[Content Migration] Migrate Handbook to Nuxt Content

[ZJvandeWeg]

Epic

4867

Description

Objective

Migrate the /handbook section from 11ty to Nuxt using the Nuxt Content module.

Tasks

• Install and configure @nuxt/content in the Nuxt project.
• Recreate the Handbook layout/wrapper in Vue (pages/handbook/[...slug].vue).
• Move the legacy markdown files from 11ty into Nuxt's content/handbook/ directory.
• Refactor any 11ty specific shortcodes/nunjucks macros in the markdown to Nuxt Content MDC (Markdown Components).
• Remove the proxy routing rule for /handbook/** in nuxt.config.ts.
• Delete the handbook source files from the /legacy folder.

Acceptance Criteria

• The /handbook route is entirely powered by Nuxt and Vue.
• All internal links within the handbook work.
• The 11ty codebase no longer builds the handbook.

Acceptance Criteria

No response

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