quick-fixes round: quiz-only teach-check reveal, ESC-abort confirm popup + question dismissal, confidence prompt diet

- requiresReveal gates on pending.tool === 'quiz' (owner: only graded quizzes
  arrive collapsed; ask/explain always open)
- ESC-abort chain opens AbortTurnDialog everywhere (owner ruling); from a
  pending question abort IS dismissal — dismissedAnswer rides the answer
  path, the teacher acknowledges the skip in its next turn; popup-Esc is
  claimed via the state gate (two window listeners fire per Esc)
- 25-confidence.md: stripped the slider/JSON/calibration mechanics — pure
  reading doctrine remains
- toolQuestionKind named once in core (dock parity), dock switched to it

src/core/pending.ts

@@ -41,6 +41,12 @@ export interface PendingToolCall {
 /** Tools that render in the question dock and gate the composer. */
 export const QUESTION_TOOLS = ["quiz", "ask_user_question", "explain"] as const;
 
+/** The tool→kind map (the dock's own fold, named once — the dismissal
+ *  path and the dock must never disagree on what a tool is). */
+export function toolQuestionKind(tool: string): "quiz" | "ask" | "explain" {
+	return tool === "quiz" ? "quiz" : tool === "explain" ? "explain" : "ask";
+}
+
 /** Tools fulfilled by background sub-agent jobs (W2/W6). */
 export const JOB_TOOLS = ["research", "demo", "visual"] as const;