Add WinForms MCP and skills

[johnml1135]

Summary

This PR is now scoped just to WinForms MCP and the supporting automation/screenshot skills needed for FieldWorks live UI automation work.

Included

• Add a FieldWorks WinForms/WinApp automation skill under .github/skills/fieldworks-winapp.
• Add a Windows-focused screenshot capture skill under .github/skills/smart-screenshot-capture.
• Add winforms-mcp to .vscode/mcp.json with headless net48 settings.
• Document WinForms MCP/UIA2 and WinApp/UIA3 fallback usage in Docs/mcp.md.

Excluded

• Render benchmark infrastructure, render baselines, native render/cache changes, and OpenSpec render-speedup artifacts.
• Skill relocation to .agents/skills, which remains separate from this PR.
• LT-22324 font-option implementation behavior.

Verification

• git diff --name-status cleanup/non-render-pr-split...HEAD
• git diff --check cleanup/non-render-pr-split...HEAD
• python -m json.tool .vscode/mcp.json
• git grep -n "LT-22324" -- .github/skills/fieldworks-winapp returned no matches

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This change is 

[Copilot]

Copilot wasn't able to review this pull request because it exceeds the maximum number of files (300). Try reducing the number of changed files and requesting a review from Copilot again.

[jasonleenaylor]

Build/Agent/fix-whitespace.ps1 line 13 at r1 (raw file):

}

function Test-HasUtf8Bom {

Was removing this intentional? It seemed this would produce less churn in the repo with it in.

[johnml1135]

Good catch. That removal wasn't intentional. I restored the BOM-preserving behavior in Build/Agent/fix-whitespace.ps1 so the whitespace fixer keeps existing UTF-8 BOMs and avoids unnecessary churn. The fix is on the branch now in 47111a3.

[johnml1135]

Follow-up after the PR split cleanup: Build/Agent/fix-whitespace.ps1 is no longer part of #869. This PR now contains only the 12 UI automation support files. The BOM-preserving whitespace-fixer change belongs with the base cleanup layer instead, so if you want to review that script change specifically, please look at the base branch/PR rather than this support-only PR.

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

.github/skills/fieldworks-winapp/SKILL.md:1

• The skill name fieldworks-winapp suggests it is WinApp-only, but the skill is explicitly dual-driver (WinForms MCP + WinApp fallback). Consider renaming the skill to reflect its scope (e.g., fieldworks-ui-automation or fieldworks-winforms-winapp) to avoid incorrect discovery/selection by authors and agents.

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[jasonleenaylor]

.github/skills/code-review-skill-main/CONTRIBUTING.md line 1 at r6 (raw file):

# Contributing to AI Code Review Guide

I'm confused about this file.

[jasonleenaylor]

@jasonleenaylor reviewed 19 files and all commit messages, and made 1 comment.
Reviewable status: 19 of 208 files reviewed, 2 unresolved discussions.

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.github/skills/code-review-skill-main/SKILL.md line 1 at r6 (raw file):

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I have questions about this skill and how/if we should integrate it. It doesn't seem closely related to the automation support yet (still reviewing)

[github-actions]

NUnit Tests

    1 files  ±0      1 suites  ±0   10m 47s ⏱️ +14s
4 205 tests ±0  4 134 ✅ ±0  71 💤 ±0  0 ❌ ±0 
4 214 runs  ±0  4 143 ✅ ±0  71 💤 ±0  0 ❌ ±0 

Results for commit 45ed34a. ± Comparison against base commit 5ce891b.

[johnml1135]

.github/skills/code-review-skill-main/CONTRIBUTING.md line 1 at r6 (raw file):

Previously, jasonleenaylor (Jason Naylor) wrote…

I'm confused about this file.

Moved to the review skills PR.

[johnml1135]

.github/skills/code-review-skill-main/SKILL.md line 1 at r6 (raw file):

Previously, jasonleenaylor (Jason Naylor) wrote…

I have questions about this skill and how/if we should integrate it. It doesn't seem closely related to the automation support yet (still reviewing)

Moved to the review skills PR.