Make `documentId` deterministic SHA-256 string and keep `schemaId` as in-memory `int` cache key#575

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copilot/fix-documentid-issue

Commits on May 18, 2026

Use deterministic SHA-256 based documentId generation

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Update introspection fixture documentId values

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Address review feedback on deterministic documentId changes

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Document expected deterministic documentId in test

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Clarify hash truncation and expected documentId derivation

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Refine hash span usage and test value explanation

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Address review feedback on literals and documentId hashing

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Switch documentId to deterministic SHA-256 string

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Apply follow-up review suggestions

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Fixed ReadMe

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Use ValidationResultKey directly in cache instead of GetHashCode()

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Make SchemaId deterministic using SHA-256 hash of introspection schema JSON

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Apply code review feedback: use uppercase hex for Unicode escapes and object initializer syntax

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Optimize: cache JsonSerializerOptions and reduce StringBuilder overhead

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Minor optimization: avoid sprintf in character loop for better performance

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Fix trailing whitespace in string escaping code

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Ensure deterministic JSON serialization and use lowercase hex for Unicode escapes

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Add documentation for UnsafeRelaxedJsonEscaping usage and SHA256 instance creation

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Optimize SchemaId serialization and improve code formatting

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Add comprehensive test coverage for documentId and validation cache

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AI review fix

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Cache schema ID at Executor level to avoid recomputing on every request

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Fix schema ID computation to run after middleware compilation

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Add comprehensive test coverage for ToQueryString string escaping

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Simplify SchemaId generation to use GetHashCode

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Clarify SchemaId GetHashCode scope in XML docs

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Change validation SchemaId type to int

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Remove unnecessary SchemaId helper module

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Formatted changed files
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Escape U+2028/U+2029 in ToQueryString and add regression tests

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Made `ExecutionTests` asynchronous
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Fixed comments
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Removed unnecessary test
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Make concurrent cache test actually run in parallel

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Rename worker readiness gate in concurrent cache test

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Fix cross-platform documentId hashing and AstExtensions List.choose

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Improved query normalization
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Simplified cache test
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Execution plan cache fix

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Fix escaped-string documentId test to execute valid argument path

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