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Dev containers, Docker Sandboxes microVMs, Lima VMs, and hosted cloud sandboxes all move Claude Code, Codex, or Copilot CLI off your host.

A monorepo with dozens of pubspec.yaml files makes the Dart analysis server build one analysis context per package, which is where the memory and the minute-long startup go.

HasIndex(...).IsUnique() on a ToJson() member does not enforce uniqueness in EF Core 11 RC 1: SQL Server drops IsUnique and SQLite indexes the whole document.

On iOS, MAUI 10 re-encodes camera photos as PNG whenever CompressionQuality is 90 or higher and no MaximumWidth/Height is set, which includes the default.

The AG-UI protocol now has a standalone .NET SDK: AGUI.Server 1.0.0 streams any IChatClient as AG-UI events over SSE, and AGUIChatClient consumes an AG-UI endpoint as an IChatClient, down to .NET Framework 4.7.2.

OpenAI 2.14.0 renamed GlobalMcpToolCallApprovalPolicy, which broke every tool-carrying Responses call through Microsoft.Extensions.AI.OpenAI 10.10.0.

Error 153 means YouTube got no Referer; 152 means the page claims to be youtube.com.

A dwds bug in Flutter 3.35 web sent a fake pause on every hot reload.

On Windows, Kotlin incremental compilation fails when the Flutter project and the pub cache sit on different drives.

The advisories warning in pub get is harmless: pub get exits 0. pub.dev fixed the bad response on 2026-05-04.

Scoping a token does not stop a prompt-injected agent from leaking it.

Refit 16.1.0 lets an interface method return PagedEnumerable, and the source generator emits the request-per-page loop for cursors, offsets, response headers and next links.

With enable, MVC treats every non-nullable reference type as [Required(AllowEmptyStrings = true)].

A Blazor Web App page with [Authorize] becomes an endpoint the AuthorizationMiddleware checks, and a failed check calls ChallengeAsync, which needs AddAuthentication.

HttpClient reuses a keep-alive connection the server just closed, or the server drops the connection mid-response.

Move a repo, its Cursor cloud agents, automations, Bugbot, and CI from GitHub to Cursor Origin without a flag day: mirror first, rewire agents and CI while GitHub is still the source of truth, then cut over with Detach from GitHub or the reversible inboun…

Starting September 23, 2026, Microsoft packages on NuGet get author-signed with a new certificate (SHA-256 9A1B131B...).

On the .NET 10 SDK every Microsoft.NET.Sdk.Web project gets StaticWebAssetBasePath=/, so a web app referencing another web app collides.

The binder silently skips array properties without a public setter, get-only IReadOnlyList, fields and init-only members under the source generator, and it appends to defaults instead of replacing them.

A DelegatingHandler registered before AddStandardResilienceHandler runs once per logical request, not once per retry.

Claude Code 2.1.277 reads AGENTS.md natively, so Cursor, Claude Code, and most Copilot surfaces can now share one instructions file.

System.Text.Json writes Vector3 as {} and Quaternion as {"IsIdentity":false} because they store data in public fields.

StackExchange.Redis 3.3.0 adds opt-in maintenance notifications (smart client handoffs) for Redis Enterprise, Redis Cloud and Azure Managed Redis: relaxed timeouts during migrations, topology re-reads, and a proactive move before an endpoint goes away.

Call .DisableAntiforgery() on the one endpoint, or on a MapGroup.

Run a Flutter location tracker that survives the Home button, a swipe from recents and a reboot on Android 15 and 16: a location-typed foreground service in its own Flutter engine, the exact permissions, and the SecurityException you get when the while-in…

A side chat branches off what the agent already knows; a subagent goes and finds out something new.

Keep a Flutter WebView on your own domain with webview_flutter 4.14.1: parse the URL, compare Uri.host instead of startsWith, hand mailto: and tel: to url_launcher, and know what Android and iOS actually send to onNavigationRequest.

OpenTelemetry 1.19.0 switched its wildcard source regex to RegexOptions.NonBacktracking, which throws on net8.0 once you register enough sources. 1.19.1, released on September 21, 2026, goes back to a compiled regex with a match timeout.

Map an EF Core key to an Oracle sequence with UseSequence in Oracle.EntityFrameworkCore 10: the DDL and INSERT SQL the provider really emits, how to point at an existing sequence or a legacy trigger, why quoting and HiLo trip people up, and how to move an…

A BeginScope middleware misses the exception handler's error log and the Request finished line.

Move a local stdio MCP server to a remote Streamable HTTP server behind OAuth on MCP spec 2026-07-28 and TypeScript SDK 2.0.0.

Loading an entity, calling List.Add, and saving rewrites the whole jsonb document and silently loses concurrent appends.

Before Aspire 13.5.4, every AppHost health check on an AddKafka resource created a new Confluent producer that nobody disposed, so polling threads piled up and the AppHost burned CPU.

BYOK lets you point GitHub Copilot at a local Ollama model in VS Code, the Copilot CLI, and the Copilot app.

There is no transaction that spans SQL Server and Blob Storage.

The existence check in your handler is not the guard you think it is.

A table named Gas scaffolds to an entity called Ga.

Microsoft Agent Framework .NET 1.22.0 adds AIAgent.AsIChatClient(), closing the round trip with IChatClient.AsAIAgent().

EF Core 11 stops escaping '/', '\', '?'

CVE-2026-92707: nested MessagePack array headers could reuse the same trailing bytes to pass the length check, so deserializing into object allocated thousands of times the payload size.

Rename every PK_, FK_, AK_ and IX_ that EF Core 11 generates with one IModelFinalizingConvention, keep explicit names winning, stay under the identifier length limit, and avoid the clustered-index rebuild the next migration scaffolds on an existing databa…

Four ways to run Cursor Self-Hosted Machines workers for Cloud Agents, compared on isolation, pickup latency, session limits, per-session cost, and where the team service-account key ends up.

Xcode 27 refuses to build anything below macOS 12, and Flutter 3.47 moved its own floor from 10.15 to 12.0.

describeEnum has been deprecated since Flutter 3.16 and its removal PR is approved.

A September 2026 comparison of GitHub Copilot code review, Cursor Bugbot, and anthropics/claude-code-action@v1 running the code-review plugin: what each one reads, what it skips, what it costs per review, and which to put on which repo.

The full path from an AGP 8 Flutter app that applies kotlin-android to AGP 9.1 with android.builtInKotlin=true on Flutter 3.47.

Polly 8.8.0 adds EnableReloadsWithMonitor, so a resilience pipeline can hot-reload from a feature flag or remote config monitor that is not registered in DI.

Use Microsoft.Data.SqlClient.

Use Process.Run when you start a tool and only care how it exited: one call, a timeout that kills the child, and a ProcessExitStatus with the signal.

MSTest 4.4.0 added Span and ReadOnlySpan overloads to Assert.Contains and Assert.DoesNotContain, which made ordinary array and string assertions fail with CS0121 on net8.0, net9.0, or any project below C# 14.