Compare committed GraphQL schemas - #4722

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Project	Deployment	Actions	Updated (UTC)
pycon	Ready	Preview	Aug 13, 2026 7:27am

Summary: Adds a new CI workflow that runs GraphQL Inspector to diff backend/schema.graphql between the PR base and head, using git show to extract the base version of the schema and skipping gracefully if it doesn't exist.

No significant issues found. One minor nit:

• The edited trigger type causes the workflow to re-run on pure title/body edits (not just base-branch changes), even when the schema itself hasn't changed in that push. This is minor CI overhead rather than a correctness problem — worth confirming it's intentional (e.g., to catch base-branch retargeting) rather than an oversight, since the sibling graphql-schema.yml workflow doesn't include it.