Fix YAML syntax error in codeql.yml and clean up README

[Copilot]

Overview

This PR addresses critical issues found during code review validation, fixing a YAML parsing error that would prevent the CodeQL workflow from running and cleaning up outdated documentation text.

Issues Fixed

1. YAML Syntax Error in .github/workflows/codeql.yml

Problem: A malformed duplicate with: block starting at line 101 caused YAML parsing errors:

# Before (invalid YAML)
- name: Cache
  uses: actions/cache@v4.3.0
  with:
    path: ~/.cache 
    key: ${{ runner.os }}-codeql-cache-${{ github.sha }}
with:  # ❌ Duplicate/misplaced 'with:' block
    key: ${{ steps.restore-cache.outputs.cache-primary-key }} 
    restore-keys: # optional
    # ... many commented-out optional parameters

Solution: Removed the duplicate with: block and properly configured the cache action with appropriate restore-keys:

# After (valid YAML)
- name: Cache
  uses: actions/cache@v4.3.0
  with:
    path: ~/.cache 
    key: ${{ runner.os }}-codeql-cache-${{ github.sha }}
    restore-keys: |
      ${{ runner.os }}-codeql-cache-

This fix ensures the CodeQL workflow can execute without YAML parsing failures.

2. Outdated Text in README.md

Problem: The README still contained generic GitHub Desktop tutorial text:

Write your name on line 6, save it, and then head back to GitHub Desktop.

Solution: Removed the outdated tutorial text, allowing the README to properly reflect RepoPilot MVP functionality as recommended in the code review.

Validation

All validation tests pass successfully:

• ✅ All 3 YAML workflow files validated
• ✅ All 3 JSON policy files validated
• ✅ All 3 shell scripts pass bash syntax check
• ✅ All 3 shell scripts pass shellcheck with no warnings

Related Documentation

These changes implement recommendations from the Code Review Summary, specifically addressing the "Update README.md" optional improvement and fixing a previously undetected YAML syntax error.

Original prompt

검토

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[parkcheolhong]

수고했습니다.

[Copilot]

Pull Request Overview

This PR fixes a critical YAML syntax error in the CodeQL workflow that would prevent it from running and removes outdated tutorial text from the README.

• Fixed duplicate with: block causing YAML parsing failure in CodeQL workflow
• Properly configured cache action with appropriate restore-keys parameter
• Removed outdated GitHub Desktop tutorial text from README

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/codeql.yml	Fixed YAML syntax by removing duplicate with: block and configuring proper cache restore keys
README.md	Removed outdated tutorial text to clean up documentation

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[parkcheolhong]

key: ${{ runner.os }}-codeql-cache-${{ github.sha }}

[parkcheolhong]

키 값을 이곳에서 적용하면 된다고 한 것 같은데? 키값을 다시 적용함