course-builder

Final build step — render all Marp slides, validate SSML, synthesize the course manifest, and package bundle.zip. Use when coherence review has passed and the course is ready for deployment. Triggered by the asset-builder agent.

Orchestrate end-to-end online course generation from a topic. Invoke when user asks to "create a course", "design a curriculum", "build online lectures", "강의 만들어", "코스 설계", "커리큘럼 짜", "섹션별 퀴즈 포함 강의", "TTS 스크립트 강의", or any request to produce structured learning material with slides + notes + scripts + quizzes. Also invoke for follow-ups — "재실행", "섹션만 다시", "업데이트", "이전 결과 개선", "코스 수정". Do NOT invoke for single-artifact requests (just a slide, just a quiz) — those should call the specific authoring skill directly.

Synthesize TTS audio from course transcripts with pluggable engines (OpenAI gpt-4o-mini-tts default, edge-tts fallback). Use when turning a class transcript.txt into per-slide MP3s plus a concatenated full.mp3, handling [slide N] / [pause:ms] markers, retries, and per-slide speaker_affect overlays. Triggered after coherence-review passes and before/within asset-build, or as a standalone step. Also invoke for "오디오 생성", "TTS 합성", "강의 음성 만들어", "voice 변경", "speed 조정".

Write TTS-ready transcripts with [slide N] cues, [pause:ms] markers, and optional SSML. Convert raw code/URLs/long numbers to speakable forms. Use when turning slides+beats into a narrator script. Triggered by the script-writer agent.

Author slide decks in Marp Markdown and render to HTML. Use when turning class beats into 4-7 slides per class, applying Marp frontmatter/layout rules, preventing overflow, or rendering via the marp CLI. Triggered by the slide-author agent.

Cross-artifact QA for the course pipeline. Verify LO coverage, Bloom balance, slide↔script cue alignment, note↔slide consistency, tone, quiz factual validity, and transcript speakability. Use when reviewing generated course assets before build. Triggered by the coherence-reviewer agent.

Plan a single class as a beat sheet (hook → teach → example → practice → recap) used jointly by slide, note, and script authors. Use when turning a class spec into beats, allocating duration across beats, or assigning visual/speaker cues. Triggered by the class-planner agent.

Design course-level and section-level curriculum scaffolding. Use when writing Learning Objectives, choosing Bloom's Taxonomy levels, splitting a topic into sections, or breaking sections into classes. Triggered by curriculum-architect and section-designer agents.

Write lecture notes in Markdown (400-900 words) with Intro/Concept/Example/Pitfalls/Recap structure and cross-references to slides. Use when turning class beats into a study-ready note.md document. Triggered by the note-writer agent.

Generate section-level quizzes (5-9 items) with Bloom balance, plausible distractors, LO mapping, and required explanations. Use when creating quiz.json after all classes in a section are complete. Triggered by the quiz-master agent.