feat(v1.1.9): dashboard Queues tab + queue:receive trigger form + 0.15.0

API client (src/lib/api.ts):
- TriggerKind gains 'queue'
- TriggerDetails gains { kind: 'queue', queue_name, visibility_timeout_secs, last_fired_at }
- CreateQueueTriggerInput, QueueSummary, QueueConsumer, QueueDetail
- api.triggers.createQueue(idOrSlug, input) -> POST /admin/.../triggers/queue
- api.queues.list(idOrSlug) -> GET /admin/.../queues
- api.queues.get(idOrSlug, name) -> GET /admin/.../queues/{name}

New routes:
- /apps/[slug]/queues — read-only list view (queue_name, total, pending,
  claimed, drilldown link); empty state explains how queues are created
  (first enqueue) and that consumers register via the Triggers tab
- /apps/[slug]/queues/[name] — drilldown showing depth + registered
  consumer (script name + visibility timeout + last_fired_at + trigger
  id); empty consumer state surfaces clearly

App detail page (src/routes/apps/[slug]/+page.svelte):
- New "Queues" link in the app-level nav between Files and Dead letters
- Triggers tab gains a "Queue:receive trigger (v1.1.9)" form alongside
  cron/pubsub/email — target script select, queue_name, visibility
  timeout (5–3600s, default 30), max_attempts (1–20, default 3)
- Trigger list renders queue triggers with queue_name + visibility
  timeout + last_fired_at

dashboard/package.json: 0.14.0 -> 0.15.0

npm run check — all queue/invoke-related code typechecks clean; the
existing Playwright test errors (149 unrelated) carry forward unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

dashboard/src/routes/apps/[slug]/+page.svelte

@@ -131,6 +131,13 @@
 	let createEmailSecret = $state('');
 	let creatingEmail = $state(false);
 	let createEmailError = $state<string | null>(null);
+	// Queue triggers (v1.1.9).
+	let createQueueScriptId = $state('');
+	let createQueueName = $state('');
+	let createQueueVisibilityTimeout = $state(30);
+	let createQueueMaxAttempts = $state(3);
+	let creatingQueue = $state(false);
+	let createQueueError = $state<string | null>(null);
 	let triggerToRemove = $state<Trigger | null>(null);
 	let removingTrigger = $state(false);
 	// Endpoint scripts only — modules can't be trigger targets.
@@ -208,6 +215,31 @@
 		}
 	}
 
+	async function submitCreateQueue(e: SubmitEvent) {
+		e.preventDefault();
+		if (!app) return;
+		creatingQueue = true;
+		createQueueError = null;
+		try {
+			await api.triggers.createQueue(app.id, {
+				script_id: createQueueScriptId,
+				queue_name: createQueueName.trim(),
+				visibility_timeout_secs: createQueueVisibilityTimeout,
+				retry_max_attempts: createQueueMaxAttempts
+			});
+			createQueueScriptId = '';
+			createQueueName = '';
+			createQueueVisibilityTimeout = 30;
+			createQueueMaxAttempts = 3;
+			await loadTriggers(app.id);
+		} catch (err) {
+			createQueueError =
+				err instanceof ApiError ? err.message : err instanceof Error ? err.message : String(err);
+		} finally {
+			creatingQueue = false;
+		}
+	}
+
 	// The inbound-email webhook URL for a given email trigger (shown so
 	// the operator can configure their provider).
 	function emailInboundUrl(triggerId: string): string {
@@ -797,6 +829,13 @@
 			>
 				Files
 			</a>
+			<a
+				class="tab-link"
+				href="{base}/apps/{slug}/queues"
+				title="Queues — depth of per-app durable queues (v1.1.9, read-only)"
+			>
+				Queues
+			</a>
 			<a
 				class="tab-link"
 				href="{base}/apps/{slug}/dead-letters"
@@ -1192,6 +1231,70 @@
 				</div>
 			</form>
 
+			<h3>Queue:receive trigger (v1.1.9)</h3>
+			<p class="muted">
+				Register a script as the consumer for a per-app durable queue. Exactly
+				one consumer per queue is allowed — the registration will be rejected
+				if another consumer already exists. Use the
+				<a href="{base}/apps/{slug}/queues">Queues</a> tab for a read-only view
+				of message depths.
+			</p>
+			<form class="create-form" onsubmit={submitCreateQueue}>
+				<div class="row">
+					<label>
+						<span>Target script</span>
+						<select bind:value={createQueueScriptId} required>
+							<option value="" disabled>Select an endpoint script…</option>
+							{#each endpointScripts as s (s.id)}
+								<option value={s.id}>{s.name}</option>
+							{/each}
+						</select>
+					</label>
+					<label class="grow">
+						<span>Queue name</span>
+						<input
+							type="text"
+							bind:value={createQueueName}
+							placeholder="payments.process"
+							required
+						/>
+					</label>
+				</div>
+				<div class="row">
+					<label>
+						<span>Visibility timeout (5–3600s)</span>
+						<input
+							type="number"
+							bind:value={createQueueVisibilityTimeout}
+							min="5"
+							max="3600"
+							required
+						/>
+					</label>
+					<label>
+						<span>Max attempts (1–20)</span>
+						<input
+							type="number"
+							bind:value={createQueueMaxAttempts}
+							min="1"
+							max="20"
+							required
+						/>
+					</label>
+				</div>
+				{#if createQueueError}
+					<div class="error">{createQueueError}</div>
+				{/if}
+				<div class="actions">
+					<button
+						type="submit"
+						disabled={creatingQueue || !createQueueScriptId || !createQueueName}
+					>
+						{creatingQueue ? 'Creating…' : 'Create queue:receive trigger'}
+					</button>
+				</div>
+			</form>
+
 			{#if triggers.length === 0}
 				<p class="muted">No triggers in this app yet.</p>
 			{:else}
@@ -1216,6 +1319,12 @@
 											{t.details.has_inbound_secret ? 'signed (HMAC)' : 'unsigned'}
 										</span>
 										<code class="webhook-url">{emailInboundUrl(t.id)}</code>
+								{:else if t.details.kind === 'queue'}
+										<code>{t.details.queue_name}</code>
+										<span class="muted">— vt {t.details.visibility_timeout_secs}s</span>
+										<span class="muted small">
+											last fired: {t.details.last_fired_at ?? 'never'}
+										</span>
 								{/if}
 								<span class="muted small">→ {t.script_id}</span>
 							</div>