Add claude-code topic for GitHub Explore curation

- Add comprehensive topic definition with proper front matter
- Include AI-assisted development focus and MCP innovation
- Provide community-focused description following GitHub style guide
- All URLs verified as active and official
- Strategic related topics for optimal discoverability

Evidence package demonstrates 28.9k+ stars, 4.4M+ weekly downloads,
and extensive ecosystem adoption meeting GitHub's community value criteria.

Author: bdmorin

topics/claude-code/index.md

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+---
+aliases: [claude-cli, anthropic-claude-code, claude-code-cli]
+created_by: Anthropic
+display_name: Claude Code
+github_url: https://github.com/anthropics/claude-code
+related: [ai-coding, anthropic, developer-tools, cli, coding-assistant]
+released: May 22, 2025
+short_description: "Claude Code is Anthropic's command-line interface for AI-assisted software development."
+topic: claude-code
+url: https://www.anthropic.com/claude-code
+wikipedia_url: https://en.wikipedia.org/wiki/Anthropic
+---
+
+Claude Code is Anthropic's command-line interface for AI-assisted software development. It allows developers to collaborate with Claude AI directly from the terminal, providing code generation, debugging assistance, and project management capabilities that integrate seamlessly with existing development workflows.
+
+Built with the Model Context Protocol, Claude Code enables natural language interactions with codebases, intelligent file editing, and automated development tasks. The tool supports multiple programming languages and integrates with popular development environments, making AI assistance accessible to developers regardless of their preferred tools or workflow.