fix: landing usability audit — 16 heuristics (type scale, brand butto…

[Sam-Aitech]

…n, headings, grouping, density)

Description

Closes #

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Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that changes existing behavior)
• Performance improvement
• Refactor (code change with no behavior change)
• Documentation update
• CI/tooling change

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Changes Made

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Testing

Steps to verify:
1.
2.
3.

Test cases covered:

• Happy path
• Error case / invalid input
• Edge case
• Security-critical path (if applicable)

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Security Considerations

• This change does not affect authentication or authorization
• This change does not expose new data to unauthorized users
• This change does not introduce new file upload or user-controlled input paths
• This change does not affect payment or subscription logic

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Checklist

• Code follows project style guidelines (npm run check passes)
• Tests pass locally (npm run test:run)
• No new TypeScript warnings introduced
• Documentation updated (README, DEVELOPMENT.md, API_REFERENCE.md) if applicable
• .env.example updated if new environment variables were added
• shared/schema.ts changes have a corresponding migration file
• No secrets or API keys committed

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Screenshots / Demo

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud