{
  "chapter_id": "01",
  "slug": "the-introduction",
  "title": "The Introduction",
  "time_range_sec": [0, 64],
  "summary": "Author introduces the 4-hour compilation video as a stitched collection of every prior Spanish-fundamentals video on his channel, with two intentionally omitted topics (gustar-style verbs; qué vs. cuál; c vs. qu).",
  "suggested_grammar_note_id": null,
  "rules": [],
  "examples": [],
  "vocab": [],
  "conjugation_tables": [],
  "exercises": [],
  "caveats": "Intro chapter; no teachable grammar content."
}