build(rechner): exact expression engine, keypad, scientific panel, history, memory; README

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
2026-10-17 16:02:11 +02:00
co-authored by Claude Opus 5.5
parent 7ef64324fb
commit 5027fbcd85
40 changed files with 1899 additions and 30 deletions
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