ci: add lint workflow and unify coverage reporting

[Pouyanpi]

Description

• Added a new lint workflow to run pre-commit hooks on PRs and pushes.
• Updated test workflows to support coverage reporting via a matrix flag.
• Unified coverage upload to Codecov in the main test workflow.
• Removed the redundant test-coverage-report workflow.
• Improved path-ignore patterns for docs workflows.

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Greptile Overview

Greptile Summary

This PR consolidates CI workflows by introducing a dedicated lint workflow, unifying coverage reporting in the reusable test workflow, and removing the redundant test-coverage-report workflow.

Major changes:

• New lint.yml workflow runs pre-commit hooks separately from tests on all PRs and pushes
• Reusable _test.yml workflow now supports optional coverage reporting via with-coverage parameter
• pr-tests.yml updated to skip docs/workflow changes and enable coverage for Python 3.11 jobs
• test-coverage-report.yml deleted (functionality moved to unified workflow)
• New pr-tests-skip.yml provides clear feedback when tests are skipped

Issues found:

• The codecov upload configuration has a directory/file path mismatch that will cause coverage uploads to fail
• Path filtering patterns use .github/** which won't match docs workflows that use .yaml extension
• The secrets: inherit addition is correct and necessary for codecov access

Confidence Score: 2/5

• This PR has logical errors that will cause coverage reporting to fail in production
• The codecov upload will fail due to the directory/file path mismatch (directory: ./coverage/reports/ but file is at root as ./coverage.xml). Additionally, the path filtering won't catch all workflow files due to .yml vs .yaml extension differences
• .github/workflows/_test.yml requires immediate attention to fix the codecov directory parameter; .github/workflows/pr-tests.yml and .github/workflows/lint.yml need path filter corrections

Important Files Changed

File Analysis

Filename	Score	Overview
.github/workflows/_test.yml	2/5	Added with-coverage parameter and split pytest into two conditional steps with codecov upload; directory parameter in codecov upload points to wrong location
.github/workflows/lint.yml	4/5	New workflow that runs pre-commit hooks on PRs and pushes; well-structured with proper caching
.github/workflows/pr-tests.yml	3/5	Updated to skip markdown and workflow changes, added coverage for Python 3.11, and properly inherits secrets; paths-ignore won't match .yaml files

Sequence Diagram

sequenceDiagram
    participant PR as Pull Request
    participant Lint as Lint Workflow
    participant PRTests as PR Tests Workflow
    participant Skip as PR Tests Skip Workflow
    participant Test as _test.yml (Reusable)
    participant Codecov as Codecov

    Note over PR: Developer opens/updates PR
    
    alt PR changes docs or workflows only
        PR->>Skip: Trigger (paths match)
        Skip->>Skip: Echo "Tests skipped"
    else PR changes code
        PR->>Lint: Trigger (all PRs)
        Lint->>Lint: Run pre-commit hooks
        
        PR->>PRTests: Trigger (paths-ignore)
        Note over PRTests: Matrix: Python 3.10-3.13
        
        loop For each Python version
            PRTests->>Test: Call with parameters
            Note over Test: with-coverage=true for Python 3.11
            
            alt with-coverage enabled
                Test->>Test: pytest --cov (output: coverage.xml)
                Test->>Codecov: Upload coverage.xml
                Note over Test,Codecov: Uses directory: ./coverage/reports/<br/>but file is at root (MISMATCH)
            else without coverage
                Test->>Test: pytest (no coverage)
            end
        end
        
        Test-->>PRTests: All matrix jobs complete
        PRTests->>PRTests: Summary step confirms success
    end

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[Pouyanpi]

@greptileai

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[Pouyanpi]

@greptileai

[Copilot]

Pull request overview

This PR consolidates CI workflows by introducing a dedicated linting workflow and unifying coverage reporting into the main test workflow, removing redundancy.

Key Changes:

• Introduced a new lint.yml workflow to run pre-commit hooks separately from tests
• Added coverage reporting support to the reusable _test.yml workflow via a matrix flag
• Removed the redundant test-coverage-report.yml workflow

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
.github/workflows/test-coverage-report.yml	Deleted standalone coverage workflow, now integrated into main test workflow
.github/workflows/pr-tests.yml	Added coverage flag to matrix and updated path-ignore patterns
.github/workflows/pr-tests-skip.yml	New workflow to skip tests when only documentation changes
.github/workflows/lint.yml	New dedicated linting workflow with caching support
.github/workflows/_test.yml	Added coverage parameter and moved coverage upload from deleted workflow

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