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Leonel Rivas
6364281ba0
* feat(cli): add --at-transitions to inspect for sampling at tween boundaries Even spacing samples are structurally blind to sub-second overlap windows at transition seams - a 0.2s caption collision slips between samples by construction (#1380). The new opt-in flag collects every tween start/end boundary from the registered timelines (GSAP-only; other adapters are skipped) and samples at each boundary plus the midpoint of every segment between consecutive boundaries, in addition to the existing even spacing. Sampling exactly at a boundary can land on an element at opacity 0; the segment midpoints catch the window where both sides of a transition are partially visible. Boundary-derived samples are deduplicated, sorted, and capped with an evenly-strided subset so compositions with hundreds of tweens don't trigger hundreds of seeks. Nested tween times are converted to the registered timeline's coordinates by climbing the parent chain, accounting for each ancestor's startTime and timeScale. The JSON output gains a transitionSamples field when the flag is on. Fixes #1380 * fix(cli): sample every transition boundary by default; cap only on explicit request Review follow-up on #1386: the silent cap of 40 contradicted the flag's promise - on a dense timeline the strided subset could skip the exact short boundary window the mode exists to catch, with no indication that samples were omitted. --at-transitions now samples every collected boundary by default. The cap only applies when the new --max-transition-samples flag is passed, and when it truncates, the omitted count is reported both as a console warning and as transitionSamplesDropped in the JSON output.