Replace refine_pr prompt with check_pr - a more assessment-focused approach

[Helmi]

Description

Transform the current refine_pr prompt into a new check_pr prompt that focuses on assessment and checking rather than automatically refining. The new prompt should be more open to the possibility that no changes might be needed.

Context

• Project area: MCP Server implementation - prompt templates
• Related prompts: Current refine_pr.yaml in /mcp-server/src/templates/prompts/
• Complexity assessment: 5/10 (moderate - requires refactoring existing functionality)

Technical Details

Affected files:

• /mcp-server/src/templates/prompts/refine_pr.yaml - Rename to check_pr.yaml and refactor content
• /mcp-server/CHANGELOG.md - Update any references to refine_pr
• Any documentation or code referencing the old prompt name

Requirements

1. Rename prompt: Change refine_pr to check_pr to better reflect its purpose
2. Assessment-first approach: The prompt should first check PR status before suggesting actions
3. Support multiple PRs:
   • Accept optional PR number argument for checking specific PR
   • If no argument provided, check all open PRs in the repository
4. Check CI/CD and reviews: Assess whether PRs have:
   • Passing CI/CD checks
   • Required reviews completed
   • Any blocking issues or feedback
5. User confirmation required:
   • Only suggest work or merging after assessment
   • Require explicit user confirmation before:
     • Making any changes to address feedback
     • Merging PRs that are ready
6. Flexible outcomes: Recognize that PRs might:
   • Be ready to merge as-is
   • Need minor adjustments
   • Require significant work
   • Be blocked by external factors

Implementation Steps

• Create new check_pr.yaml based on existing refine_pr.yaml
• Refactor prompt logic to be assessment-focused
• Add logic to check all open PRs when no specific PR provided
• Implement CI/CD status checking
• Add review status assessment
• Include user confirmation steps before actions
• Update any references to old prompt name
• Test the new prompt with various PR scenarios
• Update documentation

Acceptance Criteria

• New check_pr prompt exists and functions correctly
• Old refine_pr references are removed or updated
• Prompt can check single PR or all open PRs
• Assessment happens before any action suggestions
• User confirmation is required before changes or merging
• Prompt handles various PR states gracefully