fix(hooks): add 10s timeout and fileExtensions conditions

Bug Fixes

• hooks: Update PostToolUse hooks to read file path from stdin JSON input instead of command-line arguments
• hooks: Add markdown file filter to skip validation on non-.md files

All validation hooks now correctly parse Claude Code's JSON input format. CLI argument fallback preserved for manual testing.

Initial Release

A Claude Code plugin providing Markdown language server support via Marksman.

Features

LSP Operations

• documentSymbol - Navigate all headings with proper nesting
• goToDefinition - Jump from [link](#heading) to the heading
• findReferences - Find all links pointing to a heading
• hover - Preview section content
• workspaceSymbol - Search headings across all markdown files

Validation Hooks

• validate-code-blocks - Ensure code blocks have language identifiers
• validate-links - Check internal anchors and file links exist
• validate-frontmatter - Validate YAML frontmatter structure
• validate-claude-code - Validate LSP operations and slash commands

Requirements

• Marksman LSP server
• Node.js 18+
• Claude Code with ENABLE_LSP_TOOL=1

Installation

git clone https://github.com/zircote/markdown-lsp.git
/plugin install ./markdown-lsp --scope user