[ENGINEERING] Code Quality: Reduce unsafe panic points (unwrap/expect)

[developerfred]

Problem

Found 231 instances of unwrap(), expect(), and panic!() across 28 files. These are potential runtime panics that should be converted to proper error handling.

Files with Most Issues

• src/compiler/parser/parser.rs - 79 instances
• src/compiler/parser/tests.rs - 25 instances
• src/security/security_scanner.rs - 20 instances
• src/compiler/codegen/tests.rs - 14 instances
• src/compiler/optimizer/tests.rs - 14 instances

Impact

• Potential for panics in production
• Poor user experience when errors occur
• Makes debugging harder

Recommendation

1. Convert unwrap/expect in production code to Result<T, E> with ? operator
2. Keep unwrap/expect in tests (acceptable for test code)
3. Use thiserror for custom error types
4. Consider using anyhow for application-level error handling

Priority

High - These affect production stability

Labels

• engineering
• code-quality
• help-wanted

[developerfred]

Partially fixed in PR #75, #83 - Critical unwraps in production code fixed. Remaining unwraps are in test code which is acceptable.