Adopt MCP 2026-07-28 spec with legacy version negotiation - #772

Minor release: replaces McMaster command-line parsing with
System.CommandLine (#808), adds support for versioned MSBuild project
SDKs (#793), preserves version ranges (#702), MSBuild version variables
(#805) and Directory.Packages.props whitespace (#803) on upgrade, adopts
the MCP 2026-07-28 spec (#772), plus bug fixes and dependency
maintenance since v4.8.1.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Minor release: replaces McMaster command-line parsing with
System.CommandLine (#808), adds support for versioned MSBuild project
SDKs (#793), preserves version ranges (#702), MSBuild version variables
(#805) and Directory.Packages.props whitespace (#803) on upgrade, adopts
the MCP 2026-07-28 spec (#772), plus bug fixes and dependency
maintenance since v4.8.1.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Updated
[dotnet-outdated-tool](https://github.com/dotnet-outdated/dotnet-outdated)
from 4.8.1 to 4.9.0.

<details>
<summary>Release notes</summary>

_Sourced from [dotnet-outdated-tool's
releases](https://github.com/dotnet-outdated/dotnet-outdated/releases)._

## 4.9.0

## What's Changed
* Adopt MCP 2026-07-28 spec with legacy version negotiation by @​slang25
in dotnet-outdated/dotnet-outdated#772
* Fix concurrent cache corruption during recursive file-based app
upgrades by @​DamianEdwards in
dotnet-outdated/dotnet-outdated#788
* Fix: Parameter --maximum-version ignores exact version references by
@​chefarbeiter in
dotnet-outdated/dotnet-outdated#671
* Show a friendly message instead of crashing when a solution has no
projects by @​DanielC000 in
dotnet-outdated/dotnet-outdated#771
* Surface package-upgrade stdout so failures are diagnosable by
@​timabell in
dotnet-outdated/dotnet-outdated#790
* Fix multiline central package version updates by @​onuracar-dev in
dotnet-outdated/dotnet-outdated#783
* Support versioned MSBuild project SDKs in project files by @​thomhurst
in dotnet-outdated/dotnet-outdated#793
* Preserve whitespace in Directory.Packages.props during upgrades by
@​symbiogenesis in
dotnet-outdated/dotnet-outdated#803
* Treat package references injected by custom SDKs as auto-referenced by
@​thomhurst in
dotnet-outdated/dotnet-outdated#795
* Preserve version ranges when upgrading packages by @​GREsau in
dotnet-outdated/dotnet-outdated#702
* Preserve MSBuild version variables across project and props files by
@​symbiogenesis in
dotnet-outdated/dotnet-outdated#805
* Replace McMaster command-line parsing with System.CommandLine by
@​slang25 in dotnet-outdated/dotnet-outdated#808
* Bump version to 4.9.0 by @​slang25 in
dotnet-outdated/dotnet-outdated#806

## New Contributors
* @​chefarbeiter made their first contribution in
dotnet-outdated/dotnet-outdated#671
* @​DanielC000 made their first contribution in
dotnet-outdated/dotnet-outdated#771
* @​timabell made their first contribution in
dotnet-outdated/dotnet-outdated#790
* @​onuracar-dev made their first contribution in
dotnet-outdated/dotnet-outdated#783
* @​thomhurst made their first contribution in
dotnet-outdated/dotnet-outdated#793
* @​GREsau made their first contribution in
dotnet-outdated/dotnet-outdated#702

**Full Changelog**:
dotnet-outdated/dotnet-outdated@v4.8.1...v4.9.0


Commits viewable in [compare
view](dotnet-outdated/dotnet-outdated@v4.8.1...v4.9.0).
</details>

Updated [ptr727.Utilities](https://github.com/ptr727/Utilities) from
4.1.105 to 4.1.109.

<details>
<summary>Release notes</summary>

_Sourced from [ptr727.Utilities's
releases](https://github.com/ptr727/Utilities/releases)._

## 4.1.109

## What's Changed
* Bump the actions-deps group with 4 updates by @​dependabot[bot] in
ptr727/Utilities#574
* Bump the nuget-deps group with 2 updates by @​dependabot[bot] in
ptr727/Utilities#576
* Resync the Instruction Set With the Hub by @​ptr727 in
ptr727/Utilities#581
* Resync the Skills Tree and Markdownlint Config With the Hub by
@​ptr727 in ptr727/Utilities#578
* Bring the Publisher Concurrency and Aggregator Name to the Workflow
Contract by @​ptr727 in ptr727/Utilities#579
* Reconcile the Intent-Fidelity Carried Files With the Hub by @​ptr727
in ptr727/Utilities#580
* Promote the Hub Resync to Main by @​ptr727 in
ptr727/Utilities#582


**Full Changelog**:
ptr727/Utilities@4.1.108...4.1.109

## 4.1.108

## What's Changed
* Bump the actions-deps group with 4 updates by @​dependabot[bot] in
ptr727/Utilities#575
* Bump the nuget-deps group with 2 updates by @​dependabot[bot] in
ptr727/Utilities#577


**Full Changelog**:
ptr727/Utilities@4.1.105...4.1.108

Commits viewable in [compare
view](ptr727/Utilities@4.1.105...4.1.109).
</details>

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
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[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Updated [csharpier](https://github.com/belav/csharpier) from 1.3.0 to
1.4.0.

<details>
<summary>Release notes</summary>

_Sourced from [csharpier's
releases](https://github.com/belav/csharpier/releases)._

## 1.4.0

## Breaking Changes
### Drop support for net8.0 and net9.0
[#​1888](belav/csharpier#1888)
CSharpier and CSharpier.MsBuild now target `net10.0` and `net11.0`.
CSharpier.Core targets `net10.0`, `net11.0` and `netstandard2.0`.

## What's Changed
### Feature: Support for .NET 11 and C# 15
[#​1888](belav/csharpier#1888)
CSharpier now supports the new syntax in C# 15.
```c#
public union Pet(Cat, Dog, Bird);

public closed record GateState;

HashSet<string> set = [with(StringComparer.OrdinalIgnoreCase), "Hello", "HELLO", "hello"];

outer:
for (int row = 0; row < grid.Height; row++)
{
    for (int column = 0; column < grid.Width; column++)
    {
        if (grid[row, column].IsBlocked)
        {
            continue outer;
        }

        if (grid[row, column].IsGoal)
        {
            break outer;
        }
    }
}
```

### Feature: Avoid chopping single trailing lambda
[#​1865](belav/csharpier#1865)
When the last argument is a lambda with a block body, and the arguments
up to and including the `=>` fit on one line, CSharpier now keeps them
on the same line as the method name.
```c#
// input & expected output
logging.AddFile(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "server{0}.log"), o =>
{
    o.MaxRollingFiles = 1;
});

// 1.3.0
logging.AddFile(
    Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "server{0}.log"),
    o =>
    {
        o.MaxRollingFiles = 1;
    }
);
```
 ... (truncated)

## 1.3.11-beta1



## 1.3.6

# 1.3.6
## What's Changed
#### Fix bug where 2nd instance of VSCode was not able to format code
[#​784](belav/csharpier#784)

Thanks to @​BenasB for reporting the issue

Commits viewable in [compare
view](belav/csharpier@1.3.0...1.4.0).
</details>

Updated
[dotnet-outdated-tool](https://github.com/dotnet-outdated/dotnet-outdated)
from 4.8.1 to 4.9.0.

<details>
<summary>Release notes</summary>

_Sourced from [dotnet-outdated-tool's
releases](https://github.com/dotnet-outdated/dotnet-outdated/releases)._

## 4.9.0

## What's Changed
* Adopt MCP 2026-07-28 spec with legacy version negotiation by @​slang25
in dotnet-outdated/dotnet-outdated#772
* Fix concurrent cache corruption during recursive file-based app
upgrades by @​DamianEdwards in
dotnet-outdated/dotnet-outdated#788
* Fix: Parameter --maximum-version ignores exact version references by
@​chefarbeiter in
dotnet-outdated/dotnet-outdated#671
* Show a friendly message instead of crashing when a solution has no
projects by @​DanielC000 in
dotnet-outdated/dotnet-outdated#771
* Surface package-upgrade stdout so failures are diagnosable by
@​timabell in
dotnet-outdated/dotnet-outdated#790
* Fix multiline central package version updates by @​onuracar-dev in
dotnet-outdated/dotnet-outdated#783
* Support versioned MSBuild project SDKs in project files by @​thomhurst
in dotnet-outdated/dotnet-outdated#793
* Preserve whitespace in Directory.Packages.props during upgrades by
@​symbiogenesis in
dotnet-outdated/dotnet-outdated#803
* Treat package references injected by custom SDKs as auto-referenced by
@​thomhurst in
dotnet-outdated/dotnet-outdated#795
* Preserve version ranges when upgrading packages by @​GREsau in
dotnet-outdated/dotnet-outdated#702
* Preserve MSBuild version variables across project and props files by
@​symbiogenesis in
dotnet-outdated/dotnet-outdated#805
* Replace McMaster command-line parsing with System.CommandLine by
@​slang25 in dotnet-outdated/dotnet-outdated#808
* Bump version to 4.9.0 by @​slang25 in
dotnet-outdated/dotnet-outdated#806

## New Contributors
* @​chefarbeiter made their first contribution in
dotnet-outdated/dotnet-outdated#671
* @​DanielC000 made their first contribution in
dotnet-outdated/dotnet-outdated#771
* @​timabell made their first contribution in
dotnet-outdated/dotnet-outdated#790
* @​onuracar-dev made their first contribution in
dotnet-outdated/dotnet-outdated#783
* @​thomhurst made their first contribution in
dotnet-outdated/dotnet-outdated#793
* @​GREsau made their first contribution in
dotnet-outdated/dotnet-outdated#702

**Full Changelog**:
dotnet-outdated/dotnet-outdated@v4.8.1...v4.9.0


Commits viewable in [compare
view](dotnet-outdated/dotnet-outdated@v4.8.1...v4.9.0).
</details>

Updated
[Microsoft.Extensions.Http.Resilience](https://github.com/dotnet/extensions)
from 10.11.0 to 11.0.0.

<details>
<summary>Release notes</summary>

_Sourced from [Microsoft.Extensions.Http.Resilience's
releases](https://github.com/dotnet/extensions/releases)._

## 11.0.0

<!-- DRAFT: not published. Public baseline
f8ee27151b21e33793164b39de5bcebfdced81a4 (includes #​7923). Official
build source/tag target c60d72e7973a90cd4e4300d9153e97b93315e4b7 =
baseline + 9 internal release-prep commits (infrastructure, .NET
8/9/10/11 dependency updates, test pins, feeds, SDK 11.0.100 pin); no
additional PRs. Official build 3132207, BAR 340823, final published
manifest SHA256
A694CB054BBD836E73E2EF9EFA26FAD025EC6F709273D4CF217E08F5E1DE5CE6.
c60d72e is publicly reachable. -->
<!-- AVAILABILITY STATUS (2026-11-10): Public SDK 11.0.100 GA/download
and servicing 8.0.34/9.0.23/10.0.15 are confirmed available. Three
successful dotnet-public reads at 16:50:57Z, 17:05:36Z, and 17:20:30Z
found neither Microsoft.WindowsDesktop.App.Runtime.win-x64 8.0.34 nor
9.0.23 listed. The index samples do not establish restore, official CI,
or dependency closure. -->
<!-- VALIDATION STATUS (NOT PASSED): All 55 published package listings,
provenance/content and signatures were verified, as were 900
library/analyzer consumer graphs. The user's BAR readback confirms build
340823 in .NET 11 channel 8297. Published-source commit
c60d72e7973a90cd4e4300d9153e97b93315e4b7 is publicly reachable. All 272
selected library PDBs on msdl matched the original identities and bytes.
Website follow-up is user-deferred. -->

Version 11.0.0 ships alongside .NET 11 and with net11 targets added to
packages. Highlights of this release include new experimental Documents
and Document Extraction abstractions, metric instrument descriptions,
and a sliding-window retry budget for HTTP resilience.

## Experimental API Changes

### Now Stable
* HTTP server latency telemetry (`AddHttpServerLatencyTelemetry`) APIs
are now stable (previously `EXTEXP0013`) #​7898

### New Experimental APIs
* New experimental API: Documents abstractions in the new
`Microsoft.Extensions.Documents.Abstractions` package (`EXTEXP0019`)
#​7835
* New experimental API: Document Extraction in the new
`Microsoft.Extensions.DocumentExtraction` and
`Microsoft.Extensions.DocumentExtraction.Abstractions` packages
(`MEDE0001`) #​7588
* New experimental API: HTTP resilience retry budget
(`HttpRetryBudgetOptions`,
`HttpRetryResiliencePipelineBuilderExtensions`,
`OnRetryBudgetExhaustedArguments`) (`EXTEXP0001`) #​7867
* New experimental API: `Description` on metric attributes
(`EXTEXP0003`) #​7837

### Obsoleted APIs
* `HybridCacheOptions.DisableCompression` is now obsolete (`EXTOBS0003`)
#​7885

## What's Changed

### Telemetry and Logging

* Add Description to metric attributes and describe all instruments
#​7837 by @​evgenyfedorov2 (co-authored by @​Copilot)
* Capture trace context, thread ID and message template in buffered logs
#​7818 by @​evgenyfedorov2 (co-authored by @​Copilot)
* Allow bool and numeric types for strongly-typed metric tags #​7877 by
@​evgenyfedorov2 (co-authored by @​Copilot)
* Fix route parameter redaction when a parameter value contains a
delimiter used later in the same path segment #​7828 by @​evgenyfedorov2
(co-authored by @​Copilot)
* Fix lost log records when logging reentrantly on the same thread
#​7847 by @​evgenyfedorov2 (co-authored by @​Copilot)
* Fix logging generator stack overflow on type cycles #​7861 by
@​evgenyfedorov2 (co-authored by @​Copilot)
* Honor `[LogPropertyIgnore]` during transitive logging and
`[LogProperties(Transitive = true)]` on properties #​7868 by
@​evgenyfedorov2 (co-authored by @​Copilot)
* Make DataClassificationSet static to decrease allocations #​7874 by
@​evgenyfedorov2 (co-authored by @​Copilot)

### Caching

* Add HybridCache.GetOrCreateAsync overloads for dynamic setting of
options #​7568 by @​svick (co-authored by @​Copilot)
* Mark HybridCacheOptions.DisableCompression as obsolete #​7885 by
@​slang25
* Fix HybridCache stampede state removal race #​7814 by @​svick
(co-authored by @​Copilot)
* Fix HybridCache reservation over-release on DisableUnderlyingData miss
#​7879 by @​Eng3bbas

### AI

* AI: Restore neutral tool approval rejection message #​7913 by @​jozkee
(co-authored by @​Copilot)
* Fix ImageGenerationOptions.Clone dropping StreamingCount #​7829 by
@​Empiree
* Fix evaluation context serialization without reflection fallback
#​7869 by @​valkiara
* Pin MessagePack 2.5.307 in AI template AppHost project #​7853 by
@​evgenyfedorov2 (co-authored by @​Copilot)

### Packaging and Target Frameworks

* Condition framework-provided package references for .NET 11 #​7915 by
@​jeffhandley (co-authored by @​Copilot)
 ... (truncated)

Commits viewable in [compare
view](dotnet/extensions@v10.11.0...v11.0.0).
</details>

Updated [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest)
from 18.11.0 to 18.12.0.

<details>
<summary>Release notes</summary>

_Sourced from [Microsoft.NET.Test.Sdk's
releases](https://github.com/microsoft/vstest/releases)._

No release notes found for this version range.

Commits viewable in [compare
view](https://github.com/microsoft/vstest/commits).
</details>

Updated [System.CommandLine](https://github.com/dotnet/dotnet) from
2.0.14 to 3.0.0.

<details>
<summary>Release notes</summary>

_Sourced from [System.CommandLine's
releases](https://github.com/dotnet/dotnet/releases)._

No release notes found for this version range.

Commits viewable in [compare
view](https://github.com/dotnet/dotnet/commits).
</details>

Updated [xunit.analyzers](https://github.com/xunit/xunit.analyzers) from
2.2.0 to 2.3.0.

<details>
<summary>Release notes</summary>

_Sourced from [xunit.analyzers's
releases](https://github.com/xunit/xunit.analyzers/releases)._

No release notes found for this version range.

Commits viewable in [compare
view](https://github.com/xunit/xunit.analyzers/commits).
</details>

Updated [xunit.v3](https://github.com/xunit/xunit) from 4.0.2 to 4.0.3.

<details>
<summary>Release notes</summary>

_Sourced from [xunit.v3's
releases](https://github.com/xunit/xunit/releases)._

No release notes found for this version range.

Commits viewable in [compare
view](https://github.com/xunit/xunit/commits).
</details>

Dependabot will resolve any conflicts with this PR as long as you don't
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[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

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You can trigger Dependabot actions by commenting on this PR:
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- `@dependabot recreate` will recreate this PR, overwriting any edits
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</details>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pieter Viljoen <ptr727@users.noreply.github.com>
Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>