fix(Copilot): GH copilot app md compatiblity (#1121)

# 📥 Pull Request

## ❓ What are you trying to address

- Fix repository skills and agents failing to load because of invalid or
missing YAML frontmatter.

## ✨ Description of new changes

- Corrected frontmatter for five skills and added required frontmatter
to four agents.
- Verified the metadata parses and agent prompt content is unchanged.

.github/agents/fabric-item-implementor.agent.md

@@ -1,3 +1,9 @@
+---
+name: fabric-item-implementor
+description: >-
+  Implement or enhance Microsoft Fabric Item resources in this Terraform provider from GitHub issues, following the fabricitem abstraction and itemgen patterns.
+---
+
 # Fabric Item Implementor Agent
 
 You are the **Fabric Item Implementor** agent for the Terraform Provider for Microsoft Fabric (`microsoft/terraform-provider-fabric`). Your job is to take a GitHub issue and either **create a new Fabric Item resource** or **enhance an existing one** with new properties/configuration fields.

.github/agents/non-item-implementor.agent.md

@@ -1,3 +1,9 @@
+---
+name: non-item-implementor
+description: >-
+  Implement or enhance bespoke non-item resources in this Terraform provider from GitHub issues, following the repository's superschema and CRUD patterns.
+---
+
 # Non-Item Implementor Agent
 
 You are the **Non-Item Implementor** agent for the Terraform Provider for Microsoft Fabric (`microsoft/terraform-provider-fabric`). Your job is to take a GitHub issue and either **create a new non-item resource** or **enhance an existing one** with new fields or capabilities.

.github/agents/resource-designer.agent.md

@@ -1,3 +1,9 @@
+---
+name: resource-designer
+description: >-
+  Research Microsoft Fabric API and SDK support, design Terraform schemas, and create well-structured GitHub issues for provider resources and enhancements.
+---
+
 # Resource Designer Agent
 
 You are the **Resource Designer** agent for the Terraform Provider for Microsoft Fabric (`microsoft/terraform-provider-fabric`). Your job is to research a user's resource request, validate SDK support, design the Terraform schema approach, and create properly-formatted GitHub issues as design artifacts.

.github/agents/wellknown-setup.agent.md

@@ -1,3 +1,9 @@
+---
+name: wellknown-setup
+description: >-
+  Prepare well-known Fabric and Azure test infrastructure required by Terraform provider acceptance tests for new resources.
+---
+
 # Well-Known Setup Agent
 
 You are the **Well-Known Setup** agent for the Terraform Provider for Microsoft Fabric (`microsoft/terraform-provider-fabric`). Your job is to ensure the testing infrastructure (well-known resources) is properly configured before implementation begins.

.github/skills/itemgen-command-builder/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: itemgen-command-builder
-description: Given SDK analysis results, automatically determine the correct itemgen archetype and build the full go run tools/itemgen/main.go command. USE FOR: scaffolding new Fabric Item resources using the itemgen code generator. Only applies to Fabric Item resources (not bespoke resources like Connection, Gateway, Workspace).
+description: >-
+  Given SDK analysis results, automatically determine the correct itemgen archetype and build the full go run tools/itemgen/main.go command. USE FOR: scaffolding new Fabric Item resources using the itemgen code generator. Only applies to Fabric Item resources (not bespoke resources like Connection, Gateway, Workspace).
 ---
 
 # Skill: Itemgen Command Builder

.github/skills/resource-designer/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: resource-designer
-description: Research SDK contracts, design Terraform schema approach, and compose a GitHub issue for a new resource, data source, ephemeral resource, or enhancement to an existing resource. USE FOR: analyzing SDK DTOs, determining design patterns (polymorphic flattening, immutability, enum filtering), and creating well-structured GitHub issues. INVOKES: GitHub MCP tools for issue creation, sdk-contract-navigator skill for SDK analysis.
+description: >-
+  Research SDK contracts, design Terraform schema approach, and compose a GitHub issue for a new resource, data source, ephemeral resource, or enhancement to an existing resource. USE FOR: analyzing SDK DTOs, determining design patterns (polymorphic flattening, immutability, enum filtering), and creating well-structured GitHub issues. INVOKES: GitHub MCP tools for issue creation, sdk-contract-navigator skill for SDK analysis.
 ---
 
 # Skill: Resource Designer

.github/skills/schema-model-generator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: schema-model-generator
-description: Given a Go SDK contract (DTOs), generate the corresponding Terraform schema attributes and model structs with high fidelity. USE FOR: creating schema_*.go and models.go files from SDK DTOs, mapping Go types to Terraform attribute types and custom types.
+description: >-
+  Given a Go SDK contract (DTOs), generate the corresponding Terraform schema attributes and model structs with high fidelity. USE FOR: creating schema_*.go and models.go files from SDK DTOs, mapping Go types to Terraform attribute types and custom types.
 ---
 
 # Skill: Schema & Model Generator

.github/skills/sdk-contract-navigator/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: sdk-contract-navigator
-description: Navigate the fabric-sdk-go SDK source to find the correct client factory, DTOs, item type constants, and pager methods for a given Fabric Item or non-item resource. USE FOR: identifying SDK packages, client factories, DTO structs, item type constants, and pager methods for any Fabric resource.
+description: >-
+  Navigate the fabric-sdk-go SDK source to find the correct client factory, DTOs, item type constants, and pager methods for a given Fabric Item or non-item resource. USE FOR: identifying SDK packages, client factories, DTO structs, item type constants, and pager methods for any Fabric resource.
 ---
 
 # Skill: SDK Contract Navigator

.github/skills/wellknown-analyzer/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: wellknown-analyzer
-description: Analyze dependencies and determine what infrastructure must be added to tools/scripts/Set-WellKnown.ps1 and internal/testhelp/wellknown.go so that acceptance tests for a new resource have all required pre-requisite resources available. USE FOR: analyzing well-known test fixture requirements for new resources, determining creation strategies, and generating code snippets for Set-WellKnown.ps1 and wellknown.go additions.
+description: >-
+  Analyze dependencies and determine what infrastructure must be added to tools/scripts/Set-WellKnown.ps1 and internal/testhelp/wellknown.go so that acceptance tests for a new resource have all required pre-requisite resources available. USE FOR: analyzing well-known test fixture requirements for new resources, determining creation strategies, and generating code snippets for Set-WellKnown.ps1 and wellknown.go additions.
 ---
 
 # Skill: Well-Known Analyzer