docs: Replace atomic mutations with ACID integrity concept

[ntucker]

Summary

• Replace the Atomic Mutations concept page with an ACID page covering atomicity, consistency, isolation, and durability for async frontend data
• Add interactive playgrounds for update/create/delete, rollback, identity, collections, query, validation, transports, fetch-order, snapshots, and REST durability
• Redirect /docs/concepts/atomic-mutations to /docs/concepts/acid and update GOALS, Entity, mutations, and homepage demo links

Test plan

• Visit /docs/concepts/acid and confirm playgrounds render and run
• Confirm /docs/concepts/atomic-mutations redirects to the new page
• Check the Concepts sidebar shows ACID
• Follow the homepage demo “atomically and immediately” link to the ACID page

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Project	Deployment	Actions	Updated (UTC)
docs-site	Ready	Preview	Aug 13, 2026 4:24pm

[github-actions]

Size Change: 0 B

Total Size: 81 kB

ℹ️ View Unchanged

Filename	Size
examples/test-bundlesize/dist/App.js	1.46 kB
examples/test-bundlesize/dist/polyfill.js	307 B
examples/test-bundlesize/dist/rdcClient.js	10.9 kB
examples/test-bundlesize/dist/rdcEndpoint.js	8.07 kB
examples/test-bundlesize/dist/react.js	59.6 kB
examples/test-bundlesize/dist/webpack-runtime.js	784 B

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.84%. Comparing base (ef4653f) to head (85455d5).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4070   +/-   ##
=======================================
  Coverage   97.84%   97.84%           
=======================================
  Files         156      156           
  Lines        3057     3057           
  Branches      612      612           
=======================================
  Hits         2991     2991           
  Misses         18       18           
  Partials       48       48           

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[cursor]

Cursor Bugbot has reviewed your changes and found 2 potential issues.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit 7ab1e09. Configure here.}

[cursor]

Rejection UI uses loading fallback

Medium Severity

AsyncBoundary's fallback only covers Suspense, not failed validation. Invalid articles throw into the default error UI, so Rejected — not committed and Still in store never appear on a real rejection, and the loading state is labeled as a rejection instead.

 

^{Reviewed by Cursor Bugbot for commit 7ab1e09. Configure here.}

[cursor]

Raw article pane suspends entire demo

Medium Severity

RawArticlePage calls useSuspense with no local AsyncBoundary. Switching payloads suspends the whole playground, so the navigator and Data Client pane unmount into the preview loader instead of updating side by side.

 

^{Reviewed by Cursor Bugbot for commit 7ab1e09. Configure here.}