Implement client heartbeats, improve display formatting, and fix UI alignment.

[chvvkumar]

📋 Overview

This pull request introduces a new SafetyMonitor feature for client heartbeat registration and stale client pruning, enhancing system robustness. It also improves user experience by formatting connection durations for better readability and aligning table column text for consistency.

🔄 Changes by Category

• Features:
  • Implemented client heartbeat registration and stale client pruning within the SafetyMonitor (alpaca/device.py, alpaca/routes/api.py, alpaca/routes/management.py).
  • Added formatting for connection durations, displaying them in dd-hh-mm-ss for improved readability (likely alpaca/routes/api.py or alpaca/routes/management.py).
• Bug Fixes:
  • Corrected table column text alignment to the right for better consistency in the UI (templates/setup.html).
• Tests:
  • Extensively modified test_alpaca.py to cover new features and existing functionality, including a significant reduction in lines of code while adding new tests (tests/test_alpaca.py).

---

_{📊 Analyzed 6 commit(s) | 🕐 Updated: 2026-01-05T04:15:53.340Z | Generated by GitHub Actions}

---