2461a923be
Strip /api prefix from 13 legacy router APIRouter() declarations and dual-mount each on prefix="/api" (backward compat) and prefix="/api/v1" (versioned surface) in app.py. Auth, service-accounts, api-keys, assistants-compat remain single-mount. Update 10 test files to pass prefix="/api" when directly including stripped routers. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>