v0.7.3

Changed

• Event-driven element sources no longer use the off-screen viewport gate.
  range, field, field-state, form-state, select, color-input, and
  img now run ungated (gate: false). They only write in response to user
  interaction or an image load — neither of which can happen while the element
  is off screen — so gating them only added an IntersectionObserver
  subscription plus a tear-down / re-seed cycle on every scroll in and out, for
  no benefit. Ungated, they seed their values once at bind time (so a var()
  resolves immediately, even for an element below the fold) and never tear down.
  Continuously-sampling element sources (size, pointer-local, media,
  img-color, video-color) stay gated, where pausing off screen is a real
  saving. Additive: off-screen elements that previously had no props until they
  scrolled in now carry their seeded values from the start.

Fixed

• field-state no longer loses its latched interaction history when its
  element scrolls off screen and back. Because it was viewport-gated,
  scrolling the field out of view tore the source down and scrolling back
  re-ran it — re-snapshotting each field's "initial" value from the current
  (already-edited) value and clearing the dirty / touched / changed latches, so
  a field would report pristine again. Now that it runs ungated (above), the
  snapshot and latches are taken once and persist for the binding's life.
• The shared frame loop no longer keeps requestAnimationFrame scheduled when
  no flush is owed. Under a liveHz cadence cap a throttled frame rescheduled
  unconditionally; it now reschedules only while a continuous sampler is
  registered or a flush is still pending, so a one-shot write can't leave rAF
  spinning after its work is done. Any running rAF can demote compositor-driven
  CSS animations, so the loop is kept as quiet as possible — it idles the moment
  nothing needs it (regression test added).
• writer.forget() no longer leaves an empty entry that makes a queued frame
  flush nothing. When a source's disposal raced a same-frame write, the
  emptied target lingered in the pending map past the flush fast-path's size
  check; it is now removed so the frame is a true no-op.

Performance

• Removed a per-frame array allocation from the loop's sampler dispatch
  ([...frameFns] → direct Set iteration). Samplers only ever remove
  themselves, which Set iteration handles safely, so the defensive copy was
  unnecessary on the one path that runs every frame.
• motion and orientation now attach through the shared, ref-counted
  onWindow helper instead of raw window.addEventListener, matching every
  other window-driven source — one real listener per event type for the page.