fix(build): scope artifact outputs to their target

[ScriptedAlchemy]

Summary

• require target artifact paths to start with the matching target namespace before layout classification
• cover equal-length sibling targets that previously produced false AB6017 diagnostics
• publish the fix as an agent-bundle patch

Test plan

• pnpm rstest --config rstest.config.ts packages/agent-bundle/tests/artifact-validator.test.ts

Fixes #123

[changeset-bot]

🦋 Changeset detected

Latest commit: 4a043ef

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
agent-bundle	Patch

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[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-01T05:02:58.240956Z	4a043ef	PR opened

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[pkg-pr-new]

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle@129

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle/create-agent-bundle@129

npm i https://pkg.pr.new/ScriptedAlchemy/agent-bundle/@agent-bundle/rsc-runtime@129

commit: 4a043ef