Fix time-offset input shape validation

[FlorianPfaff]

Summary

• validate measurement_values rank before time-offset error evaluation
• reject measurement_times_s / measurement_values row-count mismatches with an explicit ValueError
• add regression tests for mismatched lengths and higher-rank measurements

Validation

• compared branch against main: 2 commits ahead, 0 behind
• not run locally: this execution environment cannot resolve github.com to clone/install the repository

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	37.97s
✅ PYTHON	black	2	1	0	0	2.62s
✅ PYTHON	isort	2	1	0	0	0.54s
✅ REPOSITORY	checkov	yes		no	no	33.82s
✅ REPOSITORY	gitleaks	yes		no	no	17.64s
✅ REPOSITORY	git_diff	yes		no	no	0.06s
✅ REPOSITORY	secretlint	yes		no	no	14.61s
✅ REPOSITORY	syft	yes		no	no	2.15s
✅ REPOSITORY	trivy-sbom	yes		no	no	4.0s
✅ REPOSITORY	trufflehog	yes		no	no	23.85s

Notices

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