# Milestone 5 demo narration

Status: production source

Machine-readable authority:
`config/experiments/build_week_vnext/milestone5_video.json`

Voice: `en-US-AvaNeural`

Rate: `+15%`

The narration is first-person singular because Chartsmith is a solo submission.
It preserves the user's motivation, distinguishes the public showcase from the
local generation workflow, and avoids claims of exact data recovery.

## Script

### 1. Why Chartsmith

A busy audience reads a chart before its explanation. I learned that with a
very busy boss. Strong visualization focuses attention, compresses complexity,
and makes one important point land immediately.

### 2. One image

Chartsmith starts with only the chart image. No raw data, design brief, or
follow-up questions. It uses modern image understanding to recover visual
evidence, then makes a stronger communication decision for the user.

### 3. Reconstruction

First, the system reconstructs what is visible and uncertain. Here it identifies
sixty marks, opposite endpoint concentration, and a clipped value it cannot
safely invent. Uncertainty is preserved without becoming an excuse for timid
design.

### 4. Exploration

Next, GPT-5.6 proposes three different visual arguments. It selects Endpoint
Gravity because the composition expresses the finding. This is not a library
restyle; the system can invent details conventional chart functions make
awkward.

### 5. Render

The selected direction becomes real pixels. A full-scale view keeps honest
zero-based context, while a labeled magnified lens restores suppressed
comparisons. The message becomes faster without pretending the recovered values
are exact.

### 6. Inspection

An independent inspector reviews the actual image at audience display sizes. It
found text that became too small and a gridline crossing a callout. Those visual
defects block release, even when the idea is good.

### 7. Repair

Chartsmith repairs the named failure instead of redesigning everything. Two
targeted corrections improve readability and callout integrity. The user never
manages the loop, and the system cannot release while a visible blocker remains.

### 8. Release

Release requires production integrity, evidence integrity, communication gain,
authored design, and GPT-5.6 provenance. This result passed every hard gate at
both supplied display sizes. The workflow ends only when the chart is ready to
communicate.

### 9. Codex collaboration

During Build Week, Codex was my engineering and product collaborator. Together
we separated old experiments from the promoted system, designed the workflow,
ran real cases, diagnosed failures, built the public experience, and verified
the release.

### 10. GPT-5.6

Inside Chartsmith, GPT-5.6 handles visual judgments: reconstruction, concept
choice, rendered-image inspection, repair, and final comparison. The surrounding
scheduler stays deterministic, making model intelligence powerful where it
matters and auditable everywhere else.

### 11. Range

The portfolio contains ten accepted journeys across ten chart grammars, from
ranked bars and scatter panels to heatmaps, funnels, uncertainty, and composition
over time. They required twenty-six targeted repairs. A fair single-call
baseline shows why the system earns its complexity.

### 12. Close

The public showcase exposes every accepted intermediate result. Full autonomous
generation remains a genuine local workflow, not a simulated hosted demo.
Chartsmith asks how far rational visual judgment can go when allowed to be
ambitious. One chart image. One stronger story.
