feat(alerts): always-visible dismiss/ack actions + Dismiss all (service, endpoint, UI)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/integration/alerts-dismiss-all.test.ts

@@ -0,0 +1,70 @@
+/**
+ * Bulk-dismiss service: dismissAllForPort must respect the optional rule/
+ * severity filter and never touch another port's alerts.
+ */
+
+import { describe, it, expect, beforeAll, vi } from 'vitest';
+import { and, eq, isNull } from 'drizzle-orm';
+
+vi.mock('@/lib/socket/server', () => ({
+  emitToRoom: vi.fn(),
+}));
+
+import { db } from '@/lib/db';
+import { alerts } from '@/lib/db/schema/insights';
+import { user } from '@/lib/db/schema/users';
+import { dismissAllForPort } from '@/lib/services/alerts.service';
+import { makePort } from '../helpers/factories';
+
+let USER_ID = '';
+
+beforeAll(async () => {
+  const [u] = await db.select({ id: user.id }).from(user).limit(1);
+  if (!u) throw new Error('No user available; run pnpm db:seed first');
+  USER_ID = u.id;
+});
+
+async function seedAlert(portId: string, ruleId: string, severity = 'info') {
+  const [row] = await db
+    .insert(alerts)
+    .values({
+      portId,
+      ruleId,
+      severity,
+      title: `t-${ruleId}`,
+      link: '/x',
+      fingerprint: `fp-${Math.random().toString(36).slice(2)}`,
+      metadata: {},
+    })
+    .returning({ id: alerts.id });
+  return row!.id;
+}
+
+async function openCount(portId: string) {
+  const rows = await db
+    .select()
+    .from(alerts)
+    .where(and(eq(alerts.portId, portId), isNull(alerts.dismissedAt), isNull(alerts.resolvedAt)));
+  return rows.length;
+}
+
+describe('dismissAllForPort', () => {
+  it('dismisses only the filtered rule, scoped to the port, then all', async () => {
+    const portA = await makePort();
+    const portB = await makePort();
+    await seedAlert(portA.id, 'interest.stale');
+    await seedAlert(portA.id, 'interest.stale');
+    await seedAlert(portA.id, 'document.signer_overdue', 'warning');
+    await seedAlert(portB.id, 'interest.stale');
+
+    const filtered = await dismissAllForPort(portA.id, USER_ID, { ruleId: 'interest.stale' });
+    expect(filtered).toBe(2);
+    expect(await openCount(portA.id)).toBe(1); // signer_overdue remains
+    expect(await openCount(portB.id)).toBe(1); // other port untouched
+
+    const rest = await dismissAllForPort(portA.id, USER_ID);
+    expect(rest).toBe(1);
+    expect(await openCount(portA.id)).toBe(0);
+    expect(await openCount(portB.id)).toBe(1);
+  });
+});