Pool Plutonium keys by game for launches and autoscaling

src/lib/ui/components/DeployServerDialog.svelte

@@ -97,7 +97,7 @@
             const body = await res.json();
             if (!res.ok) throw new Error(body.error ?? 'Could not prepare launch preview.');
             if (current === session) {
-                if (previousName && previousName !== body.name) { plutoKey = ''; keyNotice = 'The available server ID changed. Enter the key for the new ID below; the previous key was not transferred.'; }
+                if (previousName && previousName !== body.name) keyNotice = 'The available lobby changed. Any entered key can still be used for this game.';
                 if (body.hasSavedKey) plutoKey = '';
                 preview = body; now = Date.now();
                 await tick(); heading?.focus();
@@ -148,18 +148,18 @@
             {#if error}<Button onclick={initialize}>Try again</Button>{/if}
         {:else if preview}
             {#if keyNotice}<p role="status" class="muted">{keyNotice}</p>{/if}
-            {#if expired}<p class="error" role="status">This preview expired. Refresh it to recheck capacity. Keys stay entered when the server ID is unchanged.</p>{/if}
+            {#if expired}<p class="error" role="status">This preview expired. Refresh it to recheck capacity. Entered keys stay with this game when you refresh.</p>{/if}
             <section class="recipe-panel"><LaunchRecipe recipe={preview.recipe} />{#if preview.blueprintName}<p class="muted">From collection: {preview.blueprintName}</p>{/if}</section>
             <section class="preflight"><div class="section-title"><h3>Before you launch</h3><button class="text-button" disabled={busy || saving} onclick={review}>Refresh preview</button></div>
                 <ul>{#each preview.checks as check}<li class:blocked={check.state === 'blocked'}><span class="check" aria-label={check.state}>{check.state === 'pass' ? '✓' : check.state === 'blocked' ? '!' : 'i'}</span><div><strong>{check.label}</strong><p>{check.detail}</p></div></li>{/each}</ul>
             </section>
             <form onsubmit={event => { event.preventDefault(); void launch(); }}>
-                <div class="identity"><span class="eyebrow">Your new server</span><strong>{preview.name ?? 'Waiting for an available lobby'}</strong><p>Fresh identity, with its own server key.</p></div>
-                {#if preview.hasSavedKey}<p class="key-ready"><span aria-hidden="true">✓</span> Saved key ready</p>
-                {:else}<label>Plutonium server key<input type="password" bind:value={plutoKey} disabled={busy || saving || !preview.name} maxlength="512" autocomplete="off" placeholder="Paste the key for this server ID" /></label>{/if}
-                <p class="muted">{preview.hasSavedKey ? 'The saved key for this server ID will be reused automatically. Electric Cherry does not check whether Plutonium accepts it. Update it in Keys.' : 'Add the key here. It is saved for this exact server ID when you launch, including if provisioning fails.'} <a href={`/server-keys?server=${encodeURIComponent(preview.name ?? '')}`} target="_blank" rel="noopener">Manage saved keys in a new tab</a>; your launch stays open here.</p>
+                <div class="identity"><span class="eyebrow">Your new server</span><strong>{preview.name ?? 'Waiting for an available lobby'}</strong><p>An available key from this game’s pool is assigned when you launch.</p></div>
+                {#if preview.hasSavedKey}<p class="key-ready"><span aria-hidden="true">✓</span> Game key available</p>
+                {:else}<label>Plutonium server key<input type="password" bind:value={plutoKey} disabled={busy || saving || !preview.name} maxlength="512" autocomplete="off" placeholder="Paste an unused key for this game" /></label>{/if}
+                <p class="muted">{preview.hasSavedKey ? 'An unused key from this game’s pool will be assigned automatically. Availability is checked again at launch.' : 'Add an unused key for this game. Launch saves it in the game pool and assigns it to this server until removal is confirmed.'} <a href={`/server-keys?game=${preview.recipe.game}`} target="_blank" rel="noopener">Manage saved keys in a new tab</a>; your launch stays open here.</p>
                 <div class="launch-actions"><Button variant="ghost" disabled={busy || saving} onclick={() => { preview = null; plutoKey = ''; error = ''; }}>Back</Button><Button type="submit" variant="primary" loading={busy} disabled={busy || saving || expired || !hostReady || !preview.ready || (!preview.hasSavedKey && !plutoKey.trim())}>Launch server</Button></div>
-                {#if !preview.hasSavedKey && !plutoKey.trim()}<p class="muted">Enter this server’s key to enable launch.</p>{/if}
+                {#if !preview.hasSavedKey && !plutoKey.trim()}<p class="muted">Enter an unused key for this game to enable launch.</p>{/if}
                 <p class="caption">Preview valid until {$timeFormat.minuteTime(preview.expiresAt)}. Capacity is checked again at launch. The host and port are assigned automatically.</p>
             </form>
             <details class="save"><summary>Make this a reusable collection</summary><p class="muted">Save this game and map with a target of one lobby. Future launches use the latest promoted setup and create only missing lobbies.</p>