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Stop the engine switch claiming Rust with no backend #23

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Merged
emilbob merged 1 commit into from
Jul 25, 2026
Merged

Stop the engine switch claiming Rust with no backend #23

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12 changes: 10 additions & 2 deletions web/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -135,6 +135,11 @@

/* Engine switch — only shown when a real backend answered /api/health. */
.engine { display: inline-flex; align-items: center; gap: 0.6rem; }
/* Any `display` here would override what the `hidden` attribute does, leaving
a static host showing an engine switch set to "Rust" while JavaScript is
what actually runs — the page contradicting itself about the one thing it
must not be wrong about. */
.engine[hidden] { display: none; }
.seg { display: inline-flex; border: 1px solid var(--rule-strong); border-radius: 2px; overflow: hidden; }
.seg button {
font-family: var(--mono); font-size: var(--step--1); font-weight: 600;
Expand Down Expand Up @@ -273,9 +278,12 @@ <h1>substrate-node-probe</h1>
<button type="button" class="ghost" id="stop" disabled>Stop</button>
<span class="engine" id="engine" hidden>
<span class="label">Engine</span>
<!-- JavaScript is marked active in the markup because that is what runs
before anything answers /api/health. The switch flips to Rust only
once a backend has actually confirmed it is there. -->
<span class="seg">
<button type="button" data-engine="server" class="on">Rust</button>
<button type="button" data-engine="browser">JavaScript</button>
<button type="button" data-engine="server">Rust</button>
<button type="button" data-engine="browser" class="on">JavaScript</button>
</span>
</span>
<span class="elapsed" id="elapsed"></span>
Expand Down
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