fix: Bitget WS keepalive — send text ping, not WebSocket PingMessage
Bitget v2 WS requires a text message "ping" every 30s, not a WebSocket PingMessage control frame (opcode 0x9). Using the wrong ping type caused a silent failure: connection stays up and subscription succeeds, but NO ticker data is pushed — zero errors, zero reconnection logs. Changes: - connector.go: Add TextPing bool flag, send text 'ping' when set - bitget.go: Set TextPing=true, handle text 'pong', add debug logging - scanner.go: Expand to 179 overlapping Bitget+HL coins
This commit is contained in: