Make documentId deterministic SHA-256 string and keep schemaId as in-memory int cache key

[Copilot]

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• Update ExecutionTests to assert/avoid validation-error-only path for escaped-string documentId
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[xperiandri]

@copilot

[Copilot]

Pull request overview

This PR changes GraphQL execution metadata so documentId is generated as a deterministic SHA-256 lowercase hex string from the printed query document instead of using unstable AST hash codes.

Changes:

• Adds shared DocumentId.fromCanonicalQuery hashing helper and uses it in server execution and design-time validation cache key creation.
• Updates DocumentId-related contract types, tests, docs, and JSON fixtures from int to string.
• Replaces an inline introspection literal with a file-backed literal provider dependency.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/FSharp.Data.GraphQL.Shared/Helpers/DocumentId.fs	Adds SHA-256 document ID helper.
src/FSharp.Data.GraphQL.Shared/FSharp.Data.GraphQL.Shared.fsproj	Includes the new helper in compilation.
src/FSharp.Data.GraphQL.Shared/ValidationResultCache.fs	Changes validation cache key document ID type to string.
src/FSharp.Data.GraphQL.Shared/TypeSystem.fs	Changes planning/execution plan document ID types to string.
src/FSharp.Data.GraphQL.Server/Executor.fs	Computes document IDs via SHA-256 over ToQueryString().
src/FSharp.Data.GraphQL.Server/IO.fs	Updates response/result document ID contracts to string.
src/FSharp.Data.GraphQL.Client.DesignTime/ProvidedTypesHelper.fs	Uses deterministic document ID in design-time validation keys.
tests/FSharp.Data.GraphQL.Tests/ExecutionTests.fs	Updates document ID assertions for deterministic string hashes.
tests/FSharp.Data.GraphQL.Tests/Literals.fs	Replaces inline JSON literal with file-backed literal provider.
tests/FSharp.Data.GraphQL.Tests/FSharp.Data.GraphQL.Tests.fsproj	Adds literal provider package reference.
tests/FSharp.Data.GraphQL.IntegrationTests/introspection.json	Updates fixture document ID to string hash.
tests/FSharp.Data.GraphQL.IntegrationTests/integration-introspection.json	Updates fixture document ID to string hash.
Packages.props	Adds central package version for literal provider.
README.md	Updates sample output document ID to string hash.
docs/execution-pipeline.md	Documents deterministic SHA-256 string document IDs.

[Copilot]

Pull request overview

Copilot reviewed 20 out of 21 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 20 out of 21 changed files in this pull request and generated 4 comments.