chore: release v0.8.128

[miguel-heygen]

Release v0.8.128. Version bumps and changelog only.

Splitting, converting or editing a tween no longer deletes keyframes Studio cannot read. Dragging or resizing many selected clips now saves in one write per file.

No visible change

This PR only bumps versions and adds release notes.

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Project	Status	Preview	Updated
hyperframes	🟢 Ready	View Preview	Oct 5, 2026, 8:01 AM

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[github-actions]

Edit accuracy: accurate 2040 (base branch 2040), smooth 1523 of those

The gate passes.
Smoothness is reported in the artifact, not gated. A case fails only if it fails 2 of 3 runs.

Quarantined, measured but not gated (0)

Unstable (1)

• crop-none-px-r0-root-z100: tracking 0.04, pressJump 0, drop 40.03, reload 40.03, render 39.98, renderKey -, undo true, teleport true / tracking 0.04, pressJump 0, drop 0.06, reload 0.06, render 0.03, renderKey -, undo true, teleport true / tracking 0.04, pressJump 0, drop 0.06, reload 0.06, render 0.03, renderKey -, undo true, teleport true