[Bug] Genesis character limit shows 1,000 instead of 10,000

[realproject7]

Problem

Genesis character limit shows 1,000 instead of 10,000. Stories with genesis content over 1,000 chars show "Reduce content to publish" but can actually publish fine (on-chain limit is 10,000).

Root Cause

`app/web/components/PreviewPanel.tsx` line 153:

```typescript
const charLimit = isGenesis ? 1000 : isPlot ? 10000 : null;
```

Genesis is hardcoded to `1000`. Should be `10000`.

Fix

Change to:

```typescript
const charLimit = (isGenesis || isPlot) ? 10000 : null;
```

Files

• `app/web/components/PreviewPanel.tsx` — line 153

Acceptance Criteria

• Genesis character limit displays 10,000
• No false "over limit" warning for genesis under 10,000