Tell harness agent capabilities

<?php
require 'examples/boot.php';
require_once dirname(__DIR__).'/Support.php';

use Cognesy\Tell\Capability\AskUser\TellAnswerQueue;
use Cognesy\Tell\Tell;
use Cognesy\Tell\TellRequest;
use Cognesy\Tell\Tool\TellToolRequest;

$project = TellHarnessExample::project();
file_put_contents($project.'/evidence.txt', "release evidence\n");

try {
    $tell = Tell::open($project);
    $catalogue = $tell->catalogue()->connections();
    $direct = $tell->tools()->dispatch(
        TellToolRequest::invoke('read_file', ['path' => 'evidence.txt']),
    );

    echo 'Known connections: '.count($catalogue['connections'])."\n";
    echo 'Direct tool output: '.$direct->data['text'];
    assert($direct->success, 'Expected the direct read_file tool call to succeed.');
    assert($direct->execution()['inference'] === false);

    // Construct a non-interactive run only when an enabled agent may ask for
    // a decision. Answers are consumed once and are redacted from event output.
    $request = TellRequest::prompt('Continue only after confirming release intent.')
        ->withAnswers(new TellAnswerQueue([
            ['id' => 'release', 'value' => 'approve', 'source' => 'cli'],
        ]));

    // A durable agent run may delegate one enabled child agent. Tell persists
    // that child on an inspectable `agent-*` branch; use branches()->list()
    // after the run to inspect the durable child result.
} finally {
    TellHarnessExample::remove($project);
}