🟡 MEDIUM: Address 30+ TODO/FIXME comments

[arkavo-com]

Problem

The codebase contains 30+ TODO/FIXME comments indicating incomplete implementation or known issues.

Notable Examples

File	Line	Comment
AuthenticationManager.swift	187	// FIXME: major issue - user is lost from the backend
ArkavoMessageRouter.swift	78	// FIXME: hack, not sure why I am getting 064c31
ChatView.swift	348	// TODO: Notify user of failure

Impact

• Technical debt accumulating
• Known bugs not being tracked
• Incomplete features shipped
• Difficult to assess project health

Solution

1. Audit all TODO/FIXME comments
2. Create GitHub issues for each significant one
3. Either fix immediately or add to backlog
4. Remove or update comments after addressing

Acceptance Criteria

• All TODO/FIXME comments audited
• Critical ones converted to issues
• Non-critical ones documented in backlog
• No orphaned TODO comments