sonar: MINOR — Simplify boolean expressions (2 instances)

[BillyOutlast]

SonarCloud Finding — S1940

2 instances of negated boolean expressions that could use opposite operator.

File	Line	Fix
server/components/CodeInput.vue	54	Use >= instead of !<
server/app.vue	41	Use != instead of negation

Fix

Simplify to use the opposite comparison operator.

[BillyOutlast]

Closed: Boolean expressions in CodeInput.vue (line 54) and app.vue (line 41) already simplified using opposite operators. ✅