feat: WMT client versioning, release management and force-update playbook

- api/wmt.py: add GET /api/wmt/client/version and GET /api/wmt/client/download endpoints; rewrite submit_update_request with dedup logic
- web/wmt.py: add releases, releases_upload, releases_delete, releases_build routes; build-from-folder excludes hidden/data/venv/pyc files
- web/main.py: admin per-device delete route; clear-device-logs route; pass devices list to admin template
- templates/wmt/releases.html: new release management page (current release info, upload form, build-from-folder card)
- templates/admin.html: replace nuclear clear-devices with clear-logs + per-device delete table
- templates/base.html: add Client Releases nav link in WMT sidebar section
- templates/ansible/execute.html: add Update WMT Code playbook card
- ansible/playbooks/update_wmt_code.yml: rsync WMT_project to clients excluding data/; backs up app.py; restarts wmt service
- ansible_service.py: register update_wmt_code description
- .gitignore: whitelist update_wmt_code.yml

templates/ansible/execute.html

@@ -76,7 +76,7 @@
                             </div>
                         </div>
                     </div>
-                    <div class="card playbook-card mb-3" data-name="distribute_ssh_keys" onclick="selectPlaybook('distribute_ssh_keys')">
+                    <div class="card playbook-card mb-2" data-name="distribute_ssh_keys" onclick="selectPlaybook('distribute_ssh_keys')">
                         <div class="card-body py-2">
                             <div class="d-flex justify-content-between align-items-start">
                                 <div>
@@ -87,6 +87,17 @@
                             </div>
                         </div>
                     </div>
+                    <div class="card playbook-card mb-3" data-name="update_wmt_code" onclick="selectPlaybook('update_wmt_code')">
+                        <div class="card-body py-2">
+                            <div class="d-flex justify-content-between align-items-start">
+                                <div>
+                                    <h6 class="mb-1 text-danger"><i class="fas fa-code-branch me-1"></i>Update WMT Code</h6>
+                                    <p class="small text-muted mb-0">Force-push latest WMT release to clients that missed auto-update (preserves data/)</p>
+                                </div>
+                                <span class="badge bg-danger ms-2 flex-shrink-0">Built-in</span>
+                            </div>
+                        </div>
+                    </div>
 
                     <h6 class="text-muted fw-bold mb-2 small text-uppercase">Custom Playbooks</h6>
                     <select class="form-select" id="customPlaybook">