Polish: uppercase all admin view button text

- AuditLogView.php: FILTER, RESET
- UserActivityView.php: APPLY, RESET
- ApiKeysView.php: GENERATE KEY, COPY, REVOKE
- WorkflowDesignerView.php: + NEW TRANSITION, EDIT, DELETE, SAVE, CANCEL
- CustomFieldsView.php: + NEW FIELD, EDIT, DELETE, SAVE, CANCEL
- TemplatesView.php: + NEW TEMPLATE, EDIT, DELETE, SAVE, CANCEL
- RecurringTicketsView.php: + NEW RECURRING TICKET, EDIT, DISABLE/ENABLE, DELETE, SAVE, CANCEL

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

views/admin/ApiKeysView.php

@@ -61,7 +61,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
                         </select>
                     </div>
                     <div>
-                        <button type="submit" class="btn">Generate Key</button>
+                        <button type="submit" class="btn">GENERATE KEY</button>
                     </div>
                 </form>
             </div>
@@ -75,7 +75,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
                 <div style="display: flex; gap: 0.5rem; align-items: center;">
                     <input type="text" id="newKeyValue" readonly
                         style="flex: 1; padding: 0.75rem; font-family: var(--font-mono); font-size: 0.85rem; background: var(--bg-primary); border: 2px solid var(--terminal-green); color: var(--terminal-green);">
-                    <button data-action="copy-api-key" class="btn" title="Copy to clipboard">Copy</button>
+                    <button data-action="copy-api-key" class="btn" title="Copy to clipboard">COPY</button>
                 </div>
             </div>