refactor: simplify remote process chain and harden ActivityMonitor

- Inline PrepareCoolifyTask and CoolifyTaskArgs into remote_process(),
  removing two single-consumer abstraction layers
- Add #[Locked] attribute to ActivityMonitor $activityId property
- Add team ownership verification in ActivityMonitor.hydrateActivity()
  with server_uuid fallback and fail-closed default
- Store team_id in activity properties for proper scoping
- Update CLAUDE.md to remove stale reference
- Add comprehensive tests for activity monitor authorization

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

app/Actions/CoolifyTask/PrepareCoolifyTask.php

@@ -1,54 +0,0 @@
-<?php
-
-namespace App\Actions\CoolifyTask;
-
-use App\Data\CoolifyTaskArgs;
-use App\Jobs\CoolifyTask;
-use Spatie\Activitylog\Models\Activity;
-
-/**
- * The initial step to run a `CoolifyTask`: a remote SSH process
- * with monitoring/tracking/trace feature. Such thing is made
- * possible using an Activity model and some attributes.
- */
-class PrepareCoolifyTask
-{
-    protected Activity $activity;
-
-    protected CoolifyTaskArgs $remoteProcessArgs;
-
-    public function __construct(CoolifyTaskArgs $remoteProcessArgs)
-    {
-        $this->remoteProcessArgs = $remoteProcessArgs;
-
-        if ($remoteProcessArgs->model) {
-            $properties = $remoteProcessArgs->toArray();
-            unset($properties['model']);
-
-            $this->activity = activity()
-                ->withProperties($properties)
-                ->performedOn($remoteProcessArgs->model)
-                ->event($remoteProcessArgs->type)
-                ->log('[]');
-        } else {
-            $this->activity = activity()
-                ->withProperties($remoteProcessArgs->toArray())
-                ->event($remoteProcessArgs->type)
-                ->log('[]');
-        }
-    }
-
-    public function __invoke(): Activity
-    {
-        $job = new CoolifyTask(
-            activity: $this->activity,
-            ignore_errors: $this->remoteProcessArgs->ignore_errors,
-            call_event_on_finish: $this->remoteProcessArgs->call_event_on_finish,
-            call_event_data: $this->remoteProcessArgs->call_event_data,
-        );
-        dispatch($job);
-        $this->activity->refresh();
-
-        return $this->activity;
-    }
-}