Three things landed together; the message names all of them, because a commit
that mentions one is a commit nobody finds the other two in.
**Figures.** Thirty-four JPEG 2000 files — 21 on questions, the rest unattached
in the media library — are WebP now, with `questions.image_path`,
`questions.explanation_image_path` and `media_assets.path` repointed together.
Serving already converted them on the way out, so nothing was broken; this
removes the step and makes what is stored the same thing that is served. The
originals stay: they are the only copy of what came out of the PDF, they cost a
few megabytes between them, and a conversion nobody can undo is not one to run
against a live bank. Paths are found by what the columns say rather than by
listing a bucket, because three tables record them and updating two would be
worse than none.
**The openai SDK is gone.** Ten call sites — one more than the map said, the
Celery article drafter — every one of them a POST with a JSON body, and not one
reading usage, cost, tool calls or logprobs. Every other call to the same proxy
was already plain httpx: embeddings, the ChromaDB embedding function, speech
both ways, model discovery, the vision probe. So this deletes an abstraction
rather than swapping one for another, and leaves one HTTP client instead of
two. `chat()` and `achat()` return the message content; a `ProxyError` carries
the status and the first 500 characters of the body, which is where the proxy
explains itself.
Behaviour is preserved deliberately, including a 600-second fallback timeout
for the four call sites that were running on the SDK's ten-minute default.
Lowering that is a real change and belongs in its own commit.
Proved against the live proxy on both services rather than only against mocks:
a completion, an async completion, a real 400 the vision probe still classifies
as a refusal, 407 models read from the catalogue, and a word read off an image.
**Voice.** A chosen voice is honoured whatever serves it. The prefix check only
accepted a locally served one, so a site adding a hosted voice would offer it
in Settings, save the learner's choice, and then quietly read every question in
the default voice. The list has always come from the database — adding a voice
is a row in Settings → AI models, never a code change.
And the sign-in page stops offering a locked door: `signup-policy` reports
whether registration is open at all, and the Sign up link goes when it is not.
The switch existed and the only way to discover it was to fill the form in.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
**Linking.** A question could be tied to an article only from the article, by
typing the question's number into a box — so opening a question you had just
linked showed no sign of the link, and there was no control to add one. Both
ends now search: find the article by title from the question, find the question
by stem from the article, pick which section of the article the link lands on,
and see what is already linked. One shared finder, so the two ends of one
relationship cannot describe it differently. `GET /questions/{id}/articles`
mirrors the endpoint that already existed the other way, and `GET
/articles/linked` is retired — it answered this question by shipping the whole
prose of every linked article to the quiz player for a list of titles.
"Practise this topic" is a reader's control and no longer appears on an editing
screen.
**The player.** The rail was a bordered card floating in the page with a
scrollbar of its own, so a session had two scrollbars side by side and a
collapse handle tucked inside the card's padding. It is a column now: flush,
full height, its own background rather than its own border, the handle on the
boundary it moves, and a progress bar under the count. The bar at the foot is
the bottom edge of the window — three flush segments, no gaps, no pills —
because Exit as a small grey pill beside a large blue Next made leaving look
like the accident.
Study mode no longer asks whether you are sure. Leaving suspends: every answer
is saved, nothing is graded, and it is waiting where you left it — so the
dialog asked permission for something reversible, under a name for something
that does not happen. An exam still asks once, because a block has a clock, and
it now says what it is: "Leave this block?", not "End Session".
Options are lettered. The explanations already are — a stem extracted from a
board PDF says "Preferred Response: E" — so numbering them 1 to 5 left the
reader translating between two labellings of the same five lines. The tutor is
told the same letters, and the answer key is marked against its own option and
declared authoritative, so a model that would have answered differently cannot
tell a student the marked answer is wrong.
"Preferred response" and "Source page 518" are gone: the first labelled a block
that is obviously the answer, the second named a page of a book the learner
does not have. The clocks moved out of a grey strip across the explanation,
where they read as part of the answer, to the foot of the rail with everything
else about the session.
**AI Mode.** Sources are headed and counted at the end, where evidence belongs,
with the practise button after them rather than above. That button appears only
when there is something to build from and says what it will build — it used to
sit under "how can I help you today?" offering to make a session out of
nothing. A cited question opens in place: `/questions/:id` is the editor, so
following one dropped a learner into a form for changing the question they had
just been told about. And a session built from a chat is named like every other
session, rather than after the chat — asking "hi" produced "hi — practice".
Also: two test questions with raw `<p> </p>` in their stems were live in
the bank; retired. And 36 article summaries were written as a table of contents
with the colons filed off — "Peanut allergy prevention and management: LEAP
guidelines by risk tier, risk stratification, and anaphylaxis treatment" — every
noun phrase sounding informative and none of them saying anything. Rewritten as
claims, with the rule added to the prompt that produced them.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
A library holds both articles and questions now. It held only questions, so the
bookmark on an article had nowhere to write and stood in for the questions
filed under the topic instead — which is not what a reader who saved the
reading asked for, and left a topic with no questions unsaveable. Its own
table rather than a nullable column beside `question_id`: that shape allows a
row with both or neither, and every read then has to say which kind it is
looking at.
Which libraries already hold an article is now asked of the server, as one
question. It was kept on the device because the API could not answer, which was
wrong on the second machine and silently so. Putting one back is the same
control rather than an undo somewhere else.
"Short" is called Summary, because that is what the section is called, and it
is a toggle rather than one tab of three — the whole topic, or the part of it
worth revising, which is a different kind of choice from Long versus Clinical.
It names its own state, so a reader can tell why two thirds of the contents are
not there. The stored variant stays `short`: renaming it would be a data
migration to change a word on a button.
Also: `litellm==1.28.13` has been withdrawn from PyPI, so requirements.txt
could not be edited at all without the pip layer failing to rebuild — which is
what blocked pinning Pillow. Repinned to 1.53.1, the nearest still published;
the three things we use are unchanged in it, and both suites pass on the new
set. Pillow is pinned properly now rather than arriving through PyMuPDF.
One consequence, handled: `litellm.utils.get_valid_models()` now returns
nothing unless a provider's own API key is in the environment, and ours is a
proxy. That branch is only reached when no proxy is configured, and it now says
so instead of answering with an empty list that reads as "this site has no
models".
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TqXevQJhxFrM7jJg82cgZN
Recovery snapshot of the existing worktree before the Orthobullets-inspired revamp. Includes explanation images, classification snapshots, quiz visibility/resume fixes, quiz codes, TTS options and bot formatting. Secret heuristic and Python syntax checks passed; not a release or full behavioral validation.
- Certificate: PDF generated on course completion, download from course page
- SCORM: upload ZIP packages as lesson type, served in iframe, manifest parsed
- QTI 2.1: export selected/all questions as XML, import QTI files into bank
- Uses fpdf2 for certificate PDF generation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fully decouple course quizzes from main quiz system (hidden from
dashboard stats, history, search, results page)
- Course quiz results show "Back to Course" instead of retake/delete
- Add allow_review toggle for course creators to control answer review
- Show quiz title on course page, hide pool size from students
- Add course thumbnails to browse cards
- Replace passlib with bcrypt directly (compatible with existing hashes)
- Add HIBP breached password warnings on register/reset/change password
- Add CLI management tools (reset-password, set-role, stats, etc.)
- Fix quiz PATCH endpoint: ownership check instead of moderator-only
- Add max_length validation on course/module/lesson titles
- Fix score display bug on results page (0 of N when review disabled)
- Fix question count on course quiz start (show per-attempt, not pool)
- Improve suspend warning for timed course quizzes with max attempts
- Clean up validation error messages (show "Invalid email" not Pydantic dump)
- Add DDL migration for allow_review column
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- FastAPI backend with JWT auth, roles (admin/moderator/user)
- PDF upload (up to 500MB) with streaming, PyMuPDF text extraction
- ChromaDB vectorization per page with metadata
- LiteLLM AI question extraction from PDF (not generation)
- Image extraction from PDF pages, graceful fallback
- Quiz modes: timed (countdown timer) + learning (answers shown inline)
- Page-by-page question navigation with dot navigator
- TTS endpoint using LiteLLM (Google Vertex / OpenAI voices)
- Admin dashboard: AI model management per task, user role management
- Moderator role: upload PDFs, create sections, generate quizzes
- Spaced repetition reminders via SMTP email (SM-2 intervals)
- APScheduler daily reminder jobs
- Celery + Redis for background PDF processing
- React frontend with all pages
- Docker Compose deployment (nginx + backend + celery + redis)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
