pre-commit: update Black to 26.5.1

[agsaru]

PR Type

• Bug fix
• New feature
• Core Runtime change (higher bar -- see CONTRIBUTING.md)
• Docs / tooling
• Refactoring

Summary

• Update Black repository URL to psf/black
• Bump Black revision to 26.5.1
• Remove outdated click<8.1.0 dependency pin
• Added--fast flag to bypass AST safety checks on older runtimes
• Added py315 to target versions new black version supports python 3.15 version

[Copilot]

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[greptile-apps]

Greptile Summary

This PR updates the Black pre-commit hook from 25.12.0 to 26.5.1, switching the repo URL to the canonical psf/black, removing the now-unnecessary click<8.1.0 pin, and adding py315 as a target version. The remaining 22 files are purely mechanical Black reformatting outputs (removing extra blank lines after import blocks and collapsing multi-line string-literal calls to inline openings).

• .pre-commit-config.yaml: bumps Black to 26.5.1, canonical repo URL, drops stale click pin, adds py315 target.
• All other changed files: no logic changes — only whitespace/blank-line adjustments produced by running the new formatter.

Confidence Score: 5/5

Safe to merge — the only substantive change is the Black version bump in pre-commit config; all other edits are mechanical formatter output with no logic changes.

The pre-commit config change is a straightforward tooling update (correct canonical URL, version bump, stale-pin removal, new target version). Every other file change is a direct, no-logic-change output of running the updated formatter.

No files require special attention.

Important Files Changed

Filename	Overview
.pre-commit-config.yaml	Updates Black from 25.12.0 to 26.5.1, switches repo URL to psf/black, removes the stale click<8.1.0 pin, and adds py315 as a target version
metaflow/cmd/develop/stubs.py	Black reformatting: multi-line f.write calls collapsed to single-line opening; no logic changes
metaflow/runner/click_api.py	Black reformatting: raise RuntimeError string collapsed to inline opening; no logic changes
metaflow/init.py	Removes a single blank line between import groups; purely cosmetic Black formatting change
metaflow/plugins/airflow/airflow_utils.py	Removes trailing blank line after imports block; purely cosmetic Black formatting change
metaflow/plugins/datastores/azure_storage.py	Removes blank line between import groups; purely cosmetic Black formatting change
metaflow/plugins/datastores/s3_storage.py	Removes blank line between import groups; purely cosmetic Black formatting change
test/unit/test_artifact_serializer.py	Removes blank line between imports and comment block; purely cosmetic Black formatting change
test/ux/core/test_compliance.py	Removes blank line between imports and comment block; purely cosmetic Black formatting change

_{Reviews (2): Last reviewed commit: "removed arg fast" | Re-trigger Greptile}

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (master@9ae682a). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
metaflow/cmd/develop/stubs.py	0.00%	2 Missing ⚠️
metaflow/runner/click_api.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #3257   +/-   ##
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  Coverage          ?   29.08%           
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  Files             ?      381           
  Lines             ?    52513           
  Branches          ?     9266           
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  Hits              ?    15274           
  Misses            ?    36203           
  Partials          ?     1036           

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