IDE Modernization

Breaking up the monolithic SikulixIDE.java (3000+ lines) into focused manager classes.

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The Problem

SikulixIDE.java was a God class handling:

• Window management
• All menus (File, Edit, Run, View, Tool, Help)
• All menu actions
• Editor tab management
• Script execution
• File operations
• Recent files tracking
• Undo/redo state

What Was Extracted

Class	Lines	Responsibility	PR
IDEMenuManager	1,078	Menu creation, action classes, menu state	#6, #7
IDEWindowManager	—	Window lifecycle, positioning	branch
IDEFileManager	—	File operations, recent files	branch
IDERunManager	—	Script execution, abort	branch
PaneContext	—	Editor tab state (was inner class)	branch

Architecture

Before:
  SikulixIDE ─── everything (3000+ lines)

After:
  SikulixIDE ─── window + tabs + coordination
      ├── IDEMenuManager ─── menus + actions
      ├── IDEWindowManager ─── window lifecycle
      ├── IDEFileManager ─── file operations
      └── IDERunManager ─── script execution

Status

• IDEMenuManager is merged into master (#6, #7)
• Other managers are on branch claude/modernize-oculix-ide-sgjuh
• Java 17 modernization (var, try-with-resources, pattern matching) also on that branch