Greptile Overview

Summary

This PR updates the CodSpeed GitHub Action from v3 to v4 in the performance testing workflow. The main changes are replacing token-based authentication with instrumentation mode configuration.

Key changes:

• Bumped CodSpeedHQ/action from @v3 to @v4
• Removed token: ${{ secrets.CODSPEED_TOKEN }} parameter
• Added mode: instrumentation parameter

Considerations:

• CodSpeed v4 appears to use a different authentication mechanism (instrumentation mode instead of explicit token)
• Should verify this works correctly for the repository's use case

Confidence Score: 4/5

• This PR is generally safe to merge with minimal risk
• The change is a straightforward dependency version bump following the action's migration path from v3 to v4. The new authentication approach using instrumentation mode is standard for CodSpeed v4, though authentication configuration should be verified
• No files require special attention - this is a simple action version bump

Important Files Changed

File Analysis

Sequence Diagram

sequenceDiagram
    participant GH as GitHub Actions
    participant WF as Performance Workflow
    participant UV as UV Package Manager
    participant CS as CodSpeed v4
    participant PT as Pytest Benchmarks

    GH->>WF: Trigger on push/PR/workflow_dispatch
    WF->>WF: Checkout code
    WF->>UV: Install uv package manager
    WF->>UV: Setup Python 3.14
    WF->>UV: Sync dependencies (all extras + dev)
    WF->>CS: Initialize CodSpeed action v4
    CS->>CS: Setup instrumentation mode
    CS->>PT: Run pytest benchmarks with --codspeed
    PT->>PT: Execute tests/benchmarks
    PT->>CS: Send benchmark results
    CS->>CS: Analyze performance data
    CS->>GH: Upload results to CodSpeed platform

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