test: remove tests that do not exercise app code

Remove tests that copy app logic into the test, grep PHP source as
text, only check literals, constants, class_exists or PHP built-ins,
duplicate other tests, or are always skipped. Keep source checks that
guard security and authorization rules.

Rename a duplicate Pest helper so the full suite loads, drop the
missing v5/Browser path, and remove the CLAUDE.md symlink in favor of
AGENTS.md. Correct AGENTS.md: Dusk is not installed and the upgrade
script is scripts/upgrade.sh.

tests/Unit/DeployKeyDedicatedPathTest.php

@@ -66,16 +66,6 @@ it('skips logging the docker deploy key materialization command before ls-remote
         ->and(substr($source, $commandPosition, 200))->toContain("'skip_command_log' => true");
 });
 
-it('supports skipping command log entries without adding a hidden command entry', function () {
-    $source = file_get_contents(__DIR__.'/../../app/Traits/ExecuteRemoteCommand.php');
-
-    expect($source)
-        ->toContain('$skip_command_log = data_get($single_command, \'skip_command_log\', false);')
-        ->toContain('if ($command_hidden && ! $skip_command_log && isset($this->application_deployment_queue))')
-        ->toContain('use ($command, $hidden, $customType, $append, $command_hidden, $skip_command_log)')
-        ->toContain('\'command\' => $skip_command_log || $command_hidden ? null : $this->redact_sensitive_info($command),');
-});
-
 it('writes a deploy key to a per-deployment path and cleans it up for ls-remote on the host', function () use ($keyPath) {
     $privateKey = Mockery::mock(PrivateKey::class)->makePartial();
     $privateKey->shouldReceive('getAttribute')->with('private_key')->andReturn('fake-private-key');