Add new-post script to scaffold draft posts

[riccjohn]

Summary

• Adds pnpm new-post "Post Title" script in scripts/new-post.js
• Slugifies the title to generate the filename
• Pre-fills title, pubDate (today), and stubs description, updatedDate, heroImage as comments
• Uses node: protocol on built-in imports (fixes Biome lint warnings)
• Adds prettier-plugin-organize-imports to sort imports alphabetically on format
• Adds .prettierignore to exclude pnpm-lock.yaml and .claude/

Usage

pnpm new-post "My Great Post"
# → src/content/blog/my-great-post.mdx

Test plan

• Run pnpm new-post "Some Title" and verify the file is created at src/content/blog/some-title.mdx with correct frontmatter and today's date
• Run again with the same title and verify it errors rather than overwriting
• Run without arguments and verify the usage message is shown
• Run pnpm prettier:write and verify imports are sorted alphabetically

🤖 Generated with Claude Code

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