admin: add cursor-based pagination to file browser (#7891)

* adjust menu items

* admin: add cursor-based pagination to file browser

- Implement cursor-based pagination using lastFileName parameter
- Add customizable page size selector (20/50/100/200 entries)
- Add compact pagination controls in header and footer
- Remove summary cards for cleaner UI
- Make directory names clickable to return to first page
- Support forward-only navigation (Next button)
- Preserve cursor position when changing page size
- Remove sorting to align with filer's storage order approach

* Update file_browser_templ.go

* admin: remove directory icons from breadcrumbs

* Update file_browser_templ.go

* admin: address PR comments

- Fix fragile EOF check: use io.EOF instead of string comparison
- Cap page size at 200 to prevent potential DoS
- Remove unused helper functions from template
- Use safer templ script for page size selector to prevent XSS

* admin: cleanup redundant first button

* Update file_browser_templ.go

* admin: remove entry counting logic

* admin: remove unused variables in file browser data

* admin: remove unused logic for FirstFileName and HasPrevPage

* admin: remove unused TotalEntries and TotalSize fields

* Update file_browser_data.go

weed/admin/view/layout/layout.templ

@@ -218,6 +218,8 @@ templ Layout(c *gin.Context, content templ.Component) {
                                 </div>
                             }
                         </li>
+                        <!-- Commented out for later -->
+                        <!--
                         <li class="nav-item">
                             <a class="nav-link" href="/metrics">
                                 <i class="fas fa-chart-line me-2"></i>Metrics
@@ -228,10 +230,11 @@ templ Layout(c *gin.Context, content templ.Component) {
                                 <i class="fas fa-file-alt me-2"></i>Logs
                             </a>
                         </li>
+                        -->
                     </ul>
 
                     <h6 class="sidebar-heading px-3 mt-4 mb-1 text-muted">
-                        <span>SYSTEM</span>
+                        <span>MAINTENANCE</span>
                     </h6>
                     <ul class="nav flex-column">
                         <li class="nav-item">
@@ -284,22 +287,22 @@ templ Layout(c *gin.Context, content templ.Component) {
                         <li class="nav-item">
                             if currentPath == "/maintenance" {
                                 <a class="nav-link active" href="/maintenance">
-                                    <i class="fas fa-list me-2"></i>Maintenance Queue
+                                    <i class="fas fa-list me-2"></i>Job Queue
                                 </a>
                             } else {
                                 <a class="nav-link" href="/maintenance">
-                                    <i class="fas fa-list me-2"></i>Maintenance Queue
+                                    <i class="fas fa-list me-2"></i>Job Queue
                                 </a>
                             }
                         </li>
                         <li class="nav-item">
                             if currentPath == "/maintenance/workers" {
                                 <a class="nav-link active" href="/maintenance/workers">
-                                    <i class="fas fa-user-cog me-2"></i>Maintenance Workers
+                                    <i class="fas fa-user-cog me-2"></i>Workers
                                 </a>
                             } else {
                                 <a class="nav-link" href="/maintenance/workers">
-                                    <i class="fas fa-user-cog me-2"></i>Maintenance Workers
+                                    <i class="fas fa-user-cog me-2"></i>Workers
                                 </a>
                             }
                         </li>