forked from Ports/goldeneye-pc-port
Adds a GE_D245V env-gated probe dumping the water fan's raw S/T span each call, and a GE_D245_FIXEDSHIFT env var (skyPortForceFanShift) that forces a constant tc-shift k instead of the per-frame adaptive pick. Both are diagnostic/opt-in only -- default behavior is unchanged (verify.sh frigate/"surface 2" PASS with the env vars unset). Headless GE_INPUTSCRIPT rotation on Frigate found k genuinely flips (kT 4->3) during ordinary view turning, which the original single-frame D227V trace never caught -- new evidence for why the M-116 allowShift=TRUE fix didn't hold up live. The fixed-k candidate is NOT the default; it needs a live A/B (unset vs 3/4/5) to know if it actually looks better, not another blind ship. Claude-Session: https://claude.ai/code/session_01KwZViAFaXua3PKgHHjNgvi