Add F# support to migrate-dotnet* skills

[Copilot]

• Update migrate-dotnet8-to-dotnet9/SKILL.md — add .fsproj references, make C# compiler refs conditional, add F# compiler refs
• Update migrate-dotnet9-to-dotnet10/SKILL.md — add .fsproj references, make C# compiler refs conditional, add F# compiler refs
• Update migrate-dotnet10-to-dotnet11/SKILL.md — add .fsproj references, make C# compiler refs conditional, add F# compiler refs
• Create references/fsharp-compiler-dotnet8to9.md — F# 9 compiler breaking changes
• Create references/fsharp-compiler-dotnet9to10.md — F# 10 compiler breaking changes
• Create references/fsharp-compiler-dotnet10to11.md — F# 11 compiler breaking changes
• Fix CI: add github.com/dotnet/fsharp to known-domains.txt (reference scanner)
• Fix CI: shorten migrate-dotnet9-to-dotnet10 description from 1,097 to 990 chars (max 1,024)
• Address @danmoseley review: simplify compiler bullet in migrate-dotnet10-to-dotnet11
• Address @danmoseley review: remove duplicate Step 3 reference-loading table in migrate-dotnet8-to-dotnet9
• Address @danmoseley review: remove duplicate Step 3 reference-loading table in migrate-dotnet9-to-dotnet10
• Address @danmoseley review: remove duplicate Step 3 reference-loading table in migrate-dotnet10-to-dotnet11
• Resolve merge conflicts: known-domains.txt moved from eng/reference-scanner/ to eng/

Original prompt

---

This section details on the original issue you should resolve

<issue_title>dotnet-upgrade/.../migrate-dotnet* skills are missing F# vs. C#</issue_title>
<issue_description>The migrate-dotnet* skills are missing F# differentiation. The skills are written C# focused rather than being generic .NET skills.

Examples:

-| Project or solution path | Yes | The `.csproj`, `.sln`, or `.slnx` entry point to migrate |
+| Project or solution path | Yes | The `.csproj`, `.fsproj`, `.sln`, or `.slnx` entry point to migrate |

-1. In each `.csproj` (or `Directory.Build.props` if centralized), change:
+1. In each `.csproj`/`.fsproj` (or `Directory.Build.props` if centralized), change:

-| `references/csharp-compiler-dotnet9to10.md` | Always (C# 14 compiler breaking changes) |
+| `references/csharp-compiler-dotnet9to10.md` | Project uses C# (C# 14 compiler breaking changes) |
+| `references/fsharp-compiler-dotnet9to10.md` | Project uses F# (F# 10 compiler breaking changes) |

A few minor tweaks like this and the skills will be useful in both C#, F#, and mixed solutions.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes dotnet-upgrade/.../migrate-dotnet* skills are missing F# vs. C# #403

---

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I tried to connect to the following addresses, but was blocked by firewall rules:

• fsharp.github.io
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• learn.microsoft.com
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[Copilot]

Pull request overview

This PR updates the migrate-dotnet* upgrade skills under plugins/dotnet-upgrade to better support F# (and mixed C#/F# solutions) by broadening project file inputs and adding F# compiler breaking-change references alongside the existing C# ones.

Changes:

• Expanded skill instructions/inputs from .csproj-only to .csproj/.fsproj across the migration workflows.
• Made compiler reference loading language-conditional (C# vs F#) and added new F# compiler reference documents for affected migrations.
• Updated skill frontmatter descriptions to include corresponding F# language versions.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
plugins/dotnet-upgrade/skills/migrate-dotnet9-to-dotnet10/SKILL.md	Adds .fsproj support and introduces F# compiler reference loading alongside C#
plugins/dotnet-upgrade/skills/migrate-dotnet9-to-dotnet10/references/fsharp-compiler-dotnet9to10.md	New reference doc capturing F# 10 breaking changes for .NET 10
plugins/dotnet-upgrade/skills/migrate-dotnet8-to-dotnet9/SKILL.md	Adds .fsproj support and introduces F# compiler reference loading alongside C#
plugins/dotnet-upgrade/skills/migrate-dotnet8-to-dotnet9/references/fsharp-compiler-dotnet8to9.md	New reference doc capturing F# 9 breaking changes for .NET 9
plugins/dotnet-upgrade/skills/migrate-dotnet10-to-dotnet11/SKILL.md	Adds .fsproj support and introduces F# compiler reference loading alongside C#
plugins/dotnet-upgrade/skills/migrate-dotnet10-to-dotnet11/references/fsharp-compiler-dotnet10to11.md	New reference doc capturing F# 11 breaking changes for .NET 11

---

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[ViktorHofer]

@copilot address the CI failures (scan external references and skill-check)

[Copilot]

@copilot address the CI failures (scan external references and skill-check)

Fixed both in 4138ea3:

1. Reference Validation: Added github.com/dotnet/fsharp to eng/reference-scanner/known-domains.txt (the URL https://github.com/dotnet/fsharp/pull/19143 in fsharp-compiler-dotnet10to11.md referenced a repo not in the allowlist).
2. skill-check: Shortened the migrate-dotnet9-to-dotnet10 description from 1,097 → 990 chars (max 1,024) by trimming verbose phrasing while keeping all F# mentions.

[ViktorHofer]

/evaluate

[github-actions]

Skill Validation Results

Skill	Scenario	Quality (Isolated)	Quality (Plugin)	Skills Loaded	Overfit	Verdict
migrate-dotnet9-to-dotnet10	Console app with System.Linq.Async, SIGTERM, and BufferedStream	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	✅
migrate-dotnet9-to-dotnet10	Expression tree code broken by C# 14 span overload resolution	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, grep, view, bash / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, bash, view	—	❌ [1]
migrate-dotnet9-to-dotnet10	ASP.NET Core app with WebHostBuilder, OpenAPI, and forwarded headers	3.7/5 → 4.7/5 🟢	3.7/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, view	—	✅
migrate-dotnet9-to-dotnet10	ASP.NET Core app with OpenAPI transformers using Microsoft.OpenApi v1 APIs	3.0/5 → 5.0/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, bash, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, view, bash	—	✅
migrate-dotnet9-to-dotnet10	EF Core app with Azure SQL JSON columns and parameterized collections	4.7/5 → 4.7/5	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [2]
migrate-dotnet9-to-dotnet10	EF Core app with dynamic ExecuteUpdate and complex types	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [3]
migrate-dotnet9-to-dotnet10	SQLite app with DateTimeOffset timezone handling	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, bash, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view, grep	—	❌ [4]
migrate-dotnet9-to-dotnet10	Worker service with config null array binding and ProviderAlias assembly change	4.7/5 → 5.0/5 🟢	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill / ✅ migrate-dotnet9-to-dotnet10; tools: skill	—	✅
migrate-dotnet9-to-dotnet10	Cryptography app with OpenSSL, X.509, and Rfc2898DeriveBytes	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [5]
migrate-dotnet9-to-dotnet10	SDK and NuGet obscure tooling changes	4.3/5 → 4.7/5 🟢	4.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill / ✅ migrate-dotnet9-to-dotnet10; tools: skill	—	❌ [6]
migrate-dotnet9-to-dotnet10	JSON polymorphism with conflicting property names and XmlSerializer	4.3/5 → 5.0/5 🟢	4.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, view, report_intent / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view, report_intent	—	❌ [7]
migrate-dotnet9-to-dotnet10	WinForms and WPF desktop app with System.Drawing and DynamicResource	4.3/5 → 5.0/5 🟢	4.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill / ✅ migrate-dotnet9-to-dotnet10; tools: skill	—	✅
migrate-dotnet9-to-dotnet10	Containerized single-file app with P/Invoke and IDispatchEx	3.7/5 → 5.0/5 🟢	3.7/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	App using SslStream properties and SystemEvents	5.0/5 → 5.0/5	5.0/5 → 4.0/5 🔴	✅ migrate-dotnet9-to-dotnet10; tools: skill, view, bash / ✅ migrate-dotnet9-to-dotnet10; tools: skill	—	❌
migrate-dotnet9-to-dotnet10	Library with NuGet auditing, transitive deps, and InlineArray	4.3/5 → 5.0/5 🟢	4.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view, task / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	❌ [8]
migrate-dotnet9-to-dotnet10	C# 14 compiler breaking changes — field keyword, extension keyword, disposal	4.0/5 → 5.0/5 🟢	4.0/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	Blazor WASM app with generic math shift masking and tar operations	4.3/5 → 4.3/5	4.3/5 → 3.7/5 🔴	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	❌
migrate-dotnet8-to-dotnet9	App with empty environment variables, ZIP encoding, and keyed DI services	2.3/5 → 4.0/5 🟢	2.3/5 → 4.3/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash, grep / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	C# 13 compiler breaking changes — InlineArray on record, iterator safe context, collection expressions	3.0/5 → 5.0/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, view, report_intent / ✅ migrate-dotnet8-to-dotnet9; tools: skill, view, report_intent	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	ASP.NET Core app with DI validation, forwarded headers, and HttpClientFactory casting	1.7/5 ⏰ → 5.0/5 🟢	1.7/5 ⏰ → 4.7/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill, create	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	EF Core app with migration patterns and Cosmos DB discriminator	3.3/5 → 5.0/5 🟢	3.3/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	EF Core Cosmos DB app with existing documents and composite id format	4.3/5 → 4.3/5	4.3/5 → 4.7/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	App with JsonDocument null deserialization and BinaryFormatter fallback	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	❌ [9]
migrate-dotnet8-to-dotnet9	CI pipeline with Terminal Logger parsing and version constraints	2.3/5 → 2.3/5	2.3/5 → 5.0/5 🟢	ℹ️ not activated (expected) / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	WinForms app with custom UserControls and PictureBox URL loading	3.3/5 → 5.0/5 🟢	3.3/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	❌ [10]
migrate-dotnet8-to-dotnet9	Containerized app with zlib dependency and runtime configuration	4.7/5 → 5.0/5 🟢	4.7/5 → 4.7/5	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	EF Core Cosmos DB app with discriminator and sync I/O	3.7/5 → 5.0/5 🟢	3.7/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	✅ 0.08	✅
migrate-dotnet8-to-dotnet9	Library with String.Trim span overload, keyed services, and InlineArray	5.0/5 → 5.0/5	5.0/5 → 5.0/5	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	✅ 0.08	❌ [11]
migrate-dotnet8-to-dotnet9	Containerized app with env var precedence reversal and zlib removal	4.7/5 → 5.0/5 🟢	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	✅ 0.08	✅
migrate-dotnet10-to-dotnet11	Console app with compression and TAR operations	3.0/5 ⏰ → 4.3/5 🟢	3.0/5 ⏰ → 4.7/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill / ✅ migrate-dotnet10-to-dotnet11; tools: skill	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	C# 15 compiler breaking changes — Span safe-context, nameof, with()	3.0/5 → 5.0/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill, view, report_intent / ✅ migrate-dotnet10-to-dotnet11; tools: skill, view, report_intent	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	EF Core app with Cosmos DB provider using sync APIs	4.0/5 → 5.0/5 🟢	4.0/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view / ✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	Deployment to older hardware with minimum requirement changes	2.7/5 → 5.0/5 🟢	2.7/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	Cryptography app using DSA on macOS	3.0/5 → 4.7/5 🟢	3.0/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	Basic TFM update with Docker and global.json	3.0/5 → 4.0/5 🟢	3.0/5 → 4.3/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill / ✅ migrate-dotnet10-to-dotnet11; tools: skill	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	C# 15 dynamic operator and ref readonly delegate issues	2.3/5 → 4.7/5 🟢	2.3/5 → 4.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view, task, grep, bash, stop_bash / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	✅

[1] (Isolated) Quality unchanged but weighted score is -5.9% due to: tokens (16217 → 100658), tool calls (0 → 6)
[2] (Plugin) Quality improved but weighted score is -0.6% due to: tokens (29055 → 56245), tool calls (2 → 4), time (22.8s → 29.5s)
[3] (Plugin) Quality unchanged but weighted score is -6.7% due to: tokens (30456 → 57066), tool calls (2 → 3), quality
[4] (Plugin) Quality unchanged but weighted score is -2.6% due to: tokens (49730 → 84778), time (20.3s → 26.1s), tool calls (4 → 5)
[5] (Isolated) Quality unchanged but weighted score is -17.2% due to: judgment, quality
[6] (Isolated) Quality improved but weighted score is -19.1% due to: quality, judgment
[7] (Isolated) Quality improved but weighted score is -16.5% due to: judgment, quality, tokens (38035 → 52036)
[8] (Isolated) Quality improved but weighted score is -32.1% due to: quality, judgment, tokens (29928 → 61876), tool calls (4 → 7)
[9] (Plugin) Quality unchanged but weighted score is -3.4% due to: tokens (185023 → 327037), tool calls (20 → 26)
[10] (Isolated) Quality improved but weighted score is -13.0% due to: judgment, quality
[11] (Plugin) Quality unchanged but weighted score is -5.1% due to: tokens (105640 → 210734), tool calls (17 → 22), time (80.0s → 98.2s)

⏰ timeout — run hit the scenario timeout limit; scoring may be impacted by aborting model execution before it could produce its full output

Model: claude-opus-4.6 | Judge: claude-opus-4.6

Full results

[ViktorHofer]

@danmoseley I think you are the second best person to review after @T-Gro who already approved :)

[danmoseley]

Suggested change

	- Fixing C# 15 compiler breaking changes after SDK upgrade (see the C#-specific “Common patterns” list in Step 3)
	- Fixing F# 11 compiler breaking changes after SDK upgrade (see the F# 11 “What’s new” documentation at https://learn.microsoft.com/dotnet/fsharp/whats-new/fsharp-11)
	- Fixing C# 15 and F# 11 compiler breaking changes after SDK upgrade.

I pulled out all docs links because they added tokens for no benefit. It can find docs. And the extra text here is surely not necessary

[Copilot]

Applied in e95247e — combined both bullets into a single line and removed the docs link.

[ViktorHofer]

I pulled out all docs links because they added tokens for no benefit. It can find docs. And the extra text here is surely not necessary

Are you sure on that? I assume that without the link, the LLM will not always initiate a web_fetch call. In other words, doesn't the omission of the links make the process less deterministic?

[danmoseley]

this duplicates the "when to load" at the end. I don't remember doing that-- maybe I forgot? But seems one should be deleted.

[Copilot]

Removed the duplicate Step 3 table in e95247e. The Reference Documents section at the bottom is now the single source of truth. Step 3 just says to load from that table. Applied to all three skills.

[danmoseley]

same comment about duplicating when to load table below

[Copilot]

Fixed in e95247e — same approach as dotnet8-to-dotnet9.

[danmoseley]

@copilot address feedback

[ViktorHofer]

@copilot resolve the merge conflicts (the known-domains.txt got moved under /eng)

[Copilot]

@copilot resolve the merge conflicts (the known-domains.txt got moved under /eng)

Resolved in aba457b — merged main which moved known-domains.txt from eng/reference-scanner/ to eng/. The github.com/dotnet/fsharp entry is preserved in the new location.

[danmoseley]

/evaluate

[github-actions]

Skill Validation Results

Skill	Scenario	Quality	Skills Loaded	Overfit	Verdict
migrate-dotnet8-to-dotnet9	App with empty environment variables, ZIP encoding, and keyed DI services	2.0/5 → 3.0/5 🟢	ℹ️ not activated (expected) / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	—	✅
migrate-dotnet8-to-dotnet9	C# 13 compiler breaking changes — InlineArray on record, iterator safe context, collection expressions	3.0/5 → 3.0/5	ℹ️ not activated (expected) / ✅ migrate-dotnet8-to-dotnet9; tools: report_intent, skill, view	—	❌ [1]
migrate-dotnet8-to-dotnet9	ASP.NET Core app with DI validation, forwarded headers, and HttpClientFactory casting	2.0/5 → 4.7/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	—	✅
migrate-dotnet8-to-dotnet9	EF Core app with migration patterns and Cosmos DB discriminator	3.3/5 → 4.7/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	—	✅
migrate-dotnet8-to-dotnet9	EF Core Cosmos DB app with existing documents and composite id format	4.0/5 → 4.7/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, read_bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill	—	❌ [2]
migrate-dotnet8-to-dotnet9	App with JsonDocument null deserialization and BinaryFormatter fallback	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill / ✅ migrate-dotnet8-to-dotnet9; tools: skill	—	❌ [3]
migrate-dotnet8-to-dotnet9	CI pipeline with Terminal Logger parsing and version constraints	2.3/5 → 2.3/5	ℹ️ not activated (expected) / ✅ migrate-dotnet8-to-dotnet9; tools: skill	—	❌ [4]
migrate-dotnet8-to-dotnet9	WinForms app with custom UserControls and PictureBox URL loading	3.3/5 → 4.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	—	❌ [5]
migrate-dotnet8-to-dotnet9	Containerized app with zlib dependency and runtime configuration	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill	—	❌ [6]
migrate-dotnet8-to-dotnet9	EF Core Cosmos DB app with discriminator and sync I/O	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	—	❌ [7]
migrate-dotnet8-to-dotnet9	Library with String.Trim span overload, keyed services, and InlineArray	5.0/5 → 4.7/5 🔴	✅ migrate-dotnet8-to-dotnet9; tools: skill, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, bash	—	❌ [8]
migrate-dotnet8-to-dotnet9	Containerized app with env var precedence reversal and zlib removal	4.7/5 → 4.3/5 🔴	✅ migrate-dotnet8-to-dotnet9; tools: skill, edit, bash / ✅ migrate-dotnet8-to-dotnet9; tools: skill, edit	—	❌ [9]
migrate-dotnet10-to-dotnet11	Console app with compression and TAR operations	3.3/5 → 4.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill / ✅ migrate-dotnet10-to-dotnet11; tools: skill	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	C# 15 compiler breaking changes — Span safe-context, nameof, with()	3.0/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view / ✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	EF Core app with Cosmos DB provider using sync APIs	4.7/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	❌ [10]
migrate-dotnet10-to-dotnet11	Deployment to older hardware with minimum requirement changes	2.3/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	Cryptography app using DSA on macOS	4.3/5 → 5.0/5 🟢	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	❌ [11]
migrate-dotnet10-to-dotnet11	Basic TFM update with Docker and global.json	4.0/5 → 4.0/5	✅ migrate-dotnet10-to-dotnet11; tools: skill, report_intent, view / ✅ migrate-dotnet10-to-dotnet11; tools: skill	✅ 0.05	✅
migrate-dotnet10-to-dotnet11	C# 15 dynamic operator and ref readonly delegate issues	2.7/5 → 2.7/5	✅ migrate-dotnet10-to-dotnet11; tools: report_intent, task, view, glob, grep, bash, skill / ✅ migrate-dotnet10-to-dotnet11; tools: report_intent, skill, view	✅ 0.05	❌ [12]
migrate-dotnet9-to-dotnet10	Console app with System.Linq.Async, SIGTERM, and BufferedStream	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	✅
migrate-dotnet9-to-dotnet10	Expression tree code broken by C# 14 span overload resolution	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view, bash, grep / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	❌ [13]
migrate-dotnet9-to-dotnet10	ASP.NET Core app with WebHostBuilder, OpenAPI, and forwarded headers	3.7/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	ASP.NET Core app with OpenAPI transformers using Microsoft.OpenApi v1 APIs	3.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, view, report_intent, bash / ✅ migrate-dotnet9-to-dotnet10; tools: skill, bash, report_intent, view	—	❌ [14]
migrate-dotnet9-to-dotnet10	EF Core app with Azure SQL JSON columns and parameterized collections	3.0/5 → 4.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	EF Core app with dynamic ExecuteUpdate and complex types	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [15]
migrate-dotnet9-to-dotnet10	SQLite app with DateTimeOffset timezone handling	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view, grep / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view, bash	—	❌ [16]
migrate-dotnet9-to-dotnet10	Worker service with config null array binding and ProviderAlias assembly change	4.0/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	✅
migrate-dotnet9-to-dotnet10	Cryptography app with OpenSSL, X.509, and Rfc2898DeriveBytes	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [17]
migrate-dotnet9-to-dotnet10	SDK and NuGet obscure tooling changes	4.0/5 → 4.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [18]
migrate-dotnet9-to-dotnet10	JSON polymorphism with conflicting property names and XmlSerializer	3.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	WinForms and WPF desktop app with System.Drawing and DynamicResource	2.0/5 → 4.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	Containerized single-file app with P/Invoke and IDispatchEx	3.3/5 → 5.0/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	App using SslStream properties and SystemEvents	5.0/5 → 5.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view	—	❌ [19]
migrate-dotnet9-to-dotnet10	Library with NuGet auditing, transitive deps, and InlineArray	4.0/5 → 4.3/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, task, view, grep / ✅ migrate-dotnet9-to-dotnet10; tools: skill, report_intent, view	—	❌ [20]
migrate-dotnet9-to-dotnet10	C# 14 compiler breaking changes — field keyword, extension keyword, disposal	4.3/5 → 4.7/5 🟢	✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view / ✅ migrate-dotnet9-to-dotnet10; tools: report_intent, skill, view	—	✅
migrate-dotnet9-to-dotnet10	Blazor WASM app with generic math shift masking and tar operations	4.0/5 → 4.0/5	✅ migrate-dotnet9-to-dotnet10; tools: skill, view, report_intent / ✅ migrate-dotnet9-to-dotnet10; tools: skill, view, report_intent	—	❌ [21]

[1] (Isolated) Quality unchanged but weighted score is -2.3% due to: tokens (13275 → 18679)
[2] (Isolated) Quality improved but weighted score is -1.3% due to: quality
[3] (Plugin) Quality improved but weighted score is -1.6% due to: tokens (176361 → 366745), tool calls (19 → 29), time (117.9s → 141.9s)
[4] (Isolated) Quality unchanged but weighted score is -9.6% due to: completion (✓ → ✗), tokens (65683 → 138477), time (156.3s → 225.0s)
[5] (Isolated) Quality improved but weighted score is -14.6% due to: judgment, tokens (166928 → 308255)
[6] (Isolated) Quality improved but weighted score is -3.1% due to: tokens (62053 → 233572), tool calls (15 → 25)
[7] (Isolated) Quality improved but weighted score is -12.2% due to: judgment, quality
[8] (Plugin) Quality unchanged but weighted score is -9.2% due to: tokens (107643 → 417908), time (72.2s → 156.7s), tool calls (18 → 30)
[9] (Plugin) Quality improved but weighted score is -3.3% due to: tokens (48491 → 134727), tool calls (10 → 18)
[10] (Isolated) Quality improved but weighted score is -19.3% due to: judgment, tokens (12939 → 46642), tool calls (0 → 3)
[11] (Isolated) Quality improved but weighted score is -19.2% due to: judgment, quality
[12] (Isolated) Quality unchanged but weighted score is -34.7% due to: quality, judgment, tokens (15570 → 40583), tool calls (0 → 5)
[13] (Isolated) Quality unchanged but weighted score is -5.9% due to: tokens (16824 → 79842), tool calls (0 → 5)
[14] (Isolated) Quality improved but weighted score is -20.3% due to: quality, judgment
[15] (Isolated) Quality unchanged but weighted score is -4.4% due to: tokens (31831 → 54296), tool calls (2 → 3)
[16] (Isolated) Quality unchanged but weighted score is -1.5% due to: tokens (53866 → 65934)
[17] (Isolated) Quality unchanged but weighted score is -15.3% due to: judgment, quality
[18] (Isolated) Quality unchanged but weighted score is -17.3% due to: judgment, quality
[19] (Plugin) Quality unchanged but weighted score is -1.0% due to: tokens (47589 → 56335)
[20] (Isolated) Quality improved but weighted score is -31.4% due to: judgment, quality, tokens (12911 → 101410), tool calls (0 → 8), time (24.6s → 47.4s)
[21] (Isolated) Quality unchanged but weighted score is -15.6% due to: judgment, quality, tokens (50940 → 56423), tool calls (5 → 6)

Model: claude-opus-4.6 | Judge: claude-opus-4.6

📖 See InvestigatingResults.md for how to diagnose failures. Additional debugging guidance may be provided by your workflow.

🔍 Full results — includes quality and agent details

To investigate failures, paste this to your AI coding agent:

For PR 406 in dotnet/skills, download eval artifacts with gh run download 23678315826 --repo dotnet/skills --pattern "skill-validator-results-*" --dir ./eval-results, then fetch https://raw.githubusercontent.com/dotnet/skills/9409400ea82a259713c75236e31478afd52f3b31/eng/skill-validator/InvestigatingResults.md and follow it to analyze the results.json files. Diagnose each failure, suggest fixes to the eval.yaml and skill content, and tell me what to fix first.