Implement Happy Path

Implement an approved plan and validate its normal path; do not plan the change or expand its scope.

Inputs

1. Approved plan: The repository-relative or absolute path to the approved implementation plan.
2. Repository context: Applicable instructions, code, commands, and reported behavior supplied by the user or discovered from the repository.

Outputs

1. Happy-path implementation result: Repository changes that implement the approved plan, defended by only the narrowest necessary test, plus a report of the direct implementation, exercised happy path, and validation results; complete when the normal path succeeds and required validation passes.

Procedure

1. Resolve the approved plan and repository rules.

Inputs: