/api/v1/activities/import expects Content-Type: application/json with body
{"activities": [ActivityImport, ...]} where ActivityImport is camelCase:
{date, symbol, activityType, quantity?, unitPrice?, currency, fee?, amount?,
comment?, accountId?, ...}. Source: crates/core/src/activities/activities_model.rs
Live run failure was HTTP 415 Unsupported Media Type because we were uploading
a CSV in multipart/form-data; that endpoint is JSON-only.
Also handle two response shapes on import — older builds return a list, current
build returns {activities: [...]}.
Test plan:
poetry run pytest -q → 70 passed
poetry run mypy → clean
poetry run ruff check → clean
1d23bf6ed7