feat(#157): update PR description generation requirements

- Add mandatory steps for reading prompt and template files
- Specify output structure and folder creation for PR descriptions

Author: stiwicourage

.github/prompts/pr-description.prompt.md

@@ -28,12 +28,22 @@ Analyze the provided input and:
 
 Be pragmatic: if information is missing, make reasonable assumptions but call them out briefly.
 
----
+Before generating the PR description, you MUST:
 
-## Output format
+- Read this prompt file from `.github/prompts/pr-description.prompt.md` directly, even if hidden folders were not
+  surfaced by an earlier search.
+- Read `.github/pull_request_template.md` directly and treat it as authoritative.
+- Resolve all relative paths from the repository root.
+- Treat `./pr-descriptions/` as a repository-root-relative output folder.
+- Never assume `.github/` content is missing just because a previous listing or glob search did not show hidden folders.
 
-You MUST return the PR description using this exact structure:
+---
 
-### Pull Request Template
+## Output format
 
-.github/pull_request_template.md
+You MUST return the PR description using this exact structure, you will find the template in
+`.github/pull_request_template.md`:
+You MUST fill in all sections, and you MUST NOT modify the template structure.
+You MUST create a *.md file in the `./pr-descriptions/` folder with the same name as the PR title, and write the
+generated description there.
+If the folder does not exist yet, you MUST create it under the repository root before writing the file.

.github/workflows/Tests.yml

@@ -35,7 +35,6 @@ jobs:
 
       - name: Validate repository changelog with Test-KeepAChangelogFile
         run: |
-          Import-Module ./dist/KeepAChangelog/KeepAChangelog.psd1 -Force
           $result = Test-KeepAChangelogFile -Path ./CHANGELOG.md
           if (-not $result.IsValid) {
             throw ($result.Errors -join [Environment]::NewLine)