ToCode: post #6040 — TG.ME

class Lesson(BaseModel):
    index: int = Field(description="1-based lesson number within this chunk")

class Lesson(BaseModel):
    """A single lesson extracted from the course video."""

    index: int = Field(description="1-based lesson number within this chunk")
    start_timestamp: str = Field(
        description="Start time relative to THIS CHUNK as HH:MM:SS, e.g. '00:02:30'"
    )
    end_timestamp: str = Field(
        description="End time relative to THIS CHUNK as HH:MM:SS, e.g. '00:14:45'"
    )
    is_break: bool = Field(
        default=False,
        description=(
            "True if this segment is a BREAK with no teaching content — e.g. "
            "students chatting, silence, instructor away, coffee/lunch break. "
            "False for a normal lesson."
        ),
    )
    slug: str = Field(
        description=(
            "URL-safe slug for the lesson, e.g. 'intro-to-pydantic'. "
            "If is_break is True, this is ignored (the slug 'breaktime' is "
            "applied automatically) — still provide a placeholder value."
        )
    )
    title: str = Field(description="Lesson title in the original language")
    summary_markdown_hebrew: str = Field(
        description=(
            "A full, self-contained lesson write-up in Hebrew markdown, written so "
            "that someone who never watched the video can read it and actually "
            "learn the material — NOT a table of contents or a bullet-point index "
            "of what was covered. Write it like an article/tutorial: "
            "Structure it as numbered sections ('### 1. <topic title>', "
            "'### 2. <topic title>', ...), one per sub-topic covered in the "
            "lesson, in the order they were taught. Under each heading, write "
            "full explanatory paragraphs in flowing Hebrew prose that actually "
            "teach the concept (what it is, why it matters, how it works) the "
            "way the instructor explained it — not short summaries or fragments. "
            "Include exact code shown in the video in fenced code blocks, "
            "including commands, filenames, and terminal output where relevant, "
            "each with a sentence or two explaining what the code does and why. "
            "Include any links or external references mentioned, and end with "
            "practical conclusions/recommendations if the instructor gave any. "