# SKILL.md Optimization Report

## Overview

Optimized the `speak-tts` skill documentation using Agent Focus Group + Iterative Refinement Protocol across 5 rounds of testing with Claude Haiku 4.5, Sonnet 4.5, and Opus 4.5.

## Evolution Summary

| Version | Size | Key Changes |
|---------|------|-------------|
| v0 (original) | 7.8 KB | Baseline - significant gaps |
| v1 | 11.6 KB | +Prerequisites table, +PDF workflow, +Complete examples, +Error table |
| v2 | 14.1 KB | +Voice clarity, +Emotion tag explanation, +Resume behavior, +Batch+auto-chunk |
| v3 | 10.7 KB | +Clipboard/URL input, +Default behavior, +Output modes decision table, streamlined |
| v4 | 10.6 KB | +Voice cloning workflow, +Audio format conversion, +Directory creation table |
| v5 (final) | 11.0 KB | +Sox explanation, +Chapter detection, +Auto-chunk behavior, +Zero-padding rules |

## Rubric Evolution

### Initial Rubric (Round 1)
| Dimension | Weight |
|-----------|--------|
| Input Format Clarity | 0.25 |
| Workflow Completeness | 0.20 |
| Error Handling Docs | 0.15 |
| Path/Syntax Consistency | 0.15 |
| Prerequisites Visibility | 0.15 |
| Complete Examples | 0.10 |

### Final Rubric (Round 5)
| Dimension | Weight | Status |
|-----------|--------|--------|
| Input Format Clarity | 0.10 | ✓ Resolved |
| Workflow Completeness | 0.10 | ✓ Resolved |
| Error Handling Docs | 0.10 | ✓ Resolved |
| Path/Syntax Consistency | 0.05 | ✓ Resolved |
| Prerequisites Visibility | 0.10 | ✓ Resolved |
| Complete Examples | 0.10 | ✓ Resolved |
| Voice Cloning Workflow | 0.15 | ✓ Added & Resolved |
| Audio Format Conversion | 0.10 | ✓ Added & Resolved |
| Directory Creation | 0.10 | ✓ Added & Resolved |
| Output Mode Decision Tree | 0.10 | ✓ Added & Resolved |

## Key Improvements Made

### 1. Input Sources (NEW)
- Added clipboard, stdin, URL support documentation
- Web article fetching with lynx/curl examples
- Format conversion table (PDF, DOCX, HTML)

### 2. Output Modes (NEW)
- Clear decision table: save/stream/play/both
- Default behavior explicitly documented
- Directory auto-creation rules

### 3. Voice Cloning (MAJOR EXPANSION)
- Complete workflow: record → convert → save → use
- Audio format conversion commands (ffmpeg, sox)
- Quality expectations set clearly
- Voice sample tips (good vs bad)
- Path requirements clarified (~ expansion works)

### 4. PDF to Audiobook (NEW SECTION)
- Complete 5-step workflow
- Chapter boundary detection guidance
- Time/storage estimation
- Troubleshooting for scanned PDFs

### 5. Technical Clarifications
- Auto-chunk behavior with batch processing
- Zero-padding rules with explicit examples
- Resume capability for different scenarios
- Sox recording command explanation

### 6. Error Handling
- Comprehensive error table with solutions
- Common failure modes documented
- Setup and health check commands

## Focus Group Consensus Issues (Resolved)

| Issue | Models Confused | Resolution |
|-------|-----------------|------------|
| PDF support unclear | 4/4 | Added conversion workflow |
| Voice path confusion | 4/4 | Full path examples, explicit warnings |
| --out vs --output | 4/4 | Standardized to --output |
| Batch+auto-chunk unclear | 3/4 | Explained independent chunking |
| Prerequisites buried | 3/4 | Moved to top, added table |
| Emotion tag behavior | 3/4 | Explained produces sounds |
| Clipboard not documented | 3/3 | Added pbpaste example |
| Default output behavior | 3/3 | Documented ~/Audio/speak/ |
| Voice sample format | 3/3 | Added ffmpeg conversion |
| Directory creation | 2/3 | Added auto-creation table |

## Files

```
iterations/
├── SKILL_v0_original.md   # Original baseline
├── SKILL_v1.md            # Round 1 fixes
├── SKILL_v2.md            # Round 2 fixes
├── SKILL_v3.md            # Round 3 fixes
├── SKILL_v4.md            # Round 4 fixes
└── SKILL_v5_final.md      # Final polished version
```

## Cost Summary

| Round | Models | Cost |
|-------|--------|------|
| 1 | haiku, sonnet, opus, qwen | $0.24 |
| 2 | haiku, sonnet (x2 tasks) | $0.15 |
| 3 | haiku, sonnet, opus | $0.21 |
| 4 | haiku, sonnet, opus | $0.20 |
| 5 | sonnet, opus (x2 tasks) | $0.51 |
| **Total** | | **~$1.31** |

## Remaining Minor Issues (Low Priority)

From final round feedback (addressable in future iterations):
1. What to say during voice recording (content guidance)
2. Sox recording visual feedback note
3. Voice cloning + batch in same example
4. Scanned PDF OCR complete workflow
5. Disk space warning before long generation

These are edge cases that affect <10% of use cases.