ci: require both checks on main pull requests

[GopiB9119]

Summary

• Ensure python-agent-tests always runs for PRs to main (remove path-filter skips).
• Scope eval-gate to PRs targeting main.
• Add workflow-level concurrency to cancel superseded runs.

Why

Branch protection requires test-python-agent and evaluate checks. Path-filter skips could leave required checks missing on some PRs.

Validation

• npm run agent:test:py (25 tests passed)

[Copilot]

Pull request overview

This PR ensures that both required branch-protection checks (test-python-agent and evaluate) always run on PRs targeting main, by removing path-based filters that could cause them to be skipped. It also adds workflow-level concurrency groups to cancel superseded runs.

Changes:

• Remove path filters from python-agent-tests.yml and add branches: [main] filters for both push and pull_request triggers, ensuring tests always run.
• Scope eval-gate.yml's pull_request trigger to the main branch only.
• Add concurrency blocks with cancel-in-progress: true to both workflows.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/python-agent-tests.yml	Replaced path filters with branch filters (main); added concurrency group to cancel superseded runs.
.github/workflows/eval-gate.yml	Scoped pull_request to main branch; added concurrency group to cancel superseded runs.