Add header help icon and in-app docs search

- A ? icon in the top-right header deep-links to the doc most relevant to
  the current page (client-side path mapping, same pattern already used
  for top-nav active-link highlighting -- no server-side "current section"
  local exists to key off of instead). Falls back to the docs index.
- GET /docs/search does a plain line-substring search over the existing
  allowlisted doc set. No new dependency, stays usable with no internet
  access.

Bumps to v1.1.10.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KDEx8ghuZR61pqPXc6da9C

nodejs/views/top.ejs

@@ -64,6 +64,9 @@
   	      </li>
   	    </ul>
   	    <div class="form-inline mt-2 mt-md-0">
+  	      <a id="cl-help" class="nav-link text-light me-3" href="/docs" title="Help">
+  	        <i class="fa-solid fa-circle-question"></i>
+  	      </a>
   	      <a id="cl-username" class="navbar-text text-light me-3" href="/" style="display: none;">
   	        <i class="fa-solid fa-user me-1"></i><span id="cl-username-text"></span>
   	      </a>
@@ -98,6 +101,19 @@
   	    sessionStorage.setItem('update-banner-dismissed', '1');
   	  }
 
+  	  // Deep-link the header help icon to whichever doc is most relevant to
+  	  // the current page. No server-side "current section" local exists (every
+  	  // res.render() call shares one values object, see routes/index.js), so
+  	  // this follows the same client-side path-matching convention already
+  	  // used for the top-nav active-link highlighting just below. Unmapped
+  	  // pages fall back to the docs index (already /docs, the anchor's default).
+  	  var HELP_DOCS_BY_PATH = {
+  	    '/users': 'ldap',
+  	    '/groups': 'ldap',
+  	    '/integrations': 'ldap',
+  	    '/oauth/authorize': 'oauth',
+  	  };
+
   	  $(document).ready(async function(){
 
   	    // Set the correct link to active in the top nav bar
@@ -109,6 +125,12 @@
   	      }
   	    })
 
+  	    // /users/:uid (profile pages) should still map like /users.
+  	    var path = window.location.pathname.toLocaleLowerCase();
+  	    var helpSlug = HELP_DOCS_BY_PATH[path] ||
+  	      (path.indexOf('/users/') === 0 ? HELP_DOCS_BY_PATH['/users'] : null);
+  	    if(helpSlug) $('#cl-help').attr('href', '/docs/' + helpSlug);
+
   	    // Set the correct login/logout button, and reveal the current user's
   	    // name (linking to their profile) once we know who they are.
   	    var me = await app.auth.isLoggedIn();