Add foundry-hosted-agent-copilotkit skill (#2226)

* Add foundry-hosted-agent-copilotkit skill (development-focused)

Reworked from PR #2090 feedback: drops all scaffolding/sample-template
content and focuses on ongoing development with CopilotKit + AG-UI +
Azure AI Foundry hosted agents — adding/gating tools, human-in-the-loop
approvals, generative UI and shared state, event-stream debugging,
pre-1.0 dependency upgrades, and the hosted-agent deploy loop.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Add HITL code examples to foundry-hosted-agent-copilotkit skill

Address review feedback: the .NET approval paragraph was prose-only.
Add a .NET snippet from the official Step04_HumanInLoop sample and
correct the type/behavior (ToolApprovalRequestContent; convert—not
remove—the request_approval call/result). Also add live-verified
Python snippets for hosted-agent approval-forwarding (#6652) and the
previous_response_id #6851 guard.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

docs/README.skills.md

@@ -175,6 +175,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-skills) for guidelines on how to
 | [fluentui-blazor](../skills/fluentui-blazor/SKILL.md)<br />`gh skills install github/awesome-copilot fluentui-blazor` | Guide for using the Microsoft Fluent UI Blazor component library (Microsoft.FluentUI.AspNetCore.Components NuGet package) in Blazor applications. Use this when the user is building a Blazor app with Fluent UI components, setting up the library, using FluentUI components like FluentButton, FluentDataGrid, FluentDialog, FluentToast, FluentNavMenu, FluentTextField, FluentSelect, FluentAutocomplete, FluentDesignTheme, or any component prefixed with "Fluent". Also use when troubleshooting missing providers, JS interop issues, or theming. | `references/DATAGRID.md`<br />`references/LAYOUT-AND-NAVIGATION.md`<br />`references/SETUP.md`<br />`references/THEMING.md` |
 | [folder-structure-blueprint-generator](../skills/folder-structure-blueprint-generator/SKILL.md)<br />`gh skills install github/awesome-copilot folder-structure-blueprint-generator` | Comprehensive technology-agnostic prompt for analyzing and documenting project folder structures. Auto-detects project types (.NET, Java, React, Angular, Python, Node.js, Flutter), generates detailed blueprints with visualization options, naming conventions, file placement patterns, and extension templates for maintaining consistent code organization across diverse technology stacks. | None |
 | [foundry-agent-sync](../skills/foundry-agent-sync/SKILL.md)<br />`gh skills install github/awesome-copilot foundry-agent-sync` | Create and synchronize prompt-based AI agents directly within Azure AI Foundry via REST API, from a local JSON manifest. Unlike scaffolding skills that only generate local code, this skill registers agents in the Foundry service itself — making them immediately available for invocation. Use when the user asks to create agents in Foundry, sync, deploy, register, or push agents to Foundry, update agent instructions, or scaffold the manifest and sync script for a new repository. Triggers: 'create agent in foundry', 'sync foundry agents', 'deploy agents to foundry', 'register agents in foundry', 'push agents', 'create foundry agent manifest', 'scaffold agent sync'. | None |
+| [foundry-hosted-agent-copilotkit](../skills/foundry-hosted-agent-copilotkit/SKILL.md)<br />`gh skills install github/awesome-copilot foundry-hosted-agent-copilotkit` | Ongoing development guidance for agentic web apps that pair a CopilotKit frontend with Microsoft Agent Framework agents on Azure AI Foundry hosted agents over the AG-UI protocol - add and gate agent tools, wire human-in-the-loop approvals, build generative UI and shared state, debug the event stream, upgrade pre-1.0 packages safely, and deploy hosted agent updates. | `references/architecture.md`<br />`references/deploy-loop.md`<br />`references/hitl.md`<br />`references/patterns.md`<br />`references/troubleshooting.md`<br />`references/upgrading.md` |
 | [freecad-scripts](../skills/freecad-scripts/SKILL.md)<br />`gh skills install github/awesome-copilot freecad-scripts` | Expert skill for writing FreeCAD Python scripts, macros, and automation. Use when asked to create FreeCAD models, parametric objects, Part/Mesh/Sketcher scripts, workbench tools, GUI dialogs with PySide, Coin3D scenegraph manipulation, or any FreeCAD Python API task. Covers FreeCAD scripting basics, geometry creation, FeaturePython objects, interface tools, and macro development. | `references/geometry-and-shapes.md`<br />`references/gui-and-interface.md`<br />`references/parametric-objects.md`<br />`references/scripting-fundamentals.md`<br />`references/workbenches-and-advanced.md` |
 | [from-the-other-side-anitta](../skills/from-the-other-side-anitta/SKILL.md)<br />`gh skills install github/awesome-copilot from-the-other-side-anitta` | Rigorous challenge profile for Anitta: assumption checks, evidence calibration, and defensible reasoning patterns for Ember collaboration. | None |
 | [from-the-other-side-quinn](../skills/from-the-other-side-quinn/SKILL.md)<br />`gh skills install github/awesome-copilot from-the-other-side-quinn` | Collaboration profile for Quinn: curious, energetic, and implementation-focused partnership patterns for Ember sessions with Alison. | None |