feat(web): implement Ship Dashboard with vitals and mobility sections

Adds NumericStepper and EnumDropdown UI components, VitalsSection (hull/armor/AC/con),
MobilitySection (speed/maneuver class/size), with debounced real-time updates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/components/dashboard/VitalsSection.tsx

@@ -0,0 +1,51 @@
+import NumericStepper from '../ui/NumericStepper';
+import type { Ship } from '../../types/ship';
+
+interface Props {
+  ship: Ship;
+  onUpdate: (patch: Partial<Ship>) => void;
+}
+
+export default function VitalsSection({ ship, onUpdate }: Props) {
+  return (
+    <section className="dashboard-section">
+      <h3 className="section-title">Vitals</h3>
+      <div className="stat-grid">
+        <NumericStepper
+          label="Hull"
+          value={ship.hull_current}
+          max={ship.hull_max}
+          onChange={(v) => onUpdate({ hull_current: v })}
+        />
+        <NumericStepper
+          label="Hull Max"
+          value={ship.hull_max}
+          min={ship.hull_current}
+          onChange={(v) => onUpdate({ hull_max: v })}
+        />
+        <NumericStepper
+          label="Armor"
+          value={ship.armor_current}
+          max={ship.armor_max}
+          onChange={(v) => onUpdate({ armor_current: v })}
+        />
+        <NumericStepper
+          label="Armor Max"
+          value={ship.armor_max}
+          min={ship.armor_current}
+          onChange={(v) => onUpdate({ armor_max: v })}
+        />
+        <NumericStepper
+          label="AC"
+          value={ship.ac}
+          onChange={(v) => onUpdate({ ac: v })}
+        />
+        <NumericStepper
+          label="Con Save"
+          value={ship.con_save ?? 0}
+          onChange={(v) => onUpdate({ con_save: v })}
+        />
+      </div>
+    </section>
+  );
+}