YB-LIM/InpLite ? reverse-engineered prompt

Build me a fast Windows desktop app for editing Abaqus .inp files, especially huge ones with millions of node and element lines. I want it to open big files quickly without freezing, show syntax highlighting, line numbers, search, go to line or label, and let me jump to definitions or references for sets, materials, amplitudes, and include files.

It should detect problems in the background, like bad keywords, missing parameters, undefined sets, duplicate labels, and wrong element connectivity, then show those issues clearly without slowing down typing. Large data sections should stay lightweight, maybe shown as a compact placeholder in the editor with a separate viewer for scrolling through them. Saving should preserve the untouched file bytes exactly, with safe save behavior and backup support.

Also include an outline panel for parts, assemblies, materials, and steps, plus basic autocomplete for keywords and names already in the model. Look up current docs online if you need to.