Update landing page “About NYCU.LIFE” content to provided Chinese project/team narrative

[Copilot]

This PR replaces the landing page explanation copy with the provided Chinese “關於 NYCU.LIFE 計畫” content, including project motivation, product scope, i18n positioning, and team organization.
It aligns both rendered UI copy and text-based tests with the new narrative.

• Content refresh: project narrative + roadmap

  • Rewrote landing copy in src/lib/content/landing.ts to reflect:
    • student-led origin and campus pain points
    • integration goals (課務、校車/地圖、宿舍報修、場館人潮)
    • future collaboration scenarios (學系博覽會大地遊戲、導覽地圖)
    • bilingual/i18n positioning from project inception

• Team structure mapping in UI sections

  • Updated section and card content to present:
    • 行政組（秘書/公關/法務）
    • 設計組（產品/行銷）
    • 工程組（開發/維運/資安）
  • Renamed nav labels and section headers to match the new information architecture.

• Test expectation updates

  • Updated landing unit/e2e assertions to target new Chinese headings/CTA/section text.
  • Kept test scope limited to copy assertions affected by this content change.

export const hero: HeroContent = {
  badge: '由學生發起的校園數位平台',
  title: '關於 NYCU.LIFE 計畫',
  summary:
    '我們是 NYCU.LIFE，一群由陽明交大的學生發起的團隊。因為在校園生活中，查課表、看校車、確認健身房人潮等資訊常分散在不同系統，我們決定從學生實際需求出發，打造真正好用的數位校園生活平台。',
  primaryCtaLabel: '查看計畫內容'
};

• screenshot
  • 

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• storybook.js.org
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