fix: Resolve 4 TODO/FIXME items in model/position.rs

[joaquinbejar]

Issue #5: Resolve TODOs in model/position.rs

Title

fix: Resolve 4 TODO/FIXME items in model/position.rs

Labels

• bug
• model
• priority-medium

Description

The file src/model/position.rs contains 4 TODO/FIXME comments that need to be addressed.

Current State

• 4 unresolved TODO/FIXME comments
• Position management may have incomplete functionality
• Edge cases may not be handled correctly

Target State

• All TODO/FIXME comments resolved
• Complete position management functionality
• All edge cases properly handled

Tasks

• Review each TODO/FIXME comment in the file
• Document what each TODO requires
• Implement missing functionality for each item
• Add tests for resolved items
• Remove TODO comments once resolved
• Run make lint-fix and make pre-push to verify

Acceptance Criteria

• All TODO/FIXME comments are resolved
• Position management works correctly
• Tests verify the resolved functionality
• No regression in existing functionality

Technical Notes

Files to Update

• src/model/position.rs (primary)
• src/error/position.rs (if new errors needed)
• Related test files

Estimated Effort

Low (2-3 hours)

Dependencies

None

Related Issues

• Issue Feature/use decimal #4: Resolve TODOs in black_scholes_model.rs

[joaquinbejar]

All TODO/FIXME items in model/position.rs have already been resolved in previous commits (see PR #259 and related refactoring work).