Update ds

Sync local design system files with the latest Figma version. Follow these phases exactly.

Phase 1 — Load local state

Read design-system.md from the project root and extract:

• figma_sources: list of Figma URLs, file keys, and last-synced versions
• last_synced_at: timestamp of last sync

If design-system.md is not found or is missing frontmatter, stop and tell the user:

"No initialized design system found. Run /initialize-ds first."

Phase 2 — Check for updates

For each fileKey in figma_sources:

1. Call get_metadata(fileKey) to retrieve the current Figma file version.
2. Compare with the stored last_synced_version.

If all versions match: report "Design system is already up to date." and stop.

If any version differs: continue to Phase 3.

Phase 3 — Identify changes

For each updated fileKey:

1. Re-fetch get_variable_defs(fileKey) and compare token values against existing tokens.css files.
2. Re-fetch get_design_context for top-level component frames and compare against existing component .md files.
3. Re-fetch get_metadata(fileKey) to detect added or removed pages/frames/components.

Categorize all differences:

• Added: components or tokens present in Figma but not locally
• Modified: components or tokens that exist locally but have changed values or structure
• Removed: components or tokens present locally but no longer in Figma

Present the diff summary to the user before making any changes:

Changes detected in [file name] (v[old] → v[new]):

Added:
  + [ComponentName]
  + --color-new-token

Modified:
  ~ [ComponentName] (variants changed)
  ~ --color-primary (#old → #new)

Removed:
  - [DeprecatedComponent]

Ask the user to confirm before applying changes.

Phase 4 — Update files

Apply only the changes identified in Phase 3.

Token files (tokens.css)

Regenerate fully from Figma variable definitions. These files contain no manual content.

/* Auto-generated from Figma. Do not edit manually. */
/* Source: [FIGMA_URL] | Version: [VERSION] | Synced: [ISO_DATE] */

:root {
  /* [Collection Name] */
  --[token-name]: [value];
}

Component .md files

Preserve content between <!-- custom --> and <!-- /custom --> markers exactly as-is.

For the rest of the file, regenerate from the updated Figma context.

Example of preserved custom section:

## Overview

[Regenerated from Figma]

<!-- custom -->
Our team uses this component exclusively for primary CTAs. Never use the ghost variant in forms.
<!-- /custom -->

## Variants
[Regenerated from Figma]

For removed components: do not delete the file automatically. Instead, add a notice at the top:

> **Deprecated**: This component no longer exists in Figma as of [DATE]. It may still exist in code but should not be used in new work. See [ds-usage.md](../../ds-usage.md) for the deprecated components list.

For added components: create new .md files using the same template as /initialize-ds Phase 4.

design-system.md index

Update the last_synced_version and last_synced_at fields in frontmatter. Add or remove rows in the parts/token tables to reflect structural changes.

Phase 5 — Report

Show a final summary:

Design system updated to version [VERSION].

Files updated: [N]
Files added: [N]
Files deprecated: [N]
Tokens changed: [N]

Ask: "Would you also like to re-run the usage interview to update ds-usage.md?"

If yes, run the Phase 6 interview from /initialize-ds.