Enhance documentation for gitStream CM guidelines and file exclusions

[vim-zz]

✨ PR Description

Purpose: Enhance gitStream documentation with iterative guidelines workflow and improve organization of file exclusion information.

Main changes:

• Added workflow section for iterative guidelines refinement using the Playground
• Reorganized guidelines loading documentation into a structured table format
• Improved file exclusions section by moving it to a collapsible element for better readability

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We'd love your feedback! 🚀}

[orca-security-us]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[gitstream-cm]

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[gitstream-cm]

✨ PR Review

The PR enhances documentation structure with better organization and adds helpful workflow guidance. However, there's a content accuracy issue in the lock files categorization.

1 issues detected:

🧾 Readability - Build configuration files are incorrectly labeled as lock files in the documentation table.

Details: Several files in the lock files table are incorrectly categorized as lock files when they are actually build configuration files. This could mislead users about which files are excluded from AI review and their actual purpose.
File: docs/automation-actions.md

Generated by LinearB AI and added by gitStream.
_{AI-generated content may contain inaccuracies. Please verify before using. We'd love your feedback! 🚀}

[MishaKav]

I think we can't put guidelines: {{ "./REVIEW_RULES.md" | readFile() | dump }}
we should assign this to variable first: REVIEW_RULES: {{ "./REVIEW_RULES.md" | readFile() | dump }} and then pass to guidelines

#753

[shaked-hadas]

I think we can't put guidelines: {{ "./REVIEW_RULES.md" | readFile() | dump }} we should assign this to variable first: REVIEW_RULES: {{ "./REVIEW_RULES.md" | readFile() | dump }} and then pass to guidelines

#753

I've tried that also, and it still didn't work, throws the same error