Nexus docs update

[prasek]

What does this PR do?

Nexus docs update:

• Rewrite evaluate page with production social proof (Duolingo, Netflix, Miro), outcome-focused benefits, and new light/dark SVG decision trees
• Rewrite Nexus encyclopedia for clarity and concision
• Add new Nexus Patterns page documenting collocated and router-queue deployment patterns
• Expand payload encryption docs with three cross-Namespace approaches: shared key, KMS key ID in metadata, and endpoint-specific wrapper types
• Add "Use the Temporal Client for Signals, Queries, and Updates" section with code examples in all five SDK guides (Go, Java, Python, TypeScript, .NET)
• Add circuit breaker guidance across all SDK guides - handlers should be reliable since it trips after 5 consecutive errors
• Condense all Cloud Nexus pages (index, security, limits, observability, latency, pricing) into scannable bullet lists linking to canonical sources
• Add caution block for changing Endpoint target Namespace with drain recommendation, and document registry access control defaults
• Update Cloud Namespace best practices to recommend Nexus instead of "Workflows should be in the same Namespace"
• Remove deprecated use-cases page, fix broken links, fix typos, standardize sample names, and add Python/TypeScript/.NET to all SDK link lists

┆Attachments: EDU-5974 Nexus docs update

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Project	Deployment	Actions	Updated (UTC)
temporal-documentation	Ready	Preview, Comment	Mar 25, 2026 0:03am

[github-actions]

📖 Docs PR preview links

• Cloud
  • Limits
  • Namespaces
  • Temporal Nexus
    • Latency and Availability
    • Limits
    • Observability
    • Pricing
    • Security
• Develop
  • Dotnet
    • Temporal Nexus
  • Go
    • Temporal Nexus
  • Java
    • Temporal Nexus
  • Plugins guide
  • Python
    • Temporal Nexus
  • Typescript
    • Temporal Nexus
• Evaluate
  • Temporal Nexus
• Glossary
• Production Deployment
  • Self Hosted Guide
    • Temporal Nexus
• Temporal Nexus
  • Nexus Endpoints
  • Nexus Error Handling
  • Nexus Execution Debugging
  • Nexus Metrics
  • Nexus Operations
  • Nexus Patterns
  • Nexus Registry
  • Nexus Security
  • Nexus Services
• Workflow Execution
  • Limits

[KeithB-Temporal]

This is a HUGE leap forward for Nexus documentation! Incredible work, Phil! I went through very thoroughly and added some comments to help support your great work and to make these changes even more awesome.

[bergundy]

I didn't quite get to finish the review but since this has been open for a while now, I figured I would submit what I have so far.

[bergundy]

Are we concerned about broken links here?

[jsundai]

Going to do a deeper review, resolve the build failure, and make some edits on this PR sometime today.

[jsundai]

Taking final deep look at this. Merging this in today.