[dibarbet]

Roslyn build: 20261006.2

View Complete Diff of Changes

• Add type suffix options to TypedConstant formatting (PR: #85830)
• Prevent odd document Uris from causing inadvertent syntax errors (PR: #85886)
• Add code actions for documentation diagnostics (PR: #85728)
• Add logging for a hung BuildHost during shutdown (PR: #85908)
• Fix the language-server publish race (PR: #85925)
• Unify Razor diagnostics to a single endpoint (PR: #85867)
• Handle Razor text views without adapters (PR: #85863)
• Add folding ranges for documentation directives (PR: #85725)
• Add semantic-token support for documentation directives (PR: #85724)
• Add documentation formatting, completion and snippets (PR: #85727)
• Ensure we dispose ITextEdits in case we fail to apply them (PR: #85884)
• Mirror ProjectData 265321fe: reader, generator, and build-task projects (PR: #85851)
• Add the documentation directive to the Razor compiler (PR: #85723)
• Cleanup LanguageServerProjectLoadingTests (PR: #85906)
• Reduce IL size for constructing ImmutableArray<T> of small sizes (PR: #85797)
• Make server initialization log assertions thread-safe (PR: #85899)
• Document known issue workarounds inline (PR: #85896)
• Restore automatic HTML test results for local runs (PR: #85892)
• Convert generic brackets to braces when pasting into cref (PR: #85787)
• Report actual errors when strong-name HRESULT assertions fail (PR: #85894)
• Restore main insertions after the VS 18.12 snap (PR: #85824)
• Move extension handler API to Workspaces (PR: #85209)
• Add "edit criteria" for AI doc updates (PR: #85893)
• Improve our Copilot instructions for testing (PR: #85882)

[Copilot]

Copilot review overview

🟢 Approval recommended

The version update is complete and consistent, with only a non-blocking capitalization correction noted.

Review effort: Balanced
Findings: 1

Open (1)

• Use standard capitalization: URIs · New

What changed in this PR

Updates the C# extension’s Roslyn language server packages to 5.13.0-1.26506.2.

Changes:

• Bumps the shared Roslyn package version.
• Adds filtered, user-facing release notes.

File	Description
package.json	Updates the Roslyn package version.
CHANGELOG.md	Documents notable editor and language-server changes.

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[dibarbet]

taking #9851 instead as it has a slightly newer build