something got locked. row clicks now toggle lock/unlock uniformly everywhere; the preview image is the one dedicated way to actually open a project, on the index same as project pages.

assets/js/filebrowser.js

@@ -105,9 +105,8 @@
       // portfolio-index rows are real links (data-img + href together) — a
       // single click there used to jump straight into the project, which
       // meant hovering was the only way to preview a different one first.
-      // now the first click just locks it (no navigation); only a second
-      // click on the already-locked row, or the preview image itself,
-      // actually navigates.
+      // now a click just locks/unlocks it like any other row; the preview
+      // image is the dedicated way to actually navigate in.
       var isProjectLink = a.hasAttribute("href") && a.hasAttribute("data-img");
       a.addEventListener("mouseenter", function () {
         if (locked < 0) { hidePeek(); render(i); }   // nothing locked — hover drives the main preview, like before locking existed
@@ -115,16 +114,9 @@
         else hidePeek();
       });
       a.addEventListener("click", function (e) {
-        if (isProjectLink) {
-          if (locked === i) return;   // already locked — let the link through
-          e.preventDefault();
-          lock(i);
-          render(i, true);
-          hidePeek();
-          return;
-        }
-        if (a.getAttribute("href")) return;        // ".." navigates normally
-        e.preventDefault();
+        if (isProjectLink) e.preventDefault();       // never navigate from the row itself
+        else if (a.getAttribute("href")) return;      // ".." navigates normally
+        else e.preventDefault();
         if (locked === i) { unlock(); ghostClear(); }
         else { lock(i); render(i, true); }
         hidePeek();