Add decisions_sync.py that parses decisions/*.md markdown headings,
extracts metadata (type, domain, status, round, date), and upserts
into SQLite. Two-pass approach: decisions first, then cross-references
to avoid FK violations on forward references.
Schema adds decisions table (52 rows) and decision_refs table (29 rows)
with cascading deletes. Makefile gains decisions-sync, decisions-coverage,
decisions-active, and decisions-orphan targets. Sync runs as part of
make setup.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6
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