Define three user-facing product benefits

[konojunya]

Summary

• Define the primary audience, job, simple Stack heading, tagline, and first-success paths as canonical structured copy.
• Lead with beautiful defaults, cross-workflow consistency, and fast local rendering rather than implementation-language marketing.
• Record evidence links and boundaries for performance, safety, shared-engine versions, and runtime-rendered examples.

Verification

• Structured-copy contract test, full Docs tests, deterministic generation
• No generated or published machine-resource bytes change

The four-locale landing/navigation application follows this canonical source. No competitor superiority or universal latency claims.