Unify nav: drop Profile nav item, fold API Tokens into Profile page

- Nav bar already showed the logged-in user's name linking to /profile
  (cl-username); just removed the separate "Profile" and "API Tokens"
  nav items now that Profile covers both.
- Merge api_tokens.ejs into profile.ejs as a section below the existing
  profile card. /api-tokens 301-redirects to /profile.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

nodejs/views/top.ejs

@@ -66,16 +66,6 @@
 							Groups
 						</a>
 					</li>
-					<li class="nav-item">
-						<a class="nav-link" href="/profile"><i class="fa-solid fa-id-badge"></i>
-							Profile
-						</a>
-					</li>
-					<li class="nav-item">
-						<a class="nav-link" href="/api-tokens"><i class="fa-solid fa-code"></i>
-							API Tokens
-						</a>
-					</li>
 				</ul>
 				<div class="form-inline mt-2 mt-md-0">
 					<a id="cl-username" class="navbar-text text-light me-3" href="/profile" style="display: none;">