Ground the plan and implementation

Read DDD and apply Keep one persistent note and ground the plan, performing steps 1 and 2 first wherever questions or sources are missing. That skill owns the procedure and Documentation basis format.

Finish a planning request with a saved plan: cited decisions, useful snippets labeled by origin and execution status, checks to run, and open questions. Stop before implementation when only a plan was requested.

For authorized implementation, continue through DDD's steps 4 and 5. Consult new APIs and research failed assumptions before workarounds; maintain the same note and compare actual code against sources. No claims or trace ledgers are required.

Keep proposed application explanations visibly proposed until implementation and checks establish them. Use snippets only for consequential choices.