add backend instructions

[breardon2011]

[greptile-apps]

Greptile Summary

This PR enhances the backend's comment generation functionality by adding instruction helpers to PR comments. The change introduces a new formatExampleCommands() function that creates a collapsible markdown section containing example digger apply and digger unlock commands. This function is then integrated into the existing GenerateRealtimeCommentMessage() function to append these instructions after the main table content.

The implementation directly addresses a consistency gap between the CLI and backend comment formats. Previously, the CLI's BasicCommentUpdater included helpful instruction sections in PR comments, while the backend's comment generation lacked these user guidance features. The new functionality uses the exact same markdown structure and command examples as the CLI implementation, ensuring a uniform user experience across all Digger-generated comments.

The instructions are strategically placed after the main table but before the comment length validation, ensuring visibility while respecting GitHub's comment length constraints. This change fits into the broader comment utility system that manages PR interactions and helps users understand available actions directly within their pull request workflow.

Confidence score: 4/5

• This PR is safe to merge with minimal risk as it only adds instructional content to existing comments
• Score reflects simple, additive changes that enhance user experience without modifying core functionality
• No files require special attention as the changes are straightforward and well-contained

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[bismuthdev]

Bismuth completed its review and found no issues.