fix: comprehensive repo audit — 15 issues fixed

fix(security): Sprint 1 — path traversal, SSRF, Docker hardening, error exposure

fix: "error [object Object]" on API validation errors + SQLite migration

fix(security+infra): Sprint Fix 1 — path traversal, docker-compose, CORS

rename: Scriptorium AI → IIIF Studio across entire codebase

fix(sprint-f1): sécurité — path traversal, SSRF, CORS, validation inputs

fix(api): guard catch-all against /api/* paths in production + refactor Admin UI

fix(paths): analyse systémique et correction exhaustive des chemins en production

feat(sprint6-B): validation éditoriale + recherche plein texte

fix(backend): add response_model=None to SPA catch-all (FastAPI union type error)

feat(sprint5): frontend React minimal — visionneuse + 4 couches

fix: root redirect /docs + Node.js 24 dans la CI

feat(sprint4-session-b): endpoints jobs, ingestion et modèles IA

feat(sprint4-session-a): API FastAPI — structure de base + endpoints lecture et export