<?php
return [
    'db_dsn'  => 'mysql:host=localhost;dbname=move_detect;charset=utf8mb4',
    'db_user' => 'CHANGEME',
    'db_pass' => 'CHANGEME',
    'snapshot_dir' => __DIR__ . '/storage/snapshots',
    // Every key App\Config reads is listed, defaults included. They all have `?? default`
    // fallbacks, so an omitted key is silently absent rather than an error — an operator
    // who never sees it here cannot know the knob exists.
    'nonce_ttl' => 86400,
    'timestamp_window' => 300,
    'rate_limit_per_min' => 60,
    'ingest_ip_rate_limit_per_min' => 300,
    // PIPA retention: worker snapshots are purged after this many days (0 disables).
    'snapshot_retention_days' => 7,
    'event_retention_days' => 0,   // 0 = 이벤트 기록 영구 보존 (안전사고 기록; 스냅샷만 만료)
];