Wire JWT_SECRET/POSTGRES_PASSWORD through Gitea Actions secrets

The job checks out into the runner's own workspace, not
/opt/ruvdstests where DEPLOY.md has the human create a .env file — so
docker compose here had no .env to read JWT_SECRET from and failed
outright. POSTGRES_PASSWORD would have silently fallen back to the
compose file's devpassword default instead of erroring, which on
Deploy would have broken auth against the already-initialized pgdata
volume.

.gitea/workflows/ci-cd.yml

@@ -10,13 +10,33 @@ on:
 # checkout path — otherwise `docker compose` would derive the project name
 # from the checkout directory, potentially spinning up a second stack and
 # losing the `pgdata` volume instead of updating the running one.
+#
+# JWT_SECRET/POSTGRES_PASSWORD come from Gitea's own Actions secrets store
+# rather than the `.env` file DEPLOY.md has the human create in
+# `/opt/ruvdstests` — the job checks out into the runner's own workspace, not
+# that directory, so there's no `.env` for `docker compose` to read here.
+# Must match the values already in that `.env` file: on `Deploy` this
+# `docker compose up -d` targets the same running project (via
+# COMPOSE_PROJECT_NAME above), and a different POSTGRES_PASSWORD than what
+# the live `pgdata` volume was initialized with breaks the DB connection.
 env:
   COMPOSE_PROJECT_NAME: ruvdstests
+  JWT_SECRET: ${{ secrets.JWT_SECRET }}
+  POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
 
 jobs:
   build-test-deploy:
     runs-on: host
     steps:
+      # `runs-on: host` runs every step directly on the bare runner
+      # container instead of spinning up a fresh container per job, and
+      # `actions/checkout` below is a JS action — it needs a `node` binary
+      # on PATH to run at all, which this image doesn't ship. Has to come
+      # before Checkout, since Checkout itself is what fails without it.
+      - name: Install Node.js
+        shell: bash
+        run: apk add --no-cache nodejs
+
       - name: Checkout
         uses: https://github.com/actions/checkout@v4
 

docs/CI-CD.md

@@ -37,13 +37,25 @@ docker run -d --name gitea-ci-runner --restart unless-stopped \
 
 `host:host` — раннер выполняет джобы напрямую в своём собственном контейнере (никаких вложенных
 контейнеров на каждый джоб), у него смонтирован docker.sock хоста — поэтому `docker compose`
-внутри джоба управляет реальными контейнерами на этой машине. Джоб сам ставит себе `docker-cli` и
-.NET SDK через `apk`/`dotnet-install.sh` (см. workflow) — образ раннера намеренно голый, чтобы не
-поддерживать отдельный кастомный образ.
+внутри джоба управляет реальными контейнерами на этой машине. Джоб сам ставит себе `node`,
+`docker-cli` и .NET SDK через `apk`/`dotnet-install.sh` (см. workflow) — образ раннера намеренно
+голый, чтобы не поддерживать отдельный кастомный образ. `node` ставится первым шагом, до
+`actions/checkout` — этот шаг сам является JS-экшеном и без `node` в PATH падает с `Cannot find:
+node in PATH` раньше, чем успевает выполниться что-либо ещё.
 
 Проверить, что раннер подключился: Site Administration → Actions → Runners — должен появиться
 `ruvdstest-prod` со статусом Idle/Online.
 
+## Секреты
+
+Джоб чекаутит репозиторий во временную директорию раннера, а не в `/opt/ruvdstests` — своего
+`.env` там нет, поэтому `JWT_SECRET`/`POSTGRES_PASSWORD` для `docker compose build`/`up` берутся не
+из файла, а из хранилища секретов самой Gitea Actions: Settings репозитория → Actions → Secrets →
+**Add Secret**. Завести `JWT_SECRET` и `POSTGRES_PASSWORD` со **значениями, совпадающими с тем, что
+уже лежит в `/opt/ruvdstests/.env`** на сервере (`cat /opt/ruvdstests/.env` на сервере, скопировать
+оттуда) — деплой-шаг пересоздаёт тот же самый запущенный проект (`COMPOSE_PROJECT_NAME` выше), и
+рассинхронизация паролей с уже инициализированным `pgdata`-volume сломает подключение к БД.
+
 ## Проверка
 
 Сделайте любой коммит и запушьте в `master` — во вкладке **Actions** репозитория должен появиться

src/Client/Features/Quizzes/TakeQuiz/State.fs

@@ -53,6 +53,9 @@ let rec update (token: string option) (msg: Msg) (model: Model) : Model * Cmd<Ms
         updated, cmd
     | AnswerSaved _ -> { model with Error = None }, Cmd.none
     | AnswerSaveFailed(_, err) -> { model with Error = Some err }, Cmd.none
+    | GoToQuestion index ->
+        let clamped = index |> max 0 |> min (List.length model.Data.Questions - 1)
+        { model with CurrentIndex = clamped }, Cmd.none
     | Tick ->
         let updated = { model with RemainingSeconds = remainingSeconds model.Data DateTimeOffset.UtcNow }
         // The server is the actual authority (it now rejects any answer

src/Client/Features/Quizzes/TakeQuiz/Types.fs

@@ -18,6 +18,10 @@ let remainingSeconds (data: QuizForAttempt) (now: DateTimeOffset) : int option =
 type Model =
     { Data: QuizForAttempt
       Answers: Map<QuestionId, StudentResponse>
+      /// Index into `Data.Questions` of the question currently shown on its
+      /// own card — questions are navigated one at a time via prev/next
+      /// arrows rather than shown all at once.
+      CurrentIndex: int
       Error: string option
       IsFinishing: bool
       RemainingSeconds: int option
@@ -30,6 +34,7 @@ type Model =
 let init (data: QuizForAttempt) : Model =
     { Data = data
       Answers = Map.empty
+      CurrentIndex = 0
       Error = None
       IsFinishing = false
       RemainingSeconds = remainingSeconds data DateTimeOffset.UtcNow
@@ -39,6 +44,7 @@ type Msg =
     | AnswerChanged of QuestionId * StudentResponse
     | AnswerSaved of QuestionId
     | AnswerSaveFailed of QuestionId * string
+    | GoToQuestion of int
     | Tick
     | FocusLost
     | FocusRegained

src/Client/Features/Quizzes/TakeQuiz/View.fs

@@ -5,7 +5,7 @@ open Domain
 open Domain.Contracts
 open Client.Features.Quizzes.TakeQuiz.Types
 
-let private questionView (answers: Map<QuestionId, StudentResponse>) dispatch (index: int) (question: QuestionView) =
+let private questionBody (answers: Map<QuestionId, StudentResponse>) dispatch (question: QuestionView) =
     let groupName = string question.Id
 
     let body =
@@ -111,18 +111,33 @@ let private questionView (answers: Map<QuestionId, StudentResponse>) dispatch (i
                     dispatch (AnswerChanged(question.Id, NumericResponse parsed)))
             ]
 
+    body
+
+let private questionCard (model: Model) dispatch (question: QuestionView) =
+    let total = List.length model.Data.Questions
+
     Html.div [
         prop.key (string question.Id)
-        prop.className "question"
+        prop.className "question-card"
         prop.children [
-            Html.span [ prop.className "question-number"; prop.text (sprintf "№ %02d" (index + 1)) ]
-            Html.div [
-                prop.className "question-body"
-                prop.children [ Html.p [ prop.className "question-text"; prop.text question.Text ]; body ]
+            Html.span [
+                prop.className "question-number"
+                prop.text (sprintf "Вопрос %d из %d" (model.CurrentIndex + 1) total)
             ]
+            Html.p [ prop.className "question-text"; prop.text question.Text ]
+            questionBody model.Answers dispatch question
         ]
     ]
 
+let private navArrow (className: string) (label: string) (enabled: bool) (onClick: unit -> unit) =
+    Html.button [
+        prop.type'.button
+        prop.className (sprintf "nav-arrow %s" className)
+        prop.disabled (not enabled)
+        prop.onClick (fun _ -> onClick ())
+        prop.text label
+    ]
+
 let private timeRemainingBadge (seconds: int) =
     Html.span [
         prop.className (if seconds <= 60 then "time-remaining low" else "time-remaining")
@@ -130,6 +145,8 @@ let private timeRemainingBadge (seconds: int) =
     ]
 
 let view (model: Model) (dispatch: Msg -> unit) =
+    let total = List.length model.Data.Questions
+
     Html.div [
         prop.className "taking-quiz-page"
         prop.children [
@@ -138,7 +155,16 @@ let view (model: Model) (dispatch: Msg -> unit) =
             | Some err -> Html.p [ prop.className "error"; prop.text err ]
             | None -> Html.none
             Html.div [
-                prop.children (model.Data.Questions |> List.mapi (questionView model.Answers dispatch))
+                prop.className "question-nav"
+                prop.children [
+                    navArrow "nav-arrow-prev" "‹" (model.CurrentIndex > 0) (fun () ->
+                        dispatch (GoToQuestion(model.CurrentIndex - 1)))
+                    match model.Data.Questions |> List.tryItem model.CurrentIndex with
+                    | Some question -> questionCard model dispatch question
+                    | None -> Html.none
+                    navArrow "nav-arrow-next" "›" (model.CurrentIndex < total - 1) (fun () ->
+                        dispatch (GoToQuestion(model.CurrentIndex + 1)))
+                ]
             ]
             Html.div [
                 prop.className "quiz-actions"

src/Client/Features/Teacher/Tests/State.fs

@@ -175,34 +175,74 @@ let update (token: string option) (msg: Msg) (model: Model) : Model * Cmd<Msg> =
         { model with QuizForm = { model.QuizForm with ShuffleQuestions = value } }, Cmd.none
     | SetQuizShuffleAnswers value ->
         { model with QuizForm = { model.QuizForm with ShuffleAnswers = value } }, Cmd.none
-    | SelectPickerTopic topicId ->
-        let cmd =
-            Cmd.OfAsync.either
-                (Api.listQuestionsInTopic token)
-                topicId
-                (function
-                 | Ok questions -> PickerQuestionsLoaded questions
-                 | Error err -> PickerQuestionsLoadFailed err)
-                (fun ex -> PickerQuestionsLoadFailed ex.Message)
+    | ToggleTopicInPicker topicId ->
+        let form = model.QuizForm
 
-        let existingPoolCount =
-            model.QuizForm.Sources
-            |> List.tryPick (function
-                | PoolDraft(tid, count) when tid = topicId -> Some count
-                | _ -> None)
+        if form.PickerTopicIds.Contains topicId then
+            // Deselecting a topic drops it from the quiz entirely — its
+            // fixed picks and pool rule no longer apply.
+            let belongsToTopic qid =
+                form.PickerQuestions
+                |> List.tryFind (fun q -> q.Id = qid)
+                |> Option.map (fun q -> q.TopicId = topicId)
+                |> Option.defaultValue false
 
+            let sourcesWithoutTopic =
+                form.Sources
+                |> List.filter (function
+                    | PoolDraft(tid, _) -> tid <> topicId
+                    | FixedDraft qid -> not (belongsToTopic qid))
+
+            { model with
+                QuizForm =
+                    { form with
+                        PickerTopicIds = form.PickerTopicIds.Remove topicId
+                        PickerQuestions = form.PickerQuestions |> List.filter (fun q -> q.TopicId <> topicId)
+                        PoolCountTexts = form.PoolCountTexts.Remove topicId
+                        Sources = sourcesWithoutTopic } },
+            Cmd.none
+        else
+            let cmd =
+                Cmd.OfAsync.either
+                    (Api.listQuestionsInTopic token)
+                    topicId
+                    (function
+                     | Ok questions -> PickerQuestionsLoaded(topicId, questions)
+                     | Error err -> PickerQuestionsLoadFailed(topicId, err))
+                    (fun ex -> PickerQuestionsLoadFailed(topicId, ex.Message))
+
+            let existingPoolCount =
+                form.Sources
+                |> List.tryPick (function
+                    | PoolDraft(tid, count) when tid = topicId -> Some count
+                    | _ -> None)
+
+            let poolCountTexts =
+                match existingPoolCount with
+                | Some count -> form.PoolCountTexts |> Map.add topicId (string count)
+                | None -> form.PoolCountTexts
+
+            { model with
+                QuizForm =
+                    { form with
+                        PickerTopicIds = form.PickerTopicIds.Add topicId
+                        PickerLoadingTopics = form.PickerLoadingTopics.Add topicId
+                        PoolCountTexts = poolCountTexts } },
+            cmd
+    | PickerQuestionsLoaded(topicId, questions) ->
         { model with
             QuizForm =
                 { model.QuizForm with
-                    PickerTopicId = Some topicId
-                    PickerLoading = true
-                    PickerQuestions = []
-                    PoolCountText = existingPoolCount |> Option.map string |> Option.defaultValue "" } },
-        cmd
-    | PickerQuestionsLoaded questions ->
-        { model with QuizForm = { model.QuizForm with PickerQuestions = questions; PickerLoading = false } }, Cmd.none
-    | PickerQuestionsLoadFailed err ->
-        { model with QuizForm = { model.QuizForm with PickerLoading = false; Error = Some err } }, Cmd.none
+                    PickerQuestions = model.QuizForm.PickerQuestions @ questions
+                    PickerLoadingTopics = model.QuizForm.PickerLoadingTopics.Remove topicId } },
+        Cmd.none
+    | PickerQuestionsLoadFailed(topicId, err) ->
+        { model with
+            QuizForm =
+                { model.QuizForm with
+                    PickerLoadingTopics = model.QuizForm.PickerLoadingTopics.Remove topicId
+                    Error = Some err } },
+        Cmd.none
     | ToggleQuestionPick questionId ->
         let form = model.QuizForm
 
@@ -216,7 +256,7 @@ let update (token: string option) (msg: Msg) (model: Model) : Model * Cmd<Msg> =
                 form.Sources @ [ FixedDraft questionId ]
 
         { model with QuizForm = { form with Sources = next } }, Cmd.none
-    | SelectAllInTopic ->
+    | SelectAllInTopic topicId ->
         let form = model.QuizForm
 
         let alreadySelected =
@@ -228,31 +268,32 @@ let update (token: string option) (msg: Msg) (model: Model) : Model * Cmd<Msg> =
 
         let toAdd =
             form.PickerQuestions
+            |> List.filter (fun q -> q.TopicId = topicId)
             |> List.map (fun q -> q.Id)
             |> List.filter (alreadySelected.Contains >> not)
             |> List.map FixedDraft
 
         { model with QuizForm = { form with Sources = form.Sources @ toAdd } }, Cmd.none
-    | SetPoolCountText text -> { model with QuizForm = { model.QuizForm with PoolCountText = text } }, Cmd.none
-    | AddRandomPool ->
+    | SetPoolCountText(topicId, text) ->
+        { model with QuizForm = { model.QuizForm with PoolCountTexts = model.QuizForm.PoolCountTexts |> Map.add topicId text } },
+        Cmd.none
+    | AddRandomPool topicId ->
         let form = model.QuizForm
+        let text = form.PoolCountTexts |> Map.tryFind topicId |> Option.defaultValue ""
 
-        match form.PickerTopicId with
-        | None -> model, Cmd.none
-        | Some topicId ->
-            match System.Int32.TryParse form.PoolCountText with
-            | true, count when count > 0 ->
-                let withoutOldPool =
-                    form.Sources
-                    |> List.filter (function
-                        | PoolDraft(tid, _) -> tid <> topicId
-                        | _ -> true)
+        match System.Int32.TryParse text with
+        | true, count when count > 0 ->
+            let withoutOldPool =
+                form.Sources
+                |> List.filter (function
+                    | PoolDraft(tid, _) -> tid <> topicId
+                    | _ -> true)
 
-                { model with QuizForm = { form with Sources = withoutOldPool @ [ PoolDraft(topicId, count) ]; Error = None } },
-                Cmd.none
-            | _ ->
-                { model with QuizForm = { form with Error = Some "Количество случайных вопросов должно быть положительным числом" } },
-                Cmd.none
+            { model with QuizForm = { form with Sources = withoutOldPool @ [ PoolDraft(topicId, count) ]; Error = None } },
+            Cmd.none
+        | _ ->
+            { model with QuizForm = { form with Error = Some "Количество случайных вопросов должно быть положительным числом" } },
+            Cmd.none
     | RemoveRandomPool topicId ->
         let form = model.QuizForm
 
@@ -262,9 +303,7 @@ let update (token: string option) (msg: Msg) (model: Model) : Model * Cmd<Msg> =
                 | PoolDraft(tid, _) -> tid <> topicId
                 | _ -> true)
 
-        let poolCountText = if form.PickerTopicId = Some topicId then "" else form.PoolCountText
-
-        { model with QuizForm = { form with Sources = next; PoolCountText = poolCountText } }, Cmd.none
+        { model with QuizForm = { form with Sources = next; PoolCountTexts = form.PoolCountTexts.Remove topicId } }, Cmd.none
     | SubmitQuizForm ->
         match buildQuizFields model.QuizForm with
         | Error err -> { model with QuizForm = { model.QuizForm with Error = Some err } }, Cmd.none

src/Client/Features/Teacher/Tests/Types.fs

@@ -21,16 +21,19 @@ type QuizForm =
       PassingScoreText: string // empty = None
       ShuffleQuestions: bool
       ShuffleAnswers: bool
-      /// Accumulates across topic switches in the picker below — membership
-      /// alone decides the checkbox state, regardless of which topic's
+      /// Accumulates across topics selected in the picker below — membership
+      /// alone decides the checkbox state, regardless of which topics'
       /// questions are currently displayed.
       Sources: QuizSourceDraft list
-      PickerTopicId: TopicId option
+      /// Topics currently expanded in the picker — a test can draw questions
+      /// from any number of them at once.
+      PickerTopicIds: Set<TopicId>
+      /// Union of questions loaded for every topic in `PickerTopicIds`.
       PickerQuestions: QuestionSummary list
-      PickerLoading: bool
-      /// Draft text for "N случайных вопросов" of the topic currently open
-      /// in the picker — reset whenever the picker's topic changes.
-      PoolCountText: string
+      /// Topics whose questions are still being fetched.
+      PickerLoadingTopics: Set<TopicId>
+      /// Draft text for "N случайных вопросов", one per expanded topic.
+      PoolCountTexts: Map<TopicId, string>
       Error: string option
       IsSubmitting: bool }
 
@@ -43,34 +46,31 @@ let emptyQuizForm =
       ShuffleQuestions = false
       ShuffleAnswers = false
       Sources = []
-      PickerTopicId = None
+      PickerTopicIds = Set.empty
       PickerQuestions = []
-      PickerLoading = false
-      PoolCountText = ""
+      PickerLoadingTopics = Set.empty
+      PoolCountTexts = Map.empty
       Error = None
       IsSubmitting = false }
 
-/// Ids of `form.PickerQuestions` (the topic currently open in the picker)
-/// that are individually fixed-selected — used to enforce "fixed selection
-/// XOR random pool" per topic, one topic at a time.
-let fixedIdsInCurrentTopic (form: QuizForm) : QuestionId list =
-    let topicIds = form.PickerQuestions |> List.map (fun q -> q.Id) |> Set.ofList
+/// Loaded questions belonging to one topic.
+let questionsInTopic (form: QuizForm) (topicId: TopicId) : QuestionSummary list =
+    form.PickerQuestions |> List.filter (fun q -> q.TopicId = topicId)
 
+/// Whether a question is individually fixed-selected — used to enforce
+/// "fixed selection XOR random pool" per topic.
+let isFixedSelected (form: QuizForm) (questionId: QuestionId) : bool =
     form.Sources
-    |> List.choose (function
-        | FixedDraft qid when topicIds.Contains qid -> Some qid
-        | _ -> None)
+    |> List.exists (function
+        | FixedDraft qid -> qid = questionId
+        | _ -> false)
 
-/// The random-pool count configured for the topic currently open in the
-/// picker, if any.
-let poolCountForCurrentTopic (form: QuizForm) : int option =
-    match form.PickerTopicId with
-    | None -> None
-    | Some topicId ->
-        form.Sources
-        |> List.tryPick (function
-            | PoolDraft(tid, count) when tid = topicId -> Some count
-            | _ -> None)
+/// The random-pool count configured for a given topic, if any.
+let poolCountForTopic (form: QuizForm) (topicId: TopicId) : int option =
+    form.Sources
+    |> List.tryPick (function
+        | PoolDraft(tid, count) when tid = topicId -> Some count
+        | _ -> None)
 
 /// Total number of questions the quiz will actually have: one per fixed
 /// selection, plus each pool rule's `Count`.
@@ -162,13 +162,13 @@ type Msg =
     | SetQuizPassingScoreText of string
     | SetQuizShuffleQuestions of bool
     | SetQuizShuffleAnswers of bool
-    | SelectPickerTopic of TopicId
-    | PickerQuestionsLoaded of QuestionSummary list
-    | PickerQuestionsLoadFailed of string
+    | ToggleTopicInPicker of TopicId
+    | PickerQuestionsLoaded of TopicId * QuestionSummary list
+    | PickerQuestionsLoadFailed of TopicId * string
     | ToggleQuestionPick of QuestionId
-    | SelectAllInTopic
-    | SetPoolCountText of string
-    | AddRandomPool
+    | SelectAllInTopic of TopicId
+    | SetPoolCountText of TopicId * string
+    | AddRandomPool of TopicId
     | RemoveRandomPool of TopicId
     | SubmitQuizForm
     | QuizSaved of QuizAdminSummary

src/Client/Features/Teacher/Tests/View.fs

@@ -203,16 +203,16 @@ let private resultsView (model: Model) dispatch =
         ]
     ]
 
-/// Summary of every configured random-pool rule, across all topics — needed
-/// because the picker below only shows one topic's questions at a time, so
-/// without this list, switching the topic dropdown away would make an
-/// already-configured pool rule invisible.
+/// Summary of configured random-pool rules whose topic isn't currently
+/// expanded in the picker below (e.g. right after opening an existing quiz
+/// for editing) — without this, such a pool rule would be invisible until
+/// its topic checkbox is ticked again.
 let private poolRulesSummary (model: Model) dispatch =
     let pools =
         model.QuizForm.Sources
         |> List.choose (function
-            | PoolDraft(topicId, count) -> Some(topicId, count)
-            | FixedDraft _ -> None)
+            | PoolDraft(topicId, count) when not (model.QuizForm.PickerTopicIds.Contains topicId) -> Some(topicId, count)
+            | _ -> None)
 
     if pools.IsEmpty then
         Html.none
@@ -241,33 +241,33 @@ let private poolRulesSummary (model: Model) dispatch =
             ]
         ]
 
-let private questionPicker (model: Model) dispatch =
+/// One expanded topic's slice of the picker: either its fixed-question
+/// checkboxes, or its random-pool config, plus the "N нет вопросов"/loading
+/// states.
+let private topicPickerSection (model: Model) dispatch topicId =
     let form = model.QuizForm
-    let poolForTopic = poolCountForCurrentTopic form
-    let fixedInTopic = fixedIdsInCurrentTopic form
+    let topicName =
+        model.Topics
+        |> List.tryFind (fun t -> t.Id = topicId)
+        |> Option.map (fun t -> t.Name)
+        |> Option.defaultValue "?"
+
+    let topicQuestions = questionsInTopic form topicId
+    let poolCount = poolCountForTopic form topicId
+    let fixedInTopic = topicQuestions |> List.map (fun q -> q.Id) |> List.filter (isFixedSelected form)
+    let poolCountText = form.PoolCountTexts |> Map.tryFind topicId |> Option.defaultValue ""
 
     Html.div [
-        prop.className "question-picker"
+        prop.key (string topicId)
+        prop.className "topic-picker-section"
         prop.children [
-            Html.label [ prop.text "Тема" ]
-            Html.select [
-                prop.value (form.PickerTopicId |> Option.map string |> Option.defaultValue "")
-                prop.onChange (fun (v: string) ->
-                    model.Topics
-                    |> List.tryFind (fun t -> string t.Id = v)
-                    |> Option.iter (fun t -> dispatch (SelectPickerTopic t.Id)))
-                prop.children [
-                    Html.option [ prop.value ""; prop.text "— выберите тему —" ]
-                    for topic in model.Topics do
-                        Html.option [ prop.key (string topic.Id); prop.value (string topic.Id); prop.text topic.Name ]
-                ]
-            ]
-            if form.PickerLoading then
+            Html.h4 topicName
+            if form.PickerLoadingTopics.Contains topicId then
                 Html.p "Загрузка вопросов…"
-            elif form.PickerTopicId.IsSome && form.PickerQuestions.IsEmpty then
+            elif topicQuestions.IsEmpty then
                 Html.p "В этой теме нет вопросов"
-            elif form.PickerTopicId.IsSome then
-                match poolForTopic with
+            else
+                match poolCount with
                 | Some count ->
                     Html.div [
                         prop.className "pool-picker"
@@ -280,18 +280,17 @@ let private questionPicker (model: Model) dispatch =
                             Html.input [
                                 prop.type'.text
                                 prop.className "pool-count-input"
-                                prop.value form.PoolCountText
-                                prop.onChange (SetPoolCountText >> dispatch)
+                                prop.value poolCountText
+                                prop.onChange (fun v -> dispatch (SetPoolCountText(topicId, v)))
                             ]
                             Html.button [
                                 prop.type'.button
-                                prop.onClick (fun _ -> dispatch AddRandomPool)
+                                prop.onClick (fun _ -> dispatch (AddRandomPool topicId))
                                 prop.text "Обновить количество"
                             ]
                             Html.button [
                                 prop.type'.button
-                                prop.onClick (fun _ ->
-                                    form.PickerTopicId |> Option.iter (RemoveRandomPool >> dispatch))
+                                prop.onClick (fun _ -> dispatch (RemoveRandomPool topicId))
                                 prop.text "Убрать случайный набор, выбирать вручную"
                             ]
                         ]
@@ -301,7 +300,7 @@ let private questionPicker (model: Model) dispatch =
                         prop.children [
                             Html.div [
                                 prop.children [
-                                    for q in form.PickerQuestions ->
+                                    for q in topicQuestions ->
                                         Html.label [
                                             prop.key (string q.Id)
                                             prop.className "student-row"
@@ -318,7 +317,7 @@ let private questionPicker (model: Model) dispatch =
                             ]
                             Html.button [
                                 prop.type'.button
-                                prop.onClick (fun _ -> dispatch SelectAllInTopic)
+                                prop.onClick (fun _ -> dispatch (SelectAllInTopic topicId))
                                 prop.text "Выбрать все вопросы темы"
                             ]
                             Html.p "или задать случайный набор вместо ручного выбора:"
@@ -326,13 +325,13 @@ let private questionPicker (model: Model) dispatch =
                                 prop.type'.text
                                 prop.className "pool-count-input"
                                 prop.placeholder "Число вопросов"
-                                prop.value form.PoolCountText
-                                prop.onChange (SetPoolCountText >> dispatch)
+                                prop.value poolCountText
+                                prop.onChange (fun v -> dispatch (SetPoolCountText(topicId, v)))
                             ]
                             Html.button [
                                 prop.type'.button
                                 prop.disabled (not fixedInTopic.IsEmpty)
-                                prop.onClick (fun _ -> dispatch AddRandomPool)
+                                prop.onClick (fun _ -> dispatch (AddRandomPool topicId))
                                 prop.text "Добавить случайный набор из этой темы"
                             ]
                             if not fixedInTopic.IsEmpty then
@@ -342,8 +341,42 @@ let private questionPicker (model: Model) dispatch =
                                 ]
                         ]
                     ]
+        ]
+    ]
+
+let private questionPicker (model: Model) dispatch =
+    let form = model.QuizForm
+
+    Html.div [
+        prop.className "question-picker"
+        prop.children [
+            Html.label [ prop.text "Темы (можно выбрать несколько)" ]
+            Html.div [
+                prop.className "topic-checkbox-list"
+                prop.children [
+                    for topic in model.Topics ->
+                        Html.label [
+                            prop.key (string topic.Id)
+                            prop.className "student-row"
+                            prop.children [
+                                Html.input [
+                                    prop.type'.checkbox
+                                    prop.isChecked (form.PickerTopicIds.Contains topic.Id)
+                                    prop.onChange (fun (_: bool) -> dispatch (ToggleTopicInPicker topic.Id))
+                                ]
+                                Html.text topic.Name
+                            ]
+                        ]
+                ]
+            ]
+            if form.PickerTopicIds.IsEmpty then
+                Html.p [
+                    prop.className "hint"
+                    prop.text "Выберите одну или несколько тем, из которых будут вопросы теста"
+                ]
             else
-                Html.none
+                for topicId in form.PickerTopicIds |> Set.toList do
+                    topicPickerSection model dispatch topicId
             poolRulesSummary model dispatch
             Html.span [
                 prop.className "tag-mono"

src/Client/style.css

@@ -297,28 +297,27 @@ a {
 /* ============================================================
    Taking a quiz
    ============================================================ */
-.question {
+.question-nav {
   display: flex;
-  gap: 1rem;
-  border-top: 1px solid var(--line);
-  padding: 1.25rem 0;
+  align-items: center;
+  gap: 0.75rem;
 }
 
-.question:first-of-type {
-  border-top: none;
+.question-card {
+  flex: 1;
+  min-width: 0;
+  background: var(--surface);
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  padding: 1.5rem;
 }
 
 .question-number {
+  display: block;
   font-family: var(--font-mono);
   font-size: 0.85rem;
   color: var(--brass);
-  flex-shrink: 0;
-  padding-top: 0.15rem;
-}
-
-.question-body {
-  flex: 1;
-  min-width: 0;
+  margin-bottom: 0.6rem;
 }
 
 .question-text {
@@ -326,6 +325,23 @@ a {
   margin-bottom: 0.6rem;
 }
 
+.nav-arrow {
+  flex-shrink: 0;
+  width: 2.5rem;
+  height: 2.5rem;
+  padding: 0;
+  font-size: 1.3rem;
+  line-height: 1;
+  border-radius: 50%;
+  background: var(--surface);
+  color: var(--ink);
+  border: 1px solid var(--line);
+}
+
+.nav-arrow:hover:not(:disabled) {
+  background: var(--brass-soft);
+}
+
 .option {
   display: flex;
   align-items: center;
@@ -730,6 +746,24 @@ a {
   padding: 0.3rem 0;
 }
 
+.topic-checkbox-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0 1rem;
+  margin-bottom: 0.5rem;
+}
+
+.topic-picker-section {
+  border: 1px solid var(--line);
+  border-radius: var(--radius);
+  padding: 0.75rem 1rem;
+  margin-bottom: 0.75rem;
+}
+
+.topic-picker-section h4 {
+  margin: 0 0 0.5rem;
+}
+
 /* ---- Modal overlay (quiz create/edit form) ---- */
 
 .modal-backdrop {