ci: add workflow to check connector identity uniqueness (#6599)

[jabesq]

Proposed changes

• Add .github/scripts/check_connector_identity_uniqueness.py — a Python script that scans every connector directory across all five connector-type roots and asserts that three identity fields are unique repository-wide: the connector folder basename (used by CI to derive Docker image names), slug, and container_image from connector_manifest.json.
• Add .github/workflows/check-connector-identity-uniqueness.yml — a GitHub Actions workflow that runs the script automatically on every push that touches a connector_manifest.json file, also available via workflow_dispatch. Runs with minimal permissions (contents: read) and pins checkout to a full commit SHA.

Related issues

• Closes ci: add check to ensure connector folder name is unique #6599

Checklist

• I consider the submitted work as finished
• I have signed my commits using GPG key.
• I tested the code for its functionality using different use cases
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

The script is intentionally stdlib-only so it runs directly with system Python 3 on ubuntu-latest without any install step. The workflow is path-scoped to only trigger on manifest changes, with a concurrency group to cancel redundant back-to-back runs. The folder-basename check is separate from manifest field checks because folder names are not declared in manifests but are implicitly used by the CI image-naming convention.

[Copilot]

Pull request overview

Adds a lightweight repository guardrail to prevent connector identity collisions that would break CI/Docker image naming by enforcing repository-wide uniqueness across connector directories and key manifest identity fields.

Changes:

• Introduces a stdlib-only Python script to scan all connector roots and detect duplicates for folder basename, slug, and container_image.
• Adds a GitHub Actions workflow to run the check on pushes affecting connector manifests (and manually via workflow_dispatch).

Reviewed changes

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

File	Description
.github/workflows/check-connector-identity-uniqueness.yml	New workflow to run the uniqueness check when connector manifests change.
.github/scripts/check_connector_identity_uniqueness.py	New stdlib-only script that scans connector directories/manifests and reports identity duplicates.