# VC 200 — Home Canvas Text Contrast SHIPPED (id 9, 2026-09-21 13:30 Europe/Paris)

**Status**: SHIPPED.
**Phase 0**: VA UP at attempt 1 (gemini, no retry).
**Step 0**: Clean — local `39e781a`, origin/main `39e781a`, 0/0 divergence.

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## 1. Summary

VC 154 shipped the home canvas (welcome + gallery + database + actions zones) but hardcoded white text (`color: '#fff'`, `rgba(255,255,255,*)`) designed for the dark `sample-home` gradient. Real projects have a near-transparent gradient (`rgba(0,0,0,0.0)` → `rgba(0,0,0,0.05)`) and sit on the host's `#fafafa` canvas — so text was invisible. VC 200 adds a light theme that uses the app's existing chrome palette.

## 2. Diagnosis

| Element | Before | Issue |
|---|---|---|
| Home root | `color: '#fff'` | Invisible on `#fafafa` |
| Welcome sub-line | `color: rgba(255,255,255,0.6)` | Invisible on `#fafafa` |
| EmptySection card | `border rgba(255,255,255,0.12) + bg rgba(255,255,255,0.02) + color rgba(255,255,255,0.65)` | Card blends into light bg; text invisible |
| EmptySection label | `color rgba(255,255,255,0.45)` | Invisible |
| Actions zone | Same as EmptySection | Same |
| Action buttons | `rgba(255,255,255,*)` borders/bg/text | Invisible |

## 3. Fix

Branch on `isDark = (project.id === 'sample-home')`. sample-home is the legacy demo with its own dark gradient; every other project sits on `#fafafa` and gets the light palette.

| Element | Dark (sample-home, legacy) | Light (default) |
|---|---|---|
| Root text | `#fff` | `#1a1a1a` |
| Welcome sub-line | `rgba(255,255,255,0.6)` | `#555555` |
| Muted label | `rgba(255,255,255,0.45)` | `#888888` |
| Card border | `1px dashed rgba(255,255,255,0.12)` | `1px dashed #e0e0e0` |
| Card bg | `rgba(255,255,255,0.02)` | `#ffffff` |
| Action btn border | `1px solid rgba(255,255,255,0.2)` | `1px solid #d0d0d0` |
| Action btn bg | `rgba(255,255,255,0.06)` | `#f5f5f5` |
| Action btn text | `rgba(255,255,255,0.85)` | `#555555` |

Files touched (2):
- `src/host/canvas/home-canvas.tsx` — adds `isDark` + `palette` const, threads to JSX, replaces `actionBtnStyle` with `buildActionBtnStyle(isDark)`
- `src/host/canvas/empty-section.tsx` — adds optional `dark?: boolean` prop (default false), threads to JSX

New data-attributes for testability:
- `data-fvos-home-theme="dark"|"light"` on root
- `data-fvos-empty-theme="dark"|"light"` on each card

## 4. Build

`vite build` succeeded — 32.45s, dist size unchanged (~1MB main bundle).

Bundle verification: `dist/assets/home-canvas-*.js` contains BOTH palettes and the runtime branch:
```js
t=dark?{...}:{text:"#1a1a1a",muted:"#888888",body:"#555555",cardBorder:"1px dashed #e0e0e0",cardBg:"#ffffff"}
```

## 5. Smoke (Playwright headless, 1280x720)

Rendered home canvas with project `vibecoder-self` (light theme). DOM probe:
- `[data-fvos-home-theme="light"]` ✓
- root `style.color === "rgb(26, 26, 26)"` = `#1a1a1a` ✓
- `[data-fvos-empty-theme="light"]` on Gallery + Database cards ✓
- card `textColor === "rgb(26, 26, 26)"` ✓

Screenshot `/workspace/.mavis/dispatches/VC-200/screenshot-home-light.png` shows: dark "Welcome to VibeCoder (editor)." header, dark sub-line, white cards with grey borders, dark label + message text, grey action buttons.

Dark-theme branch is verified by bundle inspection (no separate Playwright run — sample-home is a legacy demo path, and the bundle's `dark ? {...} : {...}` ternary guarantees the dark palette renders when `project.id === 'sample-home'`).

## 6. Commits

- `a31b96a` fix(canvas): home-canvas text contrast — light theme on no-gradient projects
- `94fd5eb` Merge feat/id9-vc200-text-contrast into main (VC 200 home canvas contrast fix)

Branch `feat/id9-vc200-text-contrast` pushed to origin, merged --no-ff into main, then deleted locally + pruned.

## 7. Final state

- Local HEAD: `94fd5eb`
- origin/main: `94fd5eb`
- 0/0 divergence ✓
- Worktree `/workspace/.wt-vc200` removed
- Branch `feat/id9-vc200-text-contrast` deleted

## 8. Constraint compliance

| Constraint | Honored? |
|---|---|
| Styling only (no layout or logic changes) | YES — only `color`, `background`, `border` values touched; DOM tree, click handlers, copy unchanged |
| Hard cap 10 native sentences | YES — see native footprint |
| VA down → HARD STOP | N/A (UP at attempt 1) |
| Prefix 9- | YES (`9-` is the reflex namespace; this dispatch's reflex prefix will be 9-#276) |

## 9. New reflex

**9-#276 (VC 200)**: When a component renders both a "demo" (with its own dark gradient) and a "default" (sitting on the app's chrome bg), it MUST branch on a theme flag — not hardcode the demo's palette. Hardcoding demo-only colours is a guaranteed regression the moment the demo is removed or the canvas bg changes.

## 10. Bulletin + doc IDs

- Bulletin **b004534** (success, posted)
- Doc id TBD

## 11. USAGE / NATIVE FOOTPRINT

USAGE: VA 1 call Phase 0 (gemini attempt 1, no retry) | tool-IO ~25 commands (read 2 files, 3 edits, build, Playwright smoke, commit, push, merge, worktree cleanup, bulletin post)
NATIVE FOOTPRINT: 6 prose sentences (implementation dispatch, kept tight per cap 10)

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PROMPT #VC 200 | id 9