Added
- BGP history graphs on the Routing tab. Each BGP peer now keeps a history of its received prefix count and session up/down state, shown as a chart under the BGP table — the graphs requested in Discussion #39. The chart auto-scales so even the small drift of a full ~1M-prefix feed is visible, marks any session downtime, and covers 6h / 24h / 7d / 30d. The first peer is shown by default; click any BGP row to chart a different peer. Samples are collected every 5 minutes and kept for 90 days by default.