Records the decisions from the S5 spike and the Full Grill as append-only ADRs:
Go not Python; no Supabase; standalone-first with brain as one sink; copy the
llm package; brain sink via HTTP brain-mcp; fresh outbound OAuth; captions-first
with STT deferred; Future C deferred behind the Stage 0 gate; trunk-based dev.
The top-level guardrail for Tapir: the problem, the product, the principles
(local-first, standalone-first, attention-as-scarce-resource, data isolation),
who it's for (now / Future B / deferred Future C), and a staged, falsifiable
definition of success with Stage 0 ("useful to me") as the gate.