practice UI: the dock, the transcript cards, layered-Esc discard
- PracticeDock (components/practice-dock.tsx): the active problem replaces the composer — statement (markdown+LaTeX) above, the 'Your thinking' composer-twin below with the two submit lanes (Nudge = thinking without a commit; Commit = answer commit; ⌘/Ctrl+Enter commits). Dictation claims the thinking field. - Transcript cards (practice-cards.tsx + the artifact registry): the problem card (compact-expandable statement — the commitment NEVER renders), the conclude card (outcome + verdict + reveal; the dismissal synthesis is one muted line), and the user-side thinking register cards (Your thinking / Your solution). - view.ts: the problem pose joins the placeholder fork (the ack never flips the part); practice-thinking markers project as data parts; problem-dismissed markers project nothing. - chat.tsx: activeProblemOf drives the dock branch (question > problem > composer), the esc layering gains the problem rung (below question, above turn) with its discard confirm + the silent marker route; the thinking submissions POST through the session's optimistic appends.
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"use client";
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import { useState } from "react";
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import { ChevronRightIcon } from "lucide-react";
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import { MessageResponse } from "@/components/ai-elements/message";
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import type { ArtifactPartProps } from "@/src/core";
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import { cn } from "@/lib/utils";
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/**
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* The practice transcript cards (practice sessions, owner design
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* 2026-10-04): three quiet records in the stream —
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*
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* - ProblemCard — a posed problem: the statement, compact-expandable
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* (like every card here; the dock is the working surface, this is the
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* record). The commitment NEVER renders — only the call's statement.
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* - ConcludeCard — the conclusion: outcome badge + verdict + the reveal
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* (the committed solution, shown when the problem ended). A dismissal
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* synthesis (outcome:"dismissed") renders as one muted line.
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* - ThinkingCard — the learner's own submission, user-side: the register
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* is the two buttons' (Nudge = working trace, Commit = answer).
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*/
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/** The practice-thinking marker's details (native-messages.ts). */
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export interface PracticeThinkingData {
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problemCallId: string;
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commit: boolean;
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text: string;
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}
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export function ProblemCard({ part }: ArtifactPartProps) {
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const [open, setOpen] = useState(false);
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const input = (part.input ?? {}) as { statement?: string };
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const statement = typeof input.statement === "string" ? input.statement : "";
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return (
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<div data-testid="problem-card" className="my-1">
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<button
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type="button"
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onClick={() => setOpen((v) => !v)}
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className="flex w-full cursor-pointer items-center gap-2 rounded-lg border border-border/60 bg-card/60 px-3 py-2 text-left text-sm text-muted-foreground transition-colors hover:text-foreground"
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>
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<ChevronRightIcon className={cn("size-4 shrink-0 transition-transform", open && "rotate-90")} />
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<span className="font-medium">Problem</span>
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<span className="min-w-0 flex-1 truncate">{statement}</span>
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</button>
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{open && (
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<div className="lh-prose mt-1 rounded-lg border border-border/60 bg-card/60 px-4 py-3 text-[15px]">
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<MessageResponse>{statement}</MessageResponse>
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</div>
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)}
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</div>
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);
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}
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const OUTCOME_LABEL: Record<string, string> = {
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solved: "Solved",
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solvedWithHints: "Solved with hints",
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movedOn: "Moved on",
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surrendered: "Surrendered",
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dismissed: "Dismissed",
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};
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export function ConcludeCard({ part }: ArtifactPartProps) {
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const [open, setOpen] = useState(false);
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const input = (part.input ?? {}) as {
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outcome?: string;
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verdict?: string;
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solutionReveal?: string;
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};
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const outcome = typeof input.outcome === "string" ? input.outcome : "";
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const verdict = typeof input.verdict === "string" ? input.verdict : "";
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const reveal = typeof input.solutionReveal === "string" ? input.solutionReveal : "";
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// The dismissal synthesis: no verdict, no reveal — one muted line (the
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// learner clicked; the record needs only the fact).
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if (outcome === "dismissed") {
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return (
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<div data-testid="conclude-card" className="my-1 px-1 text-sm text-muted-foreground/70">
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Problem dismissed.
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</div>
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);
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}
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return (
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<div data-testid="conclude-card" className="my-1">
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<button
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type="button"
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onClick={() => setOpen((v) => !v)}
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className="flex w-full cursor-pointer items-center gap-2 rounded-lg border border-border/60 bg-card/60 px-3 py-2 text-left text-sm text-muted-foreground transition-colors hover:text-foreground"
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>
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<ChevronRightIcon className={cn("size-4 shrink-0 transition-transform", open && "rotate-90")} />
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<span className="font-medium">{OUTCOME_LABEL[outcome] ?? "Concluded"}</span>
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<span className="min-w-0 flex-1 truncate">{verdict}</span>
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</button>
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{open && (
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<div className="mt-1 space-y-2 rounded-lg border border-border/60 bg-card/60 px-4 py-3 text-[15px]">
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{verdict.length > 0 && (
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<div className="text-sm text-foreground">
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<MessageResponse>{verdict}</MessageResponse>
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</div>
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)}
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{reveal.length > 0 && (
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<div className="border-t border-border/50 pt-2">
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<div className="mb-1 text-xs font-medium uppercase tracking-wide text-muted-foreground">
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The solution
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</div>
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<div className="lh-prose">
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<MessageResponse>{reveal}</MessageResponse>
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</div>
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</div>
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)}
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</div>
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)}
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</div>
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);
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}
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export function ThinkingCard({ data }: { data: PracticeThinkingData }) {
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const [open, setOpen] = useState(true);
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return (
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<div
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data-testid="thinking-card"
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data-commit={data.commit ? "true" : "false"}
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className="ml-auto max-w-[85%] rounded-2xl border border-border/60 bg-muted/40 px-4 py-3"
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>
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<button
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type="button"
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onClick={() => setOpen((v) => !v)}
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className="flex w-full cursor-pointer items-center gap-2 text-left text-xs font-medium uppercase tracking-wide text-muted-foreground"
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>
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{data.commit ? "Your solution" : "Your thinking"}
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<ChevronRightIcon className={cn("size-3.5 shrink-0 transition-transform", open && "rotate-90")} />
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</button>
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{open && (
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<div className="mt-1.5 whitespace-pre-wrap text-[15px]">{data.text}</div>
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)}
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</div>
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);
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}
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