feat: add PSModule process marketplace

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

Author: MariusStorhaug

.github/plugin/README.md

@@ -0,0 +1,27 @@
+# PSModule process marketplace
+
+This repository is a GitHub Copilot CLI plugin marketplace. The marketplace
+and its `psmodule-process` plugin are versioned **1.0.0**.
+
+## Install
+
+Add the marketplace and install the plugin:
+
+```console
+copilot plugin marketplace add PSModule/Process-PSModule
+copilot plugin install psmodule-process
+```
+
+The plugin provides the
+[`pester-migration`](./plugins/psmodule-process/skills/pester-migration/SKILL.md)
+skill for migrating every Pester test set in a PSModule repository to Pester
+6.1.0. Verify the installation with:
+
+```console
+copilot plugin list
+/skills list
+```
+
+The marketplace manifest is
+[`marketplace.json`](./marketplace.json); plugin metadata is in
+[`plugin.json`](./plugins/psmodule-process/plugin.json).

.github/plugin/marketplace.json

@@ -0,0 +1,18 @@
+{
+  "name": "psmodule-process",
+  "owner": {
+    "name": "PSModule"
+  },
+  "metadata": {
+    "description": "Plugins for building, testing, documenting, and publishing PowerShell modules with the PSModule process.",
+    "version": "1.0.0"
+  },
+  "plugins": [
+    {
+      "name": "psmodule-process",
+      "description": "PSModule process guidance and reusable skills for PowerShell module repositories.",
+      "version": "1.0.0",
+      "source": "./plugins/psmodule-process"
+    }
+  ]
+}

.github/plugin/plugins/psmodule-process/plugin.json

@@ -0,0 +1,19 @@
+{
+  "name": "psmodule-process",
+  "description": "PSModule process guidance and reusable skills for PowerShell module repositories.",
+  "version": "1.0.0",
+  "author": {
+    "name": "PSModule",
+    "url": "https://github.com/PSModule"
+  },
+  "repository": "https://github.com/PSModule/Process-PSModule",
+  "license": "MIT",
+  "keywords": [
+    "powershell",
+    "psmodule",
+    "pester",
+    "testing",
+    "github-actions"
+  ],
+  "skills": "skills/"
+}

skills/pester-migration/SKILL.md …process/skills/pester-migration/SKILL.mdskills/pester-migration/SKILL.md renamed to .github/plugin/plugins/psmodule-process/skills/pester-migration/SKILL.md skills/pester-migration/SKILL.md renamed to .github/plugin/plugins/psmodule-process/skills/pester-migration/SKILL.md

@@ -5,8 +5,10 @@ description: A repository-wide checklist for migrating PSModule test sets to Pes
 
 # Migrating Pester tests
 
-Use the reusable [`pester-migration`](https://github.com/PSModule/Process-PSModule/tree/main/skills/pester-migration/SKILL.md)
-agent skill to migrate every Pester test set in a PSModule repository. It is
+Install the version 1.0.0 [`psmodule-process` marketplace
+plugin](https://github.com/PSModule/Process-PSModule/tree/main/.github/plugin/marketplace.json)
+and use its reusable `pester-migration` agent skill to migrate every Pester test
+set in a PSModule repository. It is
 written for Pester **6.1.0** and distinguishes required compatibility changes
 from optional v6 modernization.
 

docs/content/guides/pester-migration.md

@@ -41,6 +41,7 @@ Task-oriented deep dives into the pipeline's functionality.
 | [Structuring your module](guides/structuring-your-module.md) | The repository and module source layout the workflow expects, and how to declare dependencies. |
 | [Writing module tests](guides/writing-module-tests.md) | Test discovery, setup and teardown phases, and shared test infrastructure. |
 | [Migrating Pester tests](guides/pester-migration.md) | A repository-wide checklist for migrating every test set to Pester 6.1.0. |
+| [PSModule process marketplace](https://github.com/PSModule/Process-PSModule/tree/main/.github/plugin) | Install the version 1.0.0 Copilot CLI plugin and its reusable skills. |
 | [Skipping framework tests](guides/skipping-framework-tests.md) | Skip individual framework tests on a per-file basis. |
 | [Versioning and releases](guides/versioning-and-releases.md) | Label-driven versioning, prereleases, and what a release produces. |
 | [Validating before review](guides/validating-before-review.md) | The PSModule validation pass before a draft pull request is marked ready. |