Optimize install.md for Copilot agent-driven repository setup

[Copilot]

Rewrite install.md for GitHub Copilot Agent Scenario ✅

Goal: Optimize install.md for the scenario where a GitHub Copilot agent helps a user configure their repository to use Agentic Workflows by running gh aw init.

All Tasks Completed ✅

• Analyze current install.md structure and content
• Understand the target scenario (Copilot agent + user interaction)
• Design new structure optimized for:
  • Agent-driven setup flow
  • Single key command: gh aw init
  • Minimal manual steps
  • Clear expectations
• Rewrite install.md with new structure:
  • Brief introduction to what gh-aw is
  • Main action: run gh aw init (interactive mode by default)
  • What gh aw init does in detail
  • Alternative non-interactive mode with flags
  • Post-init next steps
  • Troubleshooting section
  • Agent guidelines for helping users
  • Additional resources and security best practices
• Review and test the new content
• Run code review (passed with no comments)
• Revert all .yml file changes (per feedback)

Key Changes Summary

Structure:

• Changed from "Interactive Setup Wizard" to "Setup Guide for GitHub Copilot Agents"
• Streamlined from verbose step-by-step to focused quick setup
• Emphasized gh aw init as the primary command
• Added "Agent Guidelines" section with best practices

Content:

• Removed verbose conversational instructions (agents can be conversational naturally)
• Highlighted interactive mode as default (no flags needed)
• Explained what gh aw init does comprehensively
• Simplified secret configuration steps
• Added troubleshooting for common issues
• Included agent-specific guidance at the end

Metrics:

• Reduced from 334 lines to 262 lines (21% reduction)
• 133 insertions, 204 deletions in install.md
• Maintained all essential information while improving clarity

Reverted changes:

• Reverted all 140 .yml workflow files to their original state
• Reverted pkg/workflow/data/action_pins.json
• Only install.md changes remain in this PR

Testing Results

✅ File structure and content reviewed
✅ All sections present and logically organized
✅ Valid markdown format confirmed
✅ Code review passed with no comments
✅ File successfully committed and pushed
✅ All .yml file changes reverted as requested

Original prompt

Rewrite the install.md file (https://github.com/githubnext/gh-aw/blob/main/install.md) to optimize for the github copilot agent scenario where the user starts an agentic task which should configure the repository to use AW. It should run "gh aw init".

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[pelikhan]

@copilot revert .yml file changes

[Copilot]

@copilot revert .yml file changes

Reverted all .yml file changes in commit d29fa33. The PR now only contains changes to install.md.