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+- Fixed SmallWebRTC data channel silently stalling on networks with a 1280-byte MTU (IPv6, Tailscale overlays, many consumer VPNs). aiortc's default SCTP chunk size of 1200 bytes produces ~1305-byte UDP datagrams after headers, which the kernel rejects with EMSGSIZE; aiortc has no path-MTU discovery so it retransmits forever at the same oversized size. The chunk size is now clamped to 1100 bytes (~1205-byte datagrams, ~75 bytes of slack). Override with `PIPECAT_SCTP_MAX_CHUNK_SIZE` if your path MTU requires a different value.