nx_galx_shell_jslint.nx

nx_galx_shell_jslint.nx -- SOVEREIGN JS syntax sanity guard for the gallery shell's inline <script>. WHY: the gallery JS broke (operator: "its not working", browser: "Uncaught SyntaxError: Invalid or unexpected token") because an HTML attribute with single quotes (href='#') was embedded inside a single-quoted JS string (lb.innerHTML='...href='#'...') -> the string terminated early and the '#' was a stray token. There is NO JS engine in this sovereign environment, so nothing caught it. This is a tiny string state-machine that catches exactly that class (premature string termination -> stray token after a string) plus unbalanced strings/ brackets. NOT a full JS parser -- a focused, no-false-positive guard for hand-written shell JS. LIMITATION (documented): regex literals are treated as division; this is balance-neutral and produces no false positive for regexes without embedded quotes (the gallery's only regex is /[<&>]/g). A regex literal containing a quote would need real regex handling -- add it the day the shell needs one. license_tier: ORIGINAL