# Hero proof: change a real product UI issue and hand it to engineering
## User belief to change
Every AI tool demos well, but none fit my real product stack, preserve context, or produce something engineering can trust.
## Current environment
The viewer is AI-tool fatigued: hundreds of tools, lots of “production-ready” claims, partial wins in isolated places, and repeated disappointment when demos fail against real repos, components, handoff, or review workflow.
## Why this matters
This is the first proof Mode needs. If this works, Mode feels real. If it does not, every other claim collapses into generic AI-tool noise.
## Aha moment
A designer starts from a real running product surface, fixes one visible UI issue using existing context/component patterns, and produces a reviewable output engineers can inspect.
## What to show
Supported existing repo/product -> live portal/product surface -> select actual UI element -> make one visible UI polish/component-aware change -> show before/after -> show component/context preservation -> show diff/branch/PR or clearly labeled reviewable output with review notes.
## Belief gates
- Real product, not toy: the surface is clearly an existing product, not a generated blank app.
- Stack/context fit: the workflow starts from a supported repo/product path, not a disconnected mockup.
- Useful product action: one visible UI issue gets materially better.
- Component/context trust: the change uses or preserves an existing component/pattern where possible.
- Reviewable handoff: output can be inspected by engineering as a diff/branch/PR/export, with limitations named honestly.
- No overpromise: the proof says exactly what it demonstrates and what it does not claim yet.
## Pass criteria
The viewer can understand the value without being sold: this is a real product change, made in context, with an inspectable output path. No hidden manual cleanup changes the story. If there is no real PR, the artifact is not called a PR.
## Failure modes
Looks like a toy/generated app; too much setup; weak or invisible UI improvement; random component output; no review path; “without engineering” or production-ready-by-default messaging.
## Claim unlocked
Mode lets designers work on real product surfaces, propose useful UI changes, and hand reviewable output to engineering.
## Evidence basis
- Mode W1/W6 active wedge tests
- Mode W2/W4/W5 future wedge proof needs
- ICP trigger: distrust of AI tools for production output
- ICP trigger: design QA/handoff/visual polish friction
- Public AI adoption high but trust in output fragile
## Asset outputs
- 60-90 sec hero demo
- 15-30 sec before/after cutdown
- sample reviewable output/PR artifact
- landing-page proof section
- claim-boundary panel
## Priority note
Make this first. The other proof angles should not distract from this until the hero proof is convincing.