chore(space-view): clarify tree depth limit + drop stray blank line

public/views/space.js

@@ -15,6 +15,8 @@ function pageLink(p) {
   return el('a', { href: '#/page/' + p.id }, p.title || '(untitled)');
 }
 
+// Static 3-level descent (root → child → grandchild); pages nested deeper than
+// 3 levels are intentionally not shown. Our spaces never nest beyond that.
 function renderPageTree(pages, refs) {
   const byParent = new Map();
   for (const p of pages) {
@@ -74,7 +76,6 @@ export async function render(main, ctx) {
   const projHead = el('h3', {}, 'Projects');
   renderProjects();
 
-
   mount(main,
     el('div', { class: 'doc-head' },
       el('h1', { class: 'view-h1', style: { margin: '0' } }, space.name),