The canonical build chain is grill-with-docs → to-prd → to-issues →
implement, with tdd as the red-green loop implement drives internally
rather than a chain step of its own.
- Update the chain diagram on grill-with-docs, to-prd, to-issues, and tdd.
- Reframe tdd's "Where it fits": it's the engine inside the implement
step, still independently reachable, no longer the terminal.
- Point to-prd and to-issues at implement as the thing that builds the
tickets, giving implement the inbound links it previously lacked.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>