- Add nid-server.py: Python web server (stdlib) with live walk API,
SSE progress streaming, and clear/archive endpoints
- Add snmp-walk.sh: CLI wrapper for walk pipeline with .env config
- Add walk control card to viewer UI with IP input, mode selector,
walk/clear buttons, and real-time progress bar
- Make cards collapsible, add management IP to header
- Add dynamic port type rendering (SFP vs RJ45 from connector table)
- Add SFF-8024 connector type labels for SFP detail cards
- Fix ifOperStatus numeric vs text comparisons for live walk data
- Add alarm config-only fallback when device lacks status table
- Use snmpbulkwalk for faster walks with parallel subtree execution
- Add .env/.env.example for secrets and config, gitignore walks/
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>