Stellar: v0.6.0 release

[brozorec]

This PR:

• adapts the contracts to work with v0.6.0 of Stellar Contracts
• refactors access control to reflect changes in the api
• adds MuxedAddress to fungible token transfer
• replaces the default 18 decimals in fungible token to 7 which is default for stellar assets
• fixes some missing imports

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Walkthrough

Pull request updates OpenZeppelin Stellar contracts wizard to support OpenZeppelin Stellar Soroban Contracts v0.6.0, replacing #[default_impl] with #[contractimpl(contracttrait)], changing transfer parameter types from Address to MuxedAddress, adjusting metadata indices from 18 to 7, reordering access control parameters, and updating default fungible decimals to 7.

Changes

Cohort / File(s)	Summary
Version & Compatibility Updates .changeset/pink-eyes-judge.md, packages/core/stellar/src/utils/version.ts	Updated contract version from 0.4.1 to 0.6.0 and Soroban SDK from 22.0.8 to 23.4.0 across all version constants and changeset metadata
Trait Implementation Refactor packages/core/stellar/src/add-pausable.ts, packages/core/stellar/src/fungible.ts, packages/core/stellar/src/non-fungible.ts, packages/core/stellar/src/set-access-control.ts	Replaced #[default_impl] macro with #[contractimpl(contracttrait)] for trait implementations; removed conditional stellar_macros imports for default implementations
Fungible Token Updates packages/core/stellar/src/fungible.ts, packages/core/stellar/src/fungible.test.ts.md	Changed transfer function parameter type from Address to MuxedAddress; updated metadata initialization index from 18 to 7; adjusted premint decimals from 18 to 7; added explicit trait implementations for Ownable and AccessControl
Non-Fungible Token Updates packages/core/stellar/src/non-fungible.ts, packages/core/stellar/src/non-fungible.test.ts.md	Converted default trait implementations to #[contractimpl(contracttrait)]; added explicit Ownable trait implementations; updated soroban_sdk imports to include Address unconditionally
Access Control Changes packages/core/stellar/src/set-access-control.ts	Reordered parameters for grant_role, revoke_role, and renounce_role functions to place account/role before caller; added new get_existing_roles function returning Vec<Symbol>; updated trait tags for non-explicit implementations
Stablecoin & Extended Token Tests packages/core/stellar/src/stablecoin.test.ts.md, packages/core/stellar/src/zip-rust.compile.test.ts.md	Updated version headers from 0.4.1 to 0.6.0; replaced default_impl patterns with contracttrait; changed transfer signatures to use MuxedAddress; updated metadata index and mint amounts; upgraded Cargo dependency versions
Contract Test Snapshots packages/core/stellar/src/contract.test.ts.md	Updated version directives in header comments from ^0.4.1 to ^0.6.0 across all contract snapshots
UI & Documentation Updates packages/ui/src/stellar/TraitImplementationSection.svelte, packages/common/src/ai/descriptions/stellar.ts	Updated user-facing tooltips and AI descriptions to reflect trait implementation changes; removed references to #[default_impl] macro and replaced with descriptions of default vs. explicit implementations

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• Prepare Release #761 — Release preparation PR that updates release metadata and versions to support the explicitImplementations feature changes implemented in this PR
• [Stellar] Add toggle to switch from default to explicit trait implementation #728 — Modifies trait-implementation wiring for Stellar contracts (default_impl vs. contracttrait) across the same builder files (add-pausable, set-access-control, fungible/non-fungible)

Suggested labels

ignore-changeset

Suggested reviewers

• ericglau
• CoveMB
• ozgunozerk

🚥 Pre-merge checks | ✅ 1 | ❌ 2

❌ Failed checks (1 warning, 1 inconclusive)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 18.18% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	❓ Inconclusive	No pull request description was provided, making it impossible to assess whether it relates to the changeset.	Add a description explaining the v0.6.0 upgrade scope, breaking changes (MuxedAddress parameter, parameter reordering, metadata index), and migration guidance for users.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Stellar: v0.6.0 release' clearly and specifically summarizes the main purpose of the changeset: upgrading Stellar contracts to version 0.6.0.

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[ericglau]

Just a few comments, thanks.

[ericglau]

LGTM, thanks!