AutomaticEntryCandidatesWithFallbacks completes the uncapped catalogue
with tier-3 fallbacks after the preferred points: native arc midpoints,
the eight compass points of a whole circle (a pure-circle contour is now
usable instead of refusing), near-convex-corner points on each incident
straight edge back from the corner by 2 x the applicable lead-in length
using the emitter's own SelectLeadIn semantics (non-length lead-in styles
contribute 0 and the fallback is omitted, never approximated), and the
exact target-facing closest point toward the caller's look-ahead. Every
fallback runs through the same reflex/cusp exclusion — a raw closest
point or an inset landing on a forbidden inside corner is dropped — and
the same geometric duplicate merge; short edges omit an out-of-segment
inset by projection parameter instead of extrapolating. No ranking and
no lead-safety verdict yet.
aj
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