feat: convert mdbook to Grav format (199 pages)

Converted from mdbook src/ in input/ to Grav pages/ format:
- Added YAML frontmatter to all pages
- Created numbered folder structure (01.home, 02.Bylaws.*, etc.)
- Preserved all content from Bylaws, Handbook, OperatingAgreements,
  Policies, and JointVenture sections

super ultra big merge completed. scope of work clearly defined. let's go build!

Assisted-by: GLM-5 via Crush <crush@charm.land>

pages/119.Handbook.SourceMaterial.people.team-structure.design/default.md

@@ -0,0 +1,46 @@
+---
+title: 'People'
+menu: 'People'
+---
+
+---
+title: Team Design
+sidebar: Handbook
+showTitle: true
+hideAnchor: true
+---
+
+## People
+
+- [Cory Watilo (Team lead, Lead Designer)](/handbook/company/team/#cory-watilo-lead-designer)
+- [Lottie Coxon, Graphic Design)](/handbook/company/team#lottie-coxon-graphic-designer)
+- Mike Nicklas, Front End Engineer
+
+## Mission
+
+
+
+## Responsibilities
+
+- Support Small Teams (and contributors) in building better versions of PostHog
+- Enable customers to build better products (using PostHog)
+- Communicate to prospective customers the value we provide
+
+Tangibly, we:
+
+- Initiate new projects to support the responsibilities above
+- Support Small Teams in completing their sprint tasks
+- Iterate based on feedback from customers
+
+## Customer
+
+- The other small teams - [here is a guide](handbook/company/working-with-design) on how to best work with the Design team. 
+
+## Output metrics
+
+- Acquisition
+- Retention
+
+## Slack channel
+
+[#team-design](https://posthog.slack.com/messages/team-design)