Part of #97. Subsumes #30 (B5).
Replace the raw/tap prior-fragment base with a synthetic trail through the composing prefix's key centers, densified by distance (~keyWidth/4 step). For a tap prefix, synthesize a small "arrival" micro-stroke around the key center instead of a lone point (the #30/B5 idea). Keep current re-timing initially.
Behind a mode constant/debug pref so RAW_RETIMED stays comparable.
Acceptance: golden-corpus (#21) A/B — tap→swipe top-1 improves; no single-swipe / silo regression.
Part of #97. Subsumes #30 (B5).
Replace the raw/tap prior-fragment base with a synthetic trail through the composing prefix's key centers, densified by distance (~keyWidth/4 step). For a tap prefix, synthesize a small "arrival" micro-stroke around the key center instead of a lone point (the #30/B5 idea). Keep current re-timing initially.
Behind a mode constant/debug pref so
RAW_RETIMEDstays comparable.Acceptance: golden-corpus (#21) A/B — tap→swipe top-1 improves; no single-swipe /
siloregression.