Add interactive AI chat quizzes

[pirajoke]

Outcome

• routes Lexi's quick-quiz starter and explicit multilingual quiz requests to a native five-question Telegram test
• alternates word-to-meaning and meaning-to-word answer buttons with immediate feedback
• adds a per-answer final review and actions to retry, start another test, or continue the AI conversation
• activates reviewed Mirror v10 guidance so typed practice varies between dialogue, choice, cloze, ordering, correction, and free response without repeating the last task

Safety and persistence

• reuses the existing durable native block, SRS, XP, stale-callback, and idempotency path
• no schema change and no AI provider call is required for the deterministic quiz
• preserves unrelated local research changes

Verification

• focused affected suite: 151 tests green
• full suite: 1229 tests green, 3 skipped
• compileall and git diff --check green

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-21T08:25:30.037376Z	b2e00ec	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: b2e00eceb7

ℹ️ About Codex in GitHub

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[chatgpt-codex-connector]

Exclude completed quizzes when seeding a new test

When the learner clicks the newly added “New test” button after completing an AI quiz, block_pack_id still matches and block_all_indices still contains the five completed words. These lines fill all five slots before due_word_indices() or pick_block() can contribute, so every new test repeats the identical words and lets repeated attempts inflate their SRS counts and XP. Reuse an active block only while it is genuinely in progress, or exclude the completed AI quiz when handling this action.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Suppress answer audio for reverse-recall questions

Whenever TTS succeeds, each odd-position reverse question displays only the meaning here but block_send_question_msg() subsequently calls send_pronunciation(..., idx, ...) unconditionally. That audio speaks the correct target word twice—and the audio fallback can display it as the title—before the learner chooses an answer, invalidating half of the quiz and recording assisted answers as genuine SRS results. Delay or omit pronunciation until after answering when block_quiz_direction() is target.

Useful? React with 👍 / 👎.