fix(webxr): replay without live input and preserve alignment

[yanziz-nvidia]

Hand and controller JSON replay now advances without physical hands or connected controllers. Recorded gaps and controls are preserved; older files without controller profiles use generic mapping. An active XR/CloudXR session is still required.

Add explicit cross-session calibration, preserve alignment across known origin resets, and align replay traces. Unknown resets pause calibrated replay for recalibration; recording stops on origin changes.

Validation: 139 tests, production build, lint, pre-commit, and CloudXR 6.3 SDK harnesses passed (network transport stubbed). Physical benchmark validation is pending. Full typechecking still reports the existing PerformanceCanvasImage.tsx:260 ref-type error.

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