Four things that share a spine, so they arrive together.
**Folders.** A hand-picked set of questions, and the fourth thing a grant can
name beside exam, discipline and category. Deliberately not `user_collections`
with a sharing flag: a library is a consequence of access — you save what you
can already see — while a folder is a source of it, and one table holding
thousands of private lists beside a handful that confer permission is one
mistake away from a leak. Built from the question manager, granted on /access.
Membership stays with the owner and moderators so a grantee cannot widen their
own reach, and deleting a folder takes its grants with it.
Two live constraints had to be rewritten to accept it: `ck_grant_has_a_dimension`
and `uq_grant_dimensions` both predate `folder_id`, so a folder-only grant
failed the check and two folder grants collided on the unique index.
**Per-question feedback.** The learner's half already existed. What was wrong
was who could read it: any grant at all let an educator list and delete reports
about the whole bank. Reports are now scoped by `question_scope_predicate`, the
same predicate that decides which questions that educator can see, and a reply
thread makes the report a conversation the learner can follow rather than a
form that swallows what they said.
**Per-section notes and article feedback.** Two tables on purpose:
`article_section_notes` is private to whoever wrote it, `article_feedback` goes
to whoever maintains the article. Both point at the section id inside
`articles.sections` rather than at `article_section_index`, whose rows are
dropped on unpublish — a cascade from there would delete a learner's writing
because an educator took an article down for an afternoon. A rename keeps a
note attached; a deleted section leaves it marked orphaned under the heading it
was written on, for its writer alone to remove.
The header's feedback badge covers both, because questions and reading are the
same job to whoever is doing it.
Migration i9f0a1b2c3d4. 556 backend and 572 frontend tests pass.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
The question toolbar now carries what a learner actually reaches for. An
attending tip — one sentence of the kind said at the bedside, stored separately
from the explanation because it is read before the answer is known and must not
give it away. A note of their own on that question, replacing a single global
note that was one page for everything and so was never about the question in
front of you. Saving to a folder, which the collections API has supported all
along with nothing in the player able to call it. And the share link, which
previously only appeared on the start screen.
Panels open one at a time under the toolbar; two at once would push the options
off screen.
Reset question resets one question, not the attempt: a misclick should cost the
answer you just gave, not the nineteen before it.
The clock shows session time, time on this question and the running average, in
study mode as well as exam mode — four minutes on one question is the number
that says whether you are learning or stuck, countdown or no countdown. It
pauses, because time spent making tea is not time spent thinking.
208 backend, 249 frontend green.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
