Template executable capability package manifests and deterministic build commands

[enricopiovesan]

Summary

Add a reusable template or helper path for executable capability package manifests and colocated deterministic build commands.

Why

The OSS pattern extraction note from #108 identified Spin's package-manifest plus colocated build-command pattern as a strong fit for Traverse executable capability implementations.

Depends on

None.

Blocked by

None.

Definition of done

• Provide one reusable template or documented helper pattern for executable capability packages.
• Cover package manifest fields, binary path, digest declaration, and deterministic local build command shape.
• Align the template with the first WASM AI agent example patterns.

Validation

• the template or helper path exists in the repo
• it is consistent with the governed executable package examples
• PR checks pass

[enricopiovesan]

Implemented locally on branch codex/issue-111-package-template.

Artifacts:

• docs/executable-package-template.md
• examples/templates/executable-capability-package/
• scripts/ci/executable_package_template_smoke.sh

Validation:

• bash scripts/ci/executable_package_template_smoke.sh
• bash scripts/ci/repository_checks.sh

[enricopiovesan]

Closing this ticket now that PR #115 is merged.