fix(makefile): Fix Cloud Run deployment environment variable syntax

[xCatG]

Summary

• Fixed trailing whitespace after backslashes in Makefile line continuations
• Resolves "Bad syntax for dict arg" error when deploying to Cloud Run
• Lines 243-245 in CLOUD_RUN_ENV_VARS_LIST definition had spaces after backslashes

Test plan

• Verify Makefile syntax is correct
• Test make deploy command works without gcloud errors
• Confirm Cloud Run deployment succeeds

🤖 Generated with Claude Code

[claude]

Claude finished @xCatG's task —— View job

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PR Review Complete ✅

Todo List

• Read and analyze the Makefile changes
• Review code quality and best practices
• Check for potential bugs or issues
• Assess performance considerations
• Evaluate security concerns
• Review test coverage implications
• Provide comprehensive feedback

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Code Review Feedback

✅ Fix Quality: Excellent

This is a high-quality, focused fix that addresses a specific deployment issue:

• Root Cause: Lines 243-245 in CLOUD_RUN_ENV_VARS_LIST had trailing whitespace after backslashes
• Impact: Trailing spaces break Makefile line continuation syntax, causing gcloud deployment failures
• Solution: Clean removal of trailing whitespace while preserving proper line continuation

✅ Code Quality & Best Practices

• Minimal Change: Only touches the problematic lines (243-245) - excellent surgical approach
• Syntax Compliance: Now follows proper Makefile line continuation syntax (\ must be last character)
• Consistency: Aligns with other line continuations in the same variable definition
• No Logic Changes: Pure whitespace fix with no functional side effects

✅ Potential Bugs/Issues

• No New Issues: This fix resolves an existing bug without introducing new ones
• Deployment Error Resolved: Should eliminate the "Bad syntax for dict arg" gcloud error
• Backward Compatible: No impact on existing functionality

✅ Performance Considerations

• No Performance Impact: Whitespace changes don't affect runtime performance
• Deployment Efficiency: Fixing the syntax error will allow deployments to succeed on first try

✅ Security Considerations

• No Security Impact: This is a pure syntax fix with no security implications
• Environment Variables: The actual environment variable values remain unchanged
• Configuration Integrity: Maintains existing security configurations

✅ Test Coverage

• Test Plan Appropriate: The PR includes a reasonable test plan:
  • Verify Makefile syntax ✓
  • Test make deploy command
  • Confirm Cloud Run deployment succeeds
• Validation Strategy: Manual testing is appropriate for this type of infrastructure fix
• Low Risk: Whitespace changes are unlikely to break existing functionality

🎯 Recommendations

1. Ready to Merge: This is a solid, low-risk fix that should be merged promptly
2. Testing: Complete the remaining test plan items to validate the deployment fix
3. Future Prevention: Consider adding a pre-commit hook or linter to catch trailing whitespace in Makefiles

📋 Summary

This PR effectively resolves a Makefile syntax issue that was preventing Cloud Run deployments. The fix is minimal, focused, and follows best practices for this type of correction. Approved for merge once the deployment testing is complete.