Filter nonfinite calibration references

[FlorianPfaff]

Summary

• Ignore non-finite reference timestamps and reference-value rows before timestamp interpolation.
• Make nearest-time matching consider only finite reference timestamps while preserving original indices.
• Apply the same usable-reference filtering to bias calibration examples.
• Add regression coverage for non-finite reference rows in time-offset and bias calibration.

Rationale

Calibration data can contain dropped samples encoded as NaN/inf timestamps or values. The previous implementation sorted these rows into the reference trajectory and let them participate in interpolation or nearest-neighbor matching, which could silently invalidate good query samples or choose unusable reference rows. The patch filters unusable reference rows first and fails only when too few finite rows remain for interpolation.

Validation

• Added focused tests in tests/calibration/test_time_offset_bias.py.
• Full local pytest could not be run because this execution container cannot resolve github.com; repository CI should run the focused calibration tests and the full suite.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	49.36s
✅ JSON	prettier	7	0	0	0	1.1s
✅ JSON	v8r	7		0	0	4.73s
✅ MARKDOWN	markdownlint	66	0	0	0	1.92s
✅ MARKDOWN	markdown-table-formatter	66	0	0	0	0.68s
✅ PYTHON	black	765	3	0	0	41.69s
✅ PYTHON	isort	765	3	0	0	8.23s
✅ REPOSITORY	checkov	yes		no	no	47.61s
✅ REPOSITORY	gitleaks	yes		no	no	11.98s
✅ REPOSITORY	git_diff	yes		no	no	0.07s
✅ REPOSITORY	secretlint	yes		no	no	22.87s
✅ REPOSITORY	syft	yes		no	no	5.38s
✅ REPOSITORY	trivy-sbom	yes		no	no	6.85s
✅ REPOSITORY	trufflehog	yes		no	no	24.46s
✅ YAML	prettier	11	0	0	0	0.77s
✅ YAML	v8r	11		0	0	11.61s
✅ YAML	yamllint	11		0	0	0.6s

Notices

📣 MegaLinter 9.5.0 is out! Discover the new features and security recommendations in the release announcement. (Skip this info by defining SECURITY_SUGGESTIONS: false)

See detailed reports in MegaLinter artifacts

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@9.5.0 --custom-flavor-setup --custom-flavor-linters PYTHON_BLACK,PYTHON_ISORT,COPYPASTE_JSCPD,JSON_V8R,JSON_PRETTIER,MARKDOWN_MARKDOWNLINT,MARKDOWN_MARKDOWN_TABLE_FORMATTER,REPOSITORY_CHECKOV,REPOSITORY_GIT_DIFF,REPOSITORY_GITLEAKS,REPOSITORY_SECRETLINT,REPOSITORY_SYFT,REPOSITORY_TRIVY_SBOM,REPOSITORY_TRUFFLEHOG,YAML_PRETTIER,YAML_YAMLLINT,YAML_V8R

Show us your support by starring ⭐ the repository