GET /api/exam/corpus — read-only view over the seeded eb_specifications + eb_exams
catalogue: board → subject → spec → papers grouped by paper_code+session, each
showing which of QP/MS/ER exist AND are stored, with per-spec + global rollups
(specs, papers, sessions, QP/MS/ER counts). Surfaces the collected exam bank so
the app can display its state — e.g. AQA GCSE Physics 8463: 21 QP / 12 MS / 17 ER.
Validated against the live catalogue (60 specs, 1178 docs, 535 papers) + a unit
test (grouping, QP/MS/ER presence, stored-vs-catalogued). As-user (catalogue is
public reference data).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
