feat: add landing page and docs website (#537)

* feat: add landing page and docs website package

Add packages/website — a Vue 3 + Naive UI static site with landing page
and documentation, sharing the Pure Ink monochrome design with the main
app. Features: particle network hero animation, screenshot carousel,
feature grid, install guide tabs, GitHub star history, scroll reveal
animations, and Chinese/English bilingual support.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* chore: add favicon to website package

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix: use dynamic theme param for star history chart

Switch from CSS media query to JS-based dark mode detection so the
star-history SVG matches the current theme toggle state.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix: resolve TypeScript strict mode errors in website components

- Remove unused isDark import in HeroSection
- Add null check for canvas parent element
- Rename unused img loop variable in ScreenshotsSection
- Remove unused NIcon import in SiteHeader

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix: resolve TS narrowing errors in canvas resize closure

Use canvasRef.value directly inside resize() with local null check
instead of relying on outer closure narrowing.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/website/src/views/DocsView.vue

@@ -0,0 +1,41 @@
+<script setup lang="ts">
+import { useRoute } from 'vue-router'
+import DocSidebar from '@/components/docs/DocSidebar.vue'
+import DocContent from '@/components/docs/DocContent.vue'
+
+const route = useRoute()
+</script>
+
+<template>
+  <div class="docs-layout">
+    <DocSidebar v-if="route.meta.page" />
+    <div class="docs-main">
+      <router-view />
+      <DocContent v-if="route.meta.page" />
+      <div v-else class="docs-placeholder">
+        <p>Select a section from the sidebar to get started.</p>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped lang="scss">
+.docs-layout {
+  display: flex;
+  max-width: 1120px;
+  margin: 0 auto;
+  min-height: calc(100vh - 60px - 200px);
+}
+
+.docs-main {
+  flex: 1;
+  min-width: 0;
+}
+
+.docs-placeholder {
+  padding: 60px 32px;
+  color: var(--text-muted);
+  font-size: 16px;
+  text-align: center;
+}
+</style>

packages/website/src/views/LandingView.vue

@@ -0,0 +1,40 @@
+<script setup lang="ts">
+import HeroSection from '@/components/landing/HeroSection.vue'
+import ScreenshotsSection from '@/components/landing/ScreenshotsSection.vue'
+import FeaturesGrid from '@/components/landing/FeaturesGrid.vue'
+import InstallSection from '@/components/landing/InstallSection.vue'
+import StarHistorySection from '@/components/landing/StarHistorySection.vue'
+</script>
+
+<template>
+  <div class="landing">
+    <HeroSection />
+    <ScreenshotsSection />
+    <FeaturesGrid />
+    <div class="cta-row">
+      <InstallSection class="cta-col" />
+      <StarHistorySection class="cta-col" />
+    </div>
+  </div>
+</template>
+
+<style scoped lang="scss">
+.cta-row {
+  max-width: 1120px;
+  margin: 0 auto;
+  padding: 80px 24px;
+  display: flex;
+  gap: 40px;
+
+  @media (max-width: $breakpoint-mobile) {
+    flex-direction: column;
+    padding: 48px 16px;
+    gap: 0;
+  }
+}
+
+.cta-col {
+  flex: 1;
+  min-width: 0;
+}
+</style>