chore: added-claude-contexts

[Zaimwa9]

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Changes

Related to #6153

• Added claude contexts for backend as a follow-up from frontend one

How did you test this code?

[vercel]

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3 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
docs	Ignored			Oct 15, 2025 9:53am
flagsmith-frontend-preview	Ignored			Oct 15, 2025 9:53am
flagsmith-frontend-staging	Ignored			Oct 15, 2025 9:53am

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-6155	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-6155	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-6155	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-6155	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-6155	Finished ✅	Results ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@                   Coverage Diff                   @@
##             chore/claude-context    #6155   +/-   ##
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  Coverage                        ?   98.00%           
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  Files                           ?     1278           
  Lines                           ?    44983           
  Branches                        ?        0           
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  Hits                            ?    44084           
  Misses                          ?      899           
  Partials                        ?        0           

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[kyle-ssg]

If we're adding this, the frontend claude context should point to this as the source of truth. This makes me think this should all be 1 PR with a claude.md in api / frontend.

The backend and frontend contexts maybe shouldn't be in the same folder since I imagine it could cause increased token usage. However, I think the FE should point to files like this where applicable.