feat(api): add live status tracking for speakers and BGP sessions

- Introduced new schemas for `SpeakerLiveStatus`, `BgpSessionLive`, and `LiveSpeakerPoll` in OpenAPI documentation to support live status queries.
- Enhanced the `/v1/speakers` endpoint to include a `live` query parameter, allowing retrieval of real-time speaker and BGP status.
- Updated the HTTP API to collect and return live status data for speakers, improving monitoring capabilities.
- Modified frontend components to display live status information, enhancing user visibility into speaker health and BGP session states.
- Added a new endpoint `/v1/bird/status` for retrieving the local BIRD status, further enriching the network monitoring features.

internal/httpapi/speakers_live_test.go

@@ -0,0 +1,74 @@
+package httpapi
+
+import (
+	"testing"
+
+	"evobgp/internal/birdfmt"
+	"evobgp/internal/nodedispatch"
+	"evobgp/internal/store"
+)
+
+func TestCountBGPSessions(t *testing.T) {
+	total, est := countBGPSessions([]birdfmt.BGPSession{
+		{Name: "p1", State: "Established"},
+		{Name: "p2", State: "Idle"},
+		{Name: "p3", State: "established"},
+	})
+	if total != 3 || est != 2 {
+		t.Fatalf("total=%d established=%d", total, est)
+	}
+}
+
+func TestSpeakerLiveStatusJSON_masterUsesBirdPoll(t *testing.T) {
+	sp := &store.Speaker{ID: "m1", Role: "master", Endpoint: "https://cp.example"}
+	view := speakerBGPLive{
+		SpeakerID: "m1",
+		Label:     "CP · cp.example",
+		Sessions: []birdfmt.BGPSession{
+			{Name: "evobgp_peer_x", State: "Established"},
+		},
+	}
+	m := speakerLiveStatusJSON(sp, view, nil)
+	if m["agent_ok"] != true || m["bgp_established"] != 1 || m["bgp_sessions_total"] != 1 {
+		t.Fatalf("got %#v", m)
+	}
+}
+
+func TestSpeakerLiveStatusJSON_replicaWithHealth(t *testing.T) {
+	sp := &store.Speaker{
+		ID:       "r1",
+		Role:     "replica",
+		Endpoint: "https://node.example",
+		MetaJSON: `{"agent_domain":"node.example","agent_secret":"s"}`,
+	}
+	view := speakerBGPLive{
+		SpeakerID: "r1",
+		Label:     "node.example",
+		Sessions:  []birdfmt.BGPSession{{Name: "p", State: "Idle"}},
+	}
+	health := &nodedispatch.AgentHealthResult{
+		OK:                    true,
+		LastSyncAt:            "2026-05-21T12:00:00Z",
+		LastAppliedRevisionID: "rev-1",
+	}
+	m := speakerLiveStatusJSON(sp, view, health)
+	if m["agent_ok"] != true || m["agent_last_sync_at"] != "2026-05-21T12:00:00Z" {
+		t.Fatalf("got %#v", m)
+	}
+	if m["bgp_established"] != 0 || m["bgp_poll_ok"] != true {
+		t.Fatalf("bgp fields: %#v", m)
+	}
+}
+
+func TestSpeakerLiveStatusJSON_pollError(t *testing.T) {
+	sp := &store.Speaker{ID: "r1", Role: "replica", MetaJSON: `{"agent_domain":"x.example"}`}
+	view := speakerBGPLive{SpeakerID: "r1", Label: "x.example", Error: "HTTP 503"}
+	health := &nodedispatch.AgentHealthResult{OK: false, Error: "timeout"}
+	m := speakerLiveStatusJSON(sp, view, health)
+	if m["bgp_poll_ok"] != false || m["bgp_poll_error"] != "HTTP 503" {
+		t.Fatalf("got %#v", m)
+	}
+	if m["agent_ok"] != false {
+		t.Fatalf("agent_ok: %#v", m)
+	}
+}