[emir-karabeg]

Summary

Moves the Platform design system out of apps/sim/platform/design-system into workspace packages, on top of the integration center (#9725) and the latest platform-core-chat:

• packages/emcn holds shared controls, tokens, fonts and recipes; packages/emcn-platform holds Platform compositions; packages/emcn-auth and packages/emcn-docs hold the Auth and Docs surfaces. The old package is now @sim/emcn-legacy, so @sim/emcn means the modern package everywhere.
• The zone, embedded/, shared/ and app/o import public family subpaths (@sim/emcn/<family>, @sim/emcn-platform/<family>). Package code uses its private #emcn / #platform aliases.
• check:platform-design, check:platform-css and check:boundaries combine package ownership with the embedded/shared/convergence rules. Their tests and the CI change fixture model the packages.

For the embedded/ owner

These change what the organization views render or import, following the zone:

• Quiet Selects became ChoiceMenu. Quiet MultiSelect / SearchableSelect use variant='text'. Pickers have no quiet variant, and Select has no block.
• ActivityRow uses textMetadata (paired with people). DataTable columns take share for a percentage share; width keeps compact / regular.
• Hydrated moved to app/o/[organizationId]/components/hydrated.tsx: hydration belongs to the host, not a UI package.
• An embedded surface paints its canvas only with canvas, and the host bridge names the EMCN Geist family.

Verification

Run locally on the merge commit 5f2fc54e6b, before the docs-only commit on top:

• Lint: 30/30 tasks. Types: 32/32 workspaces, including every EMCN package. Audits: 68/68. Block registry passes against origin/staging.
• Platform production build passes. The main app production build passes with CI's environment (1,708 pages).
• Platform browser suite: 118/118, fixtures on and off. The Electron renderer check passes.
• Full test suite: 40,122 app tests pass. Three network tests (gateway.server, egress-end-to-end.server, processing-recovery-queue-transport) fail under the local Node 23.10, as they do before this change, and pass under Node 24.19.
• Not run: the live suite (checks/live), which needs a running app and database.

Details and the decisions above are in apps/sim/platform/docs/consolidation-checkpoint.md.

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated
docs	Ready	Preview	Nov 7, 2026 9:30pm UTC

[greptile-apps]

Confidence Score: 4/5

[High impact] The package split reaches UI across the main app, Platform, Auth, Docs, and embedded views.

The PR appears safe to merge with two non-blocking UI regressions to fix.

Findings

1.  Desktop headers stop dragging windows ▶

Summary

Splits the design system into shared EMCN and Auth, Docs and Platform packages, while moving existing controls to @sim/emcn-legacy.

• Shared EMCN controls and data displays live in their own package.
• Platform surfaces load their styles and shared assets from the new packages.
• Embedded views use the new picker and table control options.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  Shared["@sim/emcn: controls, tokens, fonts"]
  Auth["@sim/emcn-auth"]
  Docs["@sim/emcn-docs"]
  Platform["@sim/emcn-platform"]
  Legacy["@sim/emcn-legacy"]
  Shared --> Auth
  Shared --> Docs
  Shared --> Platform
  Auth --> AuthHosts["Auth routes and desktop"]
  Docs --> DocsApp["Docs app"]
  Platform --> Zone["Platform zone"]
  Platform --> Embedded["Organization views"]
  Legacy --> Existing["Unreplaced application routes"]

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_{Reviews (1) · Last reviewed commit: "docs(platform): record the platform-core..." · Reviewed by Greptile}

[greptile-apps]

Comments Outside Diff

These findings could not be posted inline.

•  Embedded surfaces lose host styles packages/emcn-platform/src/components/surface/surface.tsx:25 ▶

  Surface never passes embedded to PlatformSurface, so organization views never receive data-embedded. The new stylesheet requires that marker to preserve keyboard focus outlines and keep surfaces without canvas transparent. Embedded buttons and links therefore lose their focus outline, and previously transparent islands paint a canvas background. Pass embedded from the host-facing Surface wrapper.

      <PlatformSurface theme='system' embedded canvas={canvas} detached={detached}>
  

[cubic-dev-ai]

1 issue found across 2709 files

Confidence score: 4/5

• In api-reference.tsx, the NeutralBadge stretches across the column, so the “Deprecated operation” pill no longer fits its content. Keep the badge aligned to its content width.

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. When an issue isn't valid or won't be fixed in this PR, reply in its thread with the reason and then resolve the thread. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="apps/docs/components/docs/api-reference/api-reference.tsx">

<violation number="1" location="apps/docs/components/docs/api-reference/api-reference.tsx:102">
P3: Switching this container to `flex flex-col` makes the direct child `NeutralBadge` (an `inline-flex` span) stretch to full width, so the "Deprecated operation" pill now spans the whole column. The previous `space-y-8` block layout kept it shrink-wrapped; either revert this className or add `self-start` to the badge.</violation>
</file>

<sub>Note: This PR contains a large number of files. cubic selects up to 200 of the highest-priority eligible files for this review, so some files may not have been reviewed.

Turn on auto-fix | Re-trigger cubic</sub>