Implement isolated tdmcp features

Implement ONE tdmcp feature from spec into isolated files

Let multiple builders code in parallel without registry/CLI conflicts

• · _workspace/01_design_<feature>.md

• · src/tools/layer*/createXxxxx.ts
• · tests/unit/createXxxxx.test.ts

• · TypeScript
• · Zod
• · vitest
• · biome

• · spec is finalized
• · only create new files, never edit shared files

• · unit test fails — fix before marking done
• · spec operator doesn't exist — ask architect for alternative

• · creates new files only
• · runs vitest locally before handing off