Sharpen homepage product entry copy

[YSCJRH]

Summary

• Reframe the homepage hero around when AnswerLens fits: public product pages as source material for AI answers.
• Replace the generic shape block with product-fit questions: public story, reviewable evidence, and best-fit teams.
• Keep the adoption path in order: demo report, sample site, one public site, then GitHub Action.

Verification

• corepack pnpm build:site
• corepack pnpm seo:check
• node --experimental-strip-types --experimental-test-isolation=none --test scripts/distribution/build-site.test.ts
• corepack pnpm test
• corepack pnpm typecheck
• corepack pnpm demo:fixture
• corepack pnpm pack:cli:dry-run
• Browser review on local /zh/ and /en/: new hero, product-fit section, and ordered trial copy present; console had no errors or warnings

Notes

• No new scores, reviews, download counts, ranking promises, or consumer AI UI scraping claims.
• Scope is homepage Pages copy plus generated-site assertions.