feat(api): update mikrotik-install script for enhanced packet tracking

- Updated the `mikrotik-install.rsc` script to include cumulative packet tracking for dropped and accepted packets, improving visibility into firewall performance.
- Adjusted the JSON report structure to reflect the new packet statistics, ensuring accurate data is sent during synchronization.
- Enhanced logging to provide detailed insights into the synchronization process, including packet counts for better monitoring.

These changes improve the overall functionality and monitoring capabilities of the agent installation and synchronization process.

docs/agents.md

@@ -70,6 +70,7 @@ Install RSC:
 3. Scheduler `evofw-sync` каждую минуту: `GET /v1/agent/policy` (JSON) → rebuild address-list + toggle default. Не использует `/import` огромного `.rsc` (на больших списках часто падает молча).
 
 Лог: `/log print where message~"evofw"`. Ручной sync: `/system script run evofw-sync`.
+Traffic ↓/↑ в UI — сумма `packets` с filter-правил `evofw-deny-*` / `evofw-allow-*` / `evofw-default-drop-*` (накопительно, пока правила не пересозданы re-install).
 
 **Default action** задаётся на **агенте** (`default_action: accept | drop`):