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* fix(windows): accelerate gpu surface presentation - Render retained binary canvas packets through Direct2D and DirectWrite. - Preserve dirty-region updates and GPU effects with a safe software fallback. - Wire and validate the renderer across supported Windows build paths. Co-authored-by: Omer Shatzberg <131801941+oshtz@users.noreply.github.com> * fix(windows): harden Direct2D presentation * fix(sdk): separate GPU backend request types * fix(windows): honor GPU surface fallback contracts * fix(windows): scale transformed blur kernels * fix: harden Windows GPU surface presentation * fix(windows): harden gpu blur and caption sampling * fix(runtime): bypass packets for software surfaces * fix(windows): preserve precise gpu surface updates * fix(windows): reconcile GPU presenter state * fix: preserve retained canvas resources * fix: preserve Windows canvas packet fidelity --------- Co-authored-by: Omer Shatzberg <131801941+oshtz@users.noreply.github.com>