Summary

• Adds a root brain/ Obsidian-first Markdown vault with guidance, inbox/assets/sources folders, migrated insights, and post seeds.
• Replaces the hard-coded/generated insight registry with build-time Markdown parsing, frontmatter validation, wikilink extraction, and graph edge generation.
• Updates /brain to render published Markdown notes with folder, list, and graph views, including search-aware folder trees and a cleaner clustered graph UI.
• Removes the old generated insight article pipeline and updates blog/brain references to the new source of truth.
• Updates the About page with DemoHunter, polint, gnr8, and the latest “Write Code That Your Coding Agents Love” presentation video.
• Adds the video link to the “Write Code That AI Agents Love” card on the presentations page.
• Fixes two stale About-page external links and excludes freeform brain notes from Prettier enforcement.

Validation

• pnpm exec prettier --check 'app/(pages)/about/page.tsx' app/presentations/page.tsx
• pnpm lint
• pnpm typecheck
• pnpm check-links
• Earlier branch validation: pnpm format:check, pnpm build, pnpm check