chore(v5): archive V5 implementation and remove runtime integration

Move V5 source, migrations, UI, scripts, and tests into documentation, then remove V5 routes, models, jobs, configuration, dependencies, and application hooks.

app/Models/Team.php

@@ -4,12 +4,10 @@ namespace App\Models;
 
 use App\Actions\User\RevokeUserTeamTokens;
 use App\Events\ServerReachabilityChanged;
-use App\Jobs\V5TeardownTeamJob;
 use App\Notifications\Channels\SendsDiscord;
 use App\Notifications\Channels\SendsEmail;
 use App\Notifications\Channels\SendsPushover;
 use App\Notifications\Channels\SendsSlack;
-use App\Support\V5\V5Feature;
 use App\Traits\HasNotificationSettings;
 use App\Traits\HasSafeStringAttribute;
 use Illuminate\Database\Eloquent\Casts\Attribute;
@@ -81,20 +79,6 @@ class Team extends Model implements SendsDiscord, SendsEmail, SendsPushover, Sen
         });
 
         static::deleting(function (Team $team) {
-            // Best-effort on-host teardown of this team's v5 resources BEFORE the
-            // DB cascade removes the servers/applications/private keys. Captured
-            // synchronously into a queued job so an unreachable host cannot block
-            // or fail the team deletion (see V5TeardownTeamJob). Guarded so a v5
-            // teardown problem never breaks v4 team deletion. This is disabled
-            // with the rest of v5 outside development environments.
-            if (V5Feature::enabled()) {
-                try {
-                    V5TeardownTeamJob::dispatchForTeam($team);
-                } catch (\Throwable $exception) {
-                    report($exception);
-                }
-            }
-
             RevokeUserTeamTokens::forTeam($team->id);
 
             foreach ($team->privateKeys as $key) {