A persisted float rect saved at the viewport edge, or on a larger
monitor, passes clampFloatRect (which only keeps 48px reachable so a
live drag may deliberately hang off an edge) and renders the panel as
a 48px sliver on every open. Add containFloatRect, which snaps the
whole window inside the viewport, and an AgentSheet effect that
validates the persisted rect on sheet mount and on viewport resize
and persists the corrected position. The rect is read through a ref
so drag commits do not re-trigger containment: parking the window
half off-screen still works within a session. The live drag path and
clampFloatRect are unchanged, and containFloatRect's output is always
a fixpoint of clampFloatRect, so the render clamp stays a no-op.
Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Jakob Wennberg
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