refactor: restructure as pnpm workspace monorepo

[ericallam]

Summary

Restructure the repo as a proper pnpm workspace monorepo.

• packages/agentcrumbs/ contains the npm package (src, skills, bin, tests)
• docs/ stays at top level as a separate workspace member
• Root package.json is private with scripts that delegate via pnpm -F
• Changesets config ignores private docs package
• CI workflows updated for new paths

Structure

/
  package.json          (workspace root, private)
  pnpm-workspace.yaml   (packages/*, docs)
  .changeset/
  packages/
    agentcrumbs/
      package.json      (publishable npm package)
      src/
      skills/
      bin/
  docs/
    package.json        (private, Next.js + fumadocs)

Test plan

• pnpm build builds the package
• pnpm typecheck passes
• pnpm docs:dev starts docs at localhost:3100
• Changesets workflow finds the package correctly

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Project	Deployment	Actions	Updated (UTC)
agentcrumbs-docs	Ready	Preview, Comment	Mar 10, 2026 10:00am