blender-impl-operators

Use when implementing complex Blender operators -- modal operators with timer callbacks, file browsers, batch processing, or multi-step workflows. Prevents the common mistake of blocking the UI thread in long operations instead of using modal + timer pattern. Covers modal operators, file browser integration, undo/redo support, progress reporting, and batch processing operators. Keywords: modal operator, timer callback, file browser, batch processing, progress reporting, undo support, multi-step workflow, INVOKE_DEFAULT, make custom button, add menu item, create toolbar button.

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