[fazzatti]

SAC clients created from a contract ID previously lacked code and issuer. await StellarAssetContract.fromContractId(...) now fetches the contract instance once, verifies the built-in Stellar Asset executable, reads its canonical asset metadata, and checks that the recovered identity derives the requested contract ID on the configured network. The returned client always exposes readonly code and issuer; current admin changes do not affect asset identity.

• Require complete asset identity for synchronous construction. fromAsset() and NativeXLM() remain synchronous; contract-id-only constructor calls migrate to the awaited factory. XLM exposes code XLM and issuer marker native.
• Add typed errors for non-SAC executables and malformed metadata, while preserving missing-entry/RPC errors and the existing mismatched-ID error metadata.
• Add unit cases for native and issued identities (including long codes and issued XLM), changed contract admins, both decoded storage shapes, custom RPC/cache options, malformed metadata, mismatched assets/networks, non-SAC executables, unavailable entries and RPC failures. Update the live integration suite to resolve only after deployment and verify issuer identity after an admin change.
• Update the SAC guide, checked example, README examples, generated error reference, installation guide and Core 2.0 migration guidance.

This is an intentional Core 2.0.0 API change. The reviewed release plan also moves dependent packages to Core 2.0 (major releases for stable packages, minor releases for previews), with matching React dependency versions. JSR import requirements cannot express a union of the existing Core 1.x range and Core 2.x. The public API snapshot, Build Verification version constant and frozen bundle dependency fixture are synchronized; external dependency resolutions are unchanged.

Validation with the pinned Deno 2.9.6:

• Targeted implementation and test type checks, scoped lint and whitespace checks passed.
• Documentation checks passed: 259 Markdown files, 350 TypeScript snippets and 126 complete examples type-checked without execution.
• Release-plan and public-API checks passed; no unreviewed declaration changes.

Unit/integration tests were deliberately not run locally, and CI completion is not a prerequisite for opening this PR, as requested. Tests target every new implementation branch and the existing 100% coverage goal. Measured coverage is not yet verified; CI will report it. Coverage thresholds and test gates are unchanged.

[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-28T17:22:29.406556Z	e6a94b3	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: e6a94b34ac

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.99%. Comparing base (28091af) to head (e5697d4).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #164   +/-   ##
=======================================
  Coverage   99.99%   99.99%           
=======================================
  Files         573      573           
  Lines       42178    42218   +40     
  Branches     5589     5588    -1     
=======================================
+ Hits        42176    42216   +40     
  Partials        2        2           

Flag	Coverage Δ
all-tests	99.99% <100.00%> (ø)

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Files with missing lines	Coverage Δ
build-verification/src/core/evidence/accumulate.ts	100.00% <100.00%> (ø)
core/asset/sac/error.ts	100.00% <100.00%> (ø)
core/asset/sac/index.ts	100.00% <100.00%> (ø)
core/asset/sac/types.ts	100.00% <ø> (ø)

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