enricobuehlerandClaude Opus 4.8
c3c0115a82
The pen P0 work added a new embeddable C entry point (punktfunk_connection_send_pen) but left ABI_VERSION at 12 — the value 0.18.0 shipped. Per the project's convention (0.18.0 bumped to 12 for the additive cursor channel), additive C-surface growth bumps the ABI so embedders can gate on the new symbol. Regenerated include/punktfunk_core.h via cbindgen (cargo build -p punktfunk-core); WIRE_VERSION is unchanged (pen is capability-gated on HOST_CAP_PEN). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>