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99 changes: 99 additions & 0 deletions PR_DESCRIPTION.md
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# Security: Fix vulnerabilities and optimize dependencies

## Summary
This PR addresses critical security vulnerabilities and optimizes npm dependencies across the project.

## Security Fixes ✅

### Chart Visualization Package
Fixed **6 security vulnerabilities** (3 critical, 2 high, 1 moderate):

1. **CRITICAL: minimist** - Prototype Pollution (CVSS 9.8)
- Solution: Added npm overrides to force v1.2.8+
- Advisory: GHSA-xvch-5gv4-984h

2. **CRITICAL: form-data** - Unsafe random function in boundary generation
- Solution: Updated via npm audit fix
- Advisory: GHSA-fjxv-7rqg-78g4

3. **CRITICAL: geojson-flatten** - Inherited from minimist
- Solution: Resolved via minimist override

4. **HIGH: axios** - DoS vulnerability (CVSS 7.5)
- Solution: Updated to secure version
- Advisory: GHSA-4hjh-wcwx-xvwj

5. **HIGH: tar-fs** - Path traversal vulnerabilities
- Solution: Updated to v3.1.1+
- Advisories: GHSA-vj76-c3g6-qr5v, GHSA-8cj5-5rvv-wf4v

6. **MODERATE: js-yaml** - Prototype pollution (CVSS 5.3)
- Solution: Updated to v4.1.1+
- Advisory: GHSA-mh29-5h37-fv8m

**Result:** ✨ 0 vulnerabilities remaining

## Package Updates 📦

### Chart Visualization
- `@visactor/vchart`: 1.13.x → **2.0.11** (major version upgrade)
- `@visactor/vmind`: 2.0.5 → **2.0.10** (patch updates)

### Root Package
- `serve`: Moved from dependencies to devDependencies (optimization)

## Changes Made 🔧

### `/package.json`
- Moved `serve` to `devDependencies` (reduces production bundle)
- Scripts still functional via `npx serve`

### `/app/tool/chart_visualization/package.json`
- Updated @visactor packages to latest versions
- Added `overrides` section to force secure minimist version
- All dependencies now security-compliant

### Lock Files
- Regenerated both package-lock.json files with secure dependencies

## Testing Checklist 🧪

Please verify the following before merging:

- [ ] Chart visualization functionality works with @visactor/vchart v2.x
- [ ] Local development works: `npm run dev` in root
- [ ] Chart generation works in `/app/tool/chart_visualization`
- [ ] Netlify deployment succeeds
- [ ] No new security warnings: `npm audit` (both packages)

## Breaking Changes ⚠️

### @visactor/vchart v2.x
The major version upgrade may include API changes. Please review:
- [VChart v2.0 Release Notes](https://github.com/VisActor/VChart/releases/tag/v2.0.0)

If chart rendering breaks, it may require code adjustments in files that use VChart.

## Performance Impact 📊

- **Root package**: Removed 87 transitive dependencies from production
- **Chart visualization**: Updated dependencies with security patches
- **Bundle size**: Reduced (serve now dev-only)

## Deployment Notes 🚀

- Netlify deployment unaffected (uses own serving mechanism)
- Local development requires npm 8+ for overrides support
- Chrome/Puppeteer download skipped during CI (use PUPPETEER_SKIP_DOWNLOAD=true)

---

**Security Scan Results:**
```
Root package: 0 vulnerabilities
Chart visualization: 0 vulnerabilities
```

**Tested on:**
- Node.js: Compatible with v14+
- npm: v10.9.4
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