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A version-pinned playbook for swapping Newtonsoft.Json 13.0.4 for the in-box System.Text.Json on .NET 11: the attribute and settings mappings, the defaults that silently change your wire format, a staged rollout strategy, verification, and the gotchas that bite large codebases.

Dart 3.12 ships dart mcp-server, the official MCP bridge into the Dart and Flutter toolchain. Register it once in Claude Code, Cursor, or Codex CLI and your agent gets hot reload, pub.dev search, and live widget introspection without copy-pasting a DTD URI.

Claude Desktop's claude_desktop_config.json only validates stdio servers. Drop a 'url' field in and it silently strips the entry, crashes on startup, or boots with zero tools. Use a custom connector for remote URLs and mcp-remote as a stdio bridge for local HTTP servers.

A version-pinned migration checklist from .NET 8 LTS to .NET 11 LTS, covering SDK install, csproj target framework, breaking changes in ASP.NET Core, EF Core, System.Text.Json, and the C# 14 overload-resolution shift, with rollback notes.

A version-pinned migration playbook for moving a .NET Framework 4.8 codebase to .NET 11 LTS in 2026, covering the SDK-style csproj rewrite, System.Web to ASP.NET Core, WCF, EF6 to EF Core 11, BinaryFormatter removal, AppDomain replacements, and a realistic rollback plan.

End-to-end migration from Xamarin.Forms 5.0 to .NET MAUI 11 GA on net11.0, covering csproj rewrite, custom renderer to handler conversion, AppShell wiring, DependencyService removal, MessagingCenter retirement, Resizetizer assets, and the gotchas that bite a real production codebase.

Pick Dart 3.12 records for ephemeral, locally-shaped data with no methods, and Freezed 3.x classes for named domain models that need copyWith, sealed unions, JSON serialization, or any behaviour.

For a greenfield mobile app in 2026, pick Flutter 3.44 when pixel-identical UI and animation budget matter, React Native 0.82 when your team already lives in TypeScript and you need a real browser sibling, and .NET MAUI 11 when iOS and Android are part of a wider .NET product and you need first-party Microsoft support.

Step-by-step guide to the Cursor in Jira integration (launched May 19, 2026): install the Marketplace app, assign a ticket to @Cursor, wire repository access and automation rules, and read the PR the cloud agent links back.

MAUI 10 SR6 (10.0.60) extends Material 3 theming to Button, Entry, SearchBar, DatePicker, Slider, ProgressBar, ImageButton, Switch, and Shell on Android. Opt in with one MSBuild property. No custom renderers, no styles.xml edits.