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feat: add SEO and LLMO optimizations
- Add sitemap.xml with all LP and docs pages, hreflang alternates - Add llms.txt for LLM crawler optimization (Claude, GPT, Gemini) - Fix robots.txt to reference correct sitemap URL - Add robots meta with max-image-preview:large for Google Images - Enhance JSON-LD: add installUrl, softwareVersion, datePublished, screenshot, WebSite schema, inLanguage - Add ja/layout.tsx with lang="ja" for proper language attribution Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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‎public/llms.txt‎

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# DexCode
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> DexCode is an open-source, AI-first slide authoring and refinement tool for developers. Create, revise, and share presentation decks from the terminal using AI coding agents like Claude Code, Codex CLI, Gemini CLI, or Cursor.
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## Key Facts
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- License: MIT (free and open source)
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- Author: CORe Inc.
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- Repository: https://github.com/co-r-e/dexcode
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- Website: https://co-r-e.github.io/dexcode-lp/
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- Documentation: https://co-r-e.github.io/dexcode-lp/docs/getting-started/introduction
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## What DexCode Does
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DexCode lets developers create slide presentations without leaving the terminal. Slides are written as MDX files (Markdown + React components) and rendered in real-time with hot module replacement. AI agents generate and edit slides, and multiple slides can be revised in parallel by spawning subagents.
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## Core Features
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- AI-first workflow: prompt your coding agent to generate entire decks
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- Per-slide parallel editing: spawn one agent per slide for concurrent revisions
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- 30+ built-in MDX components: charts, layouts, timelines, cards, icons, shapes
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- 12 slide types: cover, section, content, comparison, stats, timeline, image-left, image-right, image-full, quote, agenda, ending
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- 20+ showcase templates for common presentation patterns
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- Live reload via Next.js HMR
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- PDF and PPTX export from the browser
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- Cloudflare Tunnel sharing for real-time collaboration
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- 14 built-in Claude Code agent skills (deck design, image generation, SVG diagrams, video export, localization, QA audits)
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## Tech Stack
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- Next.js 16 (App Router)
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- React 19
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- MDX for slide content
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- Recharts for data visualization
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- Tailwind CSS for styling
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- jsPDF + pptxgenjs for export
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- Cloudflare Tunnel for sharing
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- Gemini API for image generation
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## Documentation
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- [Getting Started](https://co-r-e.github.io/dexcode-lp/docs/getting-started/introduction)
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- [Installation](https://co-r-e.github.io/dexcode-lp/docs/getting-started/installation)
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- [Quick Start](https://co-r-e.github.io/dexcode-lp/docs/getting-started/quick-start)
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- [Creating Decks](https://co-r-e.github.io/dexcode-lp/docs/guides/creating-decks)
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- [Parallel Editing](https://co-r-e.github.io/dexcode-lp/docs/guides/parallel-editing)
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- [Agent Skills](https://co-r-e.github.io/dexcode-lp/docs/guides/agent-skills)
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- [Sharing & Presenting](https://co-r-e.github.io/dexcode-lp/docs/guides/sharing)
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- [Theme Customization](https://co-r-e.github.io/dexcode-lp/docs/guides/theme-customization)
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- [Components](https://co-r-e.github.io/dexcode-lp/docs/components/overview)
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- [Configuration](https://co-r-e.github.io/dexcode-lp/docs/reference/configuration)
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- [CLI Commands](https://co-r-e.github.io/dexcode-lp/docs/reference/cli-commands)
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- [Export Options](https://co-r-e.github.io/dexcode-lp/docs/reference/export)
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- [Keyboard Shortcuts](https://co-r-e.github.io/dexcode-lp/docs/reference/keyboard-shortcuts)

‎public/robots.txt‎

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User-agent: *
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Allow: /
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Sitemap: https://co-r-e.github.io/dexcode-docs/sitemap.xml
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Sitemap: https://co-r-e.github.io/dexcode-lp/sitemap.xml

‎public/sitemap.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
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xmlns:xhtml="http://www.w3.org/1999/xhtml">
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/</loc>
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<xhtml:link rel="alternate" hreflang="en" href="https://co-r-e.github.io/dexcode-lp/" />
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<xhtml:link rel="alternate" hreflang="ja" href="https://co-r-e.github.io/dexcode-lp/ja" />
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<xhtml:link rel="alternate" hreflang="x-default" href="https://co-r-e.github.io/dexcode-lp/" />
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<changefreq>weekly</changefreq>
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<priority>1.0</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/ja</loc>
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<xhtml:link rel="alternate" hreflang="en" href="https://co-r-e.github.io/dexcode-lp/" />
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<xhtml:link rel="alternate" hreflang="ja" href="https://co-r-e.github.io/dexcode-lp/ja" />
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<xhtml:link rel="alternate" hreflang="x-default" href="https://co-r-e.github.io/dexcode-lp/" />
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<changefreq>weekly</changefreq>
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<priority>0.9</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/getting-started/introduction</loc>
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<changefreq>monthly</changefreq>
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<priority>0.8</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/getting-started/installation</loc>
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<changefreq>monthly</changefreq>
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<priority>0.8</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/getting-started/quick-start</loc>
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<changefreq>monthly</changefreq>
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<priority>0.8</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/guides/creating-decks</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/guides/parallel-editing</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/guides/agent-skills</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/guides/sharing</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/guides/theme-customization</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/components/overview</loc>
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<changefreq>monthly</changefreq>
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<priority>0.7</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/components/charts</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/components/layouts</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/components/code-blocks</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/reference/cli-commands</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/reference/configuration</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/reference/keyboard-shortcuts</loc>
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<changefreq>monthly</changefreq>
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<priority>0.5</priority>
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</url>
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<url>
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<loc>https://co-r-e.github.io/dexcode-lp/docs/reference/export</loc>
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<changefreq>monthly</changefreq>
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<priority>0.6</priority>
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</url>
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</urlset>

‎src/app/ja/layout.tsx‎

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import type { ReactNode } from "react";
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export default function JaLayout({ children }: { children: ReactNode }): ReactNode {
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return <div lang="ja">{children}</div>;
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}

‎src/app/ja/page.tsx‎

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"@context": "https://schema.org",
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"@type": "SoftwareApplication",
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name: "DexCode",
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description: dict.meta.description,
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url: `${SITE_URL}/ja`,
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applicationCategory: "DeveloperApplication",
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operatingSystem: "macOS, Linux, Windows (WSL)",
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description: dict.meta.description,
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url: `${SITE_URL}/ja/`,
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offers: { "@type": "Offer", price: "0", priceCurrency: "JPY" },
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license: "https://opensource.org/licenses/MIT",
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codeRepository: "https://github.com/co-r-e/dexcode",
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installUrl: "https://github.com/co-r-e/dexcode",
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softwareVersion: "0.1.3",
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datePublished: "2025-01-01",
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inLanguage: ["en", "ja"],
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author: {
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"@type": "Organization",
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name: "CORe Inc.",
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url: "https://co-r-e.com",
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},
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license: "https://opensource.org/licenses/MIT",
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codeRepository: "https://github.com/co-r-e/dexcode",
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offers: { "@type": "Offer", price: "0", priceCurrency: "JPY" },
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screenshot: `${SITE_URL}/assets/og-image.png`,
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}),
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}}
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/>

‎src/app/layout.tsx‎

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icons: {
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icon: "/assets/favicon.svg",
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},
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robots: {
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index: true,
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follow: true,
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googleBot: {
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index: true,
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follow: true,
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"max-image-preview": "large",
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"max-snippet": -1,
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},
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},
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};
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interface RootLayoutProps {

‎src/app/page.tsx‎

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<script
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type="application/ld+json"
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dangerouslySetInnerHTML={{
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__html: JSON.stringify({
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"@context": "https://schema.org",
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"@type": "SoftwareApplication",
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name: "DexCode",
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description: dict.meta.description,
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url: `${SITE_URL}/`,
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applicationCategory: "DeveloperApplication",
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operatingSystem: "Cross-platform",
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offers: { "@type": "Offer", price: "0", priceCurrency: "USD" },
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license: "https://opensource.org/licenses/MIT",
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codeRepository: "https://github.com/co-r-e/dexcode",
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author: { "@type": "Organization", name: "CORe Inc." },
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}),
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__html: JSON.stringify([
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{
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"@context": "https://schema.org",
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"@type": "SoftwareApplication",
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name: "DexCode",
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description: dict.meta.description,
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url: `${SITE_URL}/`,
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applicationCategory: "DeveloperApplication",
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operatingSystem: "macOS, Linux, Windows (WSL)",
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offers: { "@type": "Offer", price: "0", priceCurrency: "USD" },
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license: "https://opensource.org/licenses/MIT",
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codeRepository: "https://github.com/co-r-e/dexcode",
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installUrl: "https://github.com/co-r-e/dexcode",
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downloadUrl: "https://github.com/co-r-e/dexcode",
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softwareVersion: "0.1.3",
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datePublished: "2025-01-01",
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inLanguage: ["en", "ja"],
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author: {
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"@type": "Organization",
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name: "CORe Inc.",
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url: "https://co-r-e.com",
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},
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screenshot: `${SITE_URL}/assets/og-image.png`,
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},
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{
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"@context": "https://schema.org",
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"@type": "WebSite",
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name: "DexCode",
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url: `${SITE_URL}/`,
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inLanguage: ["en", "ja"],
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potentialAction: {
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"@type": "SearchAction",
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target: `${SITE_URL}/docs/getting-started/introduction`,
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},
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},
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]),
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}}
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/>
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<LpPage locale="en" dict={dict} />

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