Remove dead code and unused exports

[thedhanawada]

Dead Code to Remove

• loadView() method
• _viewUnsubscribe property
• Unused DOMUtils methods
• Singleton eventBus export (dangerous — uses wrong bus instance)

Audit all exports and remove anything not used by the public API.

[thedhanawada]

Resolved. All exports in src/index.js are intentional public API. Previous cleanup PRs (#25, #32) already removed dead code and unused exports. No orphaned code remains.