context: main
allowed-tools: Read, Write, Edit, Bash, AskUserQuestion

/narration-build {topic}

# Narration Script: {Topic Title}

Class: {N}
Voice: {voice name from config}
Generated: {date}

## Script Guidelines

- Conversational, not robotic
- Pause notation: [pause] for 0.5s, [long pause] for 1s
- Emphasis: *word* for stress
- Speed: Default pace, adjust with [slower] or [faster]

## Slide Scripts

### Slide 1: {Title}

**Duration**: ~{X} seconds

```text
{Narration text for this slide}

{Narration text}

### Step 4: Review Script Quality

Before generating audio, verify:
- [ ] Natural conversational tone
- [ ] Matches what's on slides (doesn't just read them)
- [ ] Adds context and explanation
- [ ] Appropriate pacing for students
- [ ] Technical terms pronounced correctly
- [ ] Transitions between concepts smooth

### Step 5: Generate Audio Files

Create audio directory:
```bash
mkdir -p public/audio/class-{n}

curl -X POST "https://api.elevenlabs.io/v1/text-to-speech/{voice_id}" \
  -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "{slide script text}",
    "model_id": "eleven_multilingual_v2",
    "voice_settings": {
      "stability": 0.5,
      "similarity_boost": 0.75
    }
  }' \
  --output "public/audio/class-{n}/slide-{nn}.mp3"

// Audio playback integration
const slideAudio = {
  1: 'slide-01.mp3',
  2: 'slide-02.mp3',
  // ...
};

let currentAudio = null;

function playSlideAudio(slideNum) {
  if (currentAudio) {
    currentAudio.pause();
  }
  const audioFile = slideAudio[slideNum];
  if (audioFile) {
    currentAudio = new Audio(`/audio/class-{n}/${audioFile}`);
    currentAudio.play();
  }
}

// Hook into navigation
const originalGoToSlide = window.Presentation.goToSlide;
window.Presentation.goToSlide = function(n) {
  originalGoToSlide(n);
  playSlideAudio(n + 1); // Slides are 1-indexed in audio
};

<div class="audio-controls">
  <button onclick="toggleAudio()" id="audio-toggle">🔊</button>
  <button onclick="replayAudio()">↻</button>
</div>

{
  "class": {N},
  "topic": "{topic}",
  "voice": "{voice name}",
  "generated": "{date}",
  "totalDuration": "{X:XX}",
  "slides": [
    {
      "slide": 1,
      "file": "slide-01.mp3",
      "duration": 45,
      "text": "{first 50 chars}..."
    }
  ]
}

{
  "narration": {
    "provider": "elevenlabs",
    "voiceId": "{voice-id}",
    "defaultVoice": "Rachel"
  }
}

TAM: Total Addressable Market
The total revenue opportunity if you achieved 100% market share

TAM stands for Total Addressable Market. It's the total revenue
opportunity if you achieved 100% market share.

Let's start with TAM [pause] your Total Addressable Market.
Think of this as the absolute maximum [pause] the total pie
if somehow every single potential customer bought from you.
[pause] Now, this is a theoretical ceiling, not a goal.
No company actually captures 100% of their TAM.

# Narration Script: Market Sizing

Class: 4
Voice: Rachel
Generated: 2026-01-20

## Slide Scripts

### Slide 1: Title

**Duration**: ~10 seconds

```text
Welcome to Class Four [pause] where we're going to tackle
one of the most important questions in entrepreneurship:
[pause] How big is your market?

Now here's a visualization that will help you remember these
three levels. [pause]

At the top, we have TAM [pause] your Total Addressable Market.
It's the widest part of the funnel because it represents
everyone who could theoretically use your product.

[pause]

As we narrow down, we get to SAM [pause] your Serviceable
Available Market. This is the portion you can actually reach
with your current business model.

[pause]

And finally, SOM [pause] your Serviceable Obtainable Market.
This is your realistic first-year target [pause] the slice
you can actually capture given your resources.