Lift business decisions made during the MVP build into the contract, per
constitution rule 5 (divergence points belong in the spec).
ADR-0009 — amends ADR-0005's render-matrix framing: an export target is a *build*
producing a typed Artifact (SingleFile | FileTree). build = map (per-kind, the
field-visibility lives here) + reduce (assemble, determined by artifact type:
SingleFile concatenates in lesson order then compiles — which is why @ref and
counters work). Build form = declarative schema + a run-shell hatch (where
ADR-0005's medium-only category (b) and npm/HTML builds live), not a Makefile.
typst compile is hidden backend mechanism, not part of a target. Defaults seeded
at project creation, overridable in the file — the heading-numbering bug
(一、 reused → 二、一、) is the worked example of that missing override layer.
ADR-0010 — backfills ADR-0005's deferred "legal lesson": the 7-class diagnostic
taxonomy with per-class meaning + severity; legal lesson = no error-level
diagnostic; the 5-phase pipeline (load→structural→schema→compile→coverage) with
compile gated on zero prior errors. External-facility diagnostics (TypstCompile,
DanglingReference, schema conformance) modeled as abstract predicates whose
verdict comes from an implementation oracle, not from Lean — keeps the contract
honest about what it does and doesn't decide.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
