feat: add @mcp-framework/docs package

[QuantGeekDev]

Summary

• Adds @mcp-framework/docs — a new package in packages/docs/ that lets API providers spin up an MCP documentation server from their Fumadocs site or any site with llms.txt
• AI agents in Claude Code, Cursor, or any MCP client get search_docs, get_page, and list_sections tools to search, browse, and retrieve documentation
• Ships with two source adapters (LlmsTxtSource, FumadocsRemoteSource), in-memory LRU cache, token budget utilities, custom error classes, CLI scaffolder (npx create-docs-server), and a SKILL.md companion template
• 76 tests across 9 suites (unit + integration), all passing

Package structure

packages/docs/
├── src/
│   ├── sources/       # DocSource interface, llms.txt parser, adapters
│   ├── tools/         # SearchDocsTool, GetPageTool, ListSectionsTool
│   ├── cache/         # MemoryCache (LRU + TTL)
│   ├── utils/         # Token estimation & truncation
│   ├── cli/           # create-docs-server scaffolder
│   ├── errors.ts      # Typed error hierarchy
│   ├── server.ts      # DocsServer wrapper
│   └── index.ts       # Public API
├── tests/             # 76 tests (unit + integration)
├── templates/         # Project scaffold templates
└── README.md          # Full documentation

Test plan

• npm run build compiles cleanly (strict TS, Node16 modules)
• 76 tests pass across 9 suites (npm test in packages/docs/)
• Integration tests boot a real HTTP server with fixture data
• npm pack --dry-run produces clean tarball (59 files, 25.5 KB)
• All 4 export subpaths verified (root, /sources, /tools, /cache)
• Verify no regressions in parent mcp-framework tests

🤖 Generated with Claude Code