Rebuild beta and campaign file activations

src/routes/betas/[id]/+page.svelte

@@ -297,7 +297,7 @@
         const restarts =
             test?.plan.rollbackRestart === 'manual'
                 ? 'Resume the rollback campaign when ready; files stay unchanged until safety checks pass.'
-                : 'Files are restored just before restarting, after safety checks pass.';
+                : 'Servers rebuild with the original files after safety checks pass.';
         if (
             !(await confirmAction({
                 title: reject ? 'Reject beta?' : 'Roll back beta?',
@@ -557,7 +557,7 @@
                                         ><td colspan="4">
                                             <p class="muted">
                                                 Files {server.deployed_at ? 'installed' : 'pending'} ·
-                                                Restart {server.restarted_at
+                                                Activation {server.restarted_at
                                                     ? 'submitted'
                                                     : 'pending'}{#if beta.wait_for_health}
                                                     · Health {server.healthy_at
@@ -734,10 +734,10 @@
         </p>
         <p>
             Confirming creates a campaign and queues the file changes. Each server waits until empty
-            and restart capacity is available, then captures rollback snapshots, installs its files,
-            and restarts. Tested servers keep their pre-beta snapshots and only need another
-            activation if their configuration changed or earlier queued work could replace the
-            tested files. Eligibility follows each file's current scope.
+            and rebuild capacity is available, then captures rollback snapshots and rebuilds with
+            its files. Tested servers keep their pre-beta snapshots and only need another activation
+            if their configuration changed or earlier queued work could replace the tested files.
+            Eligibility follows each file's current scope.
         </p>
         <p class="muted">
             Reviewed {$timeFormat.dateTime(preview.createdAt)}. If targets, versions, or composed
@@ -756,7 +756,7 @@
                                 <ServerIdentity {name} /><span
                                     >{preview.servers.find((server) => server.name === name)?.tested
                                         ? 'Already tested'
-                                        : 'Additional target · restart when empty'}</span
+                                        : 'Additional target · rebuild when empty'}</span
                                 >
                             </li>{/each}
                     </ul>

src/routes/betas/new/+page.svelte

@@ -989,12 +989,12 @@
                               ? 'Failed checks pause testing.'
                               : 'Failed checks hold the beta for review.'}
                         {testPlan.rollbackRestart === 'when-empty'
-                            ? 'Rollback restarts wait for empty servers.'
-                            : 'Rollback restores files; restart servers manually.'}
+                            ? 'Rollback rebuilds wait for empty servers.'
+                            : 'Rollback is held until you resume its campaign.'}
                     </p>
                     <p>
                         Starting installs each selected version only on matching test servers and
-                        restarts them when empty. Waiting, pausing, and retrying use the original
+                        rebuilds them when empty. Waiting, pausing, and retrying use the original
                         testing window. Promotion is a separate reviewed action after testing.
                     </p>
                 </section>{/if}