feat(api): enhance peer session tracking and error handling

- Added `PollError` field to `peerSessionOnSpeaker` and `liveSpeakerPoll` types to capture polling errors for speakers.
- Updated `matchPeerOnSpeakers` function to handle polling errors and adjust session state reporting.
- Modified frontend components to display polling error messages alongside session states, improving user visibility into peer connection statuses.
- Enhanced API response structure to include live speaker polling information, facilitating better monitoring of speaker health.

internal/birdfmt/bgp_sessions.go

@@ -19,29 +19,35 @@ func ParseBGPSessions(output string) []BGPSession {
 		line := strings.TrimRight(raw, "\r")
 		trim := strings.TrimSpace(line)
 		if trim == "" {
+			cur = nil
 			continue
 		}
 		low := strings.ToLower(trim)
 		if strings.HasPrefix(low, "bird ") || strings.HasPrefix(low, "name ") || strings.HasPrefix(low, "table ") {
 			continue
 		}
-		if !strings.HasPrefix(line, " ") && !strings.HasPrefix(line, "\t") && isBGPProtocolSummaryRow(trim) {
-			fields := strings.Fields(trim)
-			state := extractBGPSessionStateLine(trim)
-			if state == "" && len(fields) >= 4 {
-				state = fields[3]
+		if !strings.HasPrefix(line, " ") && !strings.HasPrefix(line, "\t") {
+			if isBGPProtocolSummaryRow(trim) {
+				fields := strings.Fields(trim)
+				state := extractBGPSessionStateLine(trim)
+				if state == "" && len(fields) >= 4 {
+					state = fields[3]
+				}
+				out = append(out, BGPSession{Name: fields[0], State: state})
+				cur = &out[len(out)-1]
+			} else {
+				cur = nil
 			}
-			cur = &BGPSession{Name: fields[0], State: state}
-			out = append(out, *cur)
-			cur = &out[len(out)-1]
 			continue
 		}
 		if cur == nil {
 			continue
 		}
-		const neighborPrefix = "Neighbor address:"
-		if idx := strings.Index(trim, neighborPrefix); idx >= 0 {
-			cur.Neighbor = strings.TrimSpace(trim[idx+len(neighborPrefix):])
+		for _, prefix := range []string{"Neighbor address:", "Neighbor Address:", "Neighbor:"} {
+			if idx := strings.Index(trim, prefix); idx >= 0 {
+				cur.Neighbor = strings.TrimSpace(trim[idx+len(prefix):])
+				break
+			}
 		}
 	}
 	return out