👨‍💻 Add workflow description extraction feature

[dsyme]

Summary

Added a new feature to extract and display workflow descriptions from markdown files when adding or trialing workflows.

Changes

• Created new functions ExtractWorkflowDescription() and ExtractWorkflowDescriptionFromFile() in pkg/cli/packages.go
• Added comprehensive unit tests for description extraction in pkg/cli/add_description_test.go
• Updated addWorkflowWithTracking() and RunWorkflowTrials() to display workflow descriptions
• Handles various edge cases like missing descriptions, multi-line descriptions, and non-existent files

Benefits

• Provides additional context when adding or trying out workflows
• Improves user experience by showing workflow purpose at a glance
• Adds robust description parsing with thorough test coverage

Testing

• Added unit tests covering different description scenarios
• Tested extraction from workflow markdown files with varying frontmatter

[Copilot]

Pull Request Overview

This pull request adds workflow description extraction functionality to display workflow descriptions from markdown frontmatter when adding or trialing workflows. The implementation includes two new extraction functions, comprehensive unit tests, and integrations at two key points in the workflow lifecycle.

Key Changes

• New extraction functions: Added ExtractWorkflowDescription() and ExtractWorkflowDescriptionFromFile() in packages.go to parse description fields from YAML frontmatter
• Display integration: Updated addWorkflowWithTracking() and RunWorkflowTrials() to show extracted descriptions to users
• Workflow metadata: Added description fields to 50+ workflow markdown files with clear, informative descriptions

Reviewed Changes

Copilot reviewed 153 out of 153 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/cli/packages.go	Implements description extraction from workflow content and files with graceful error handling
pkg/cli/add_description_test.go	Comprehensive unit tests covering various description scenarios including edge cases
pkg/cli/add_command.go	Integrates description display after workflow installation with formatted output
pkg/cli/trial_command.go	Integrates description display during trial mode workflow installation
.github/workflows/*.md	Adds descriptive metadata to 50+ workflow definitions for better discoverability
.github/workflows/*.lock.yml	Compiled workflow outputs reflecting description additions and formatting updates

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