Add find and replace for entity names

[aadorian]

Description

Stanford Protégé has refactoring tools including the ability to rename entities across the ontology.

What to implement

Add a find/replace dialog that:

• Searches entity names (local names or labels)
• Shows preview of matches
• Allows batch renaming
• Updates all references

Difficulty: Medium

Skills: React, Refactoring

Tasks

• Create Find/Replace dialog component
• Implement search across entity names
• Show preview of changes
• Implement batch rename with reference updates

Acceptance Criteria

• Can search for entity names
• Preview shows all matches
• Rename updates the entity and all references
• Can undo rename operation