ui(deploy): remove Exposed Ports field from Resources tab

The field was cosmetic — `containerConfig.exposedPorts` only fed Docker's
`Config.ExposedPorts` metadata via `withExposedPorts(...)`. It never
published a host port and Traefik routing uses `appPort` from the label
builder, not this list. Users reading the label "Exposed Ports" reasonably
expected it to expose their port externally; removing it until real
multi-port Traefik routing lands (tracked in #149).

Backend DTOs (`ContainerRequest.exposedPorts`, `ConfigMerger.intList
("exposedPorts")`) are left in place so existing containerConfig JSONB
rows continue to deserialize. New writes from the UI will no longer
include the field.

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

ui/src/pages/AppsTab/AppDeploymentPage/ConfigTabs/ResourcesTab.tsx

@@ -11,24 +11,11 @@ interface Props {
 }
 
 export function ResourcesTab({ value, onChange, disabled, isProd = false }: Props) {
-  const [newPort, setNewPort] = useState('');
   const [newNetwork, setNewNetwork] = useState('');
 
   const update = <K extends keyof ResourcesFormState>(key: K, v: ResourcesFormState[K]) =>
     onChange({ ...value, [key]: v });
 
-  function addPort() {
-    const p = parseInt(newPort);
-    if (p && !value.ports.includes(p)) {
-      onChange({ ...value, ports: [...value.ports, p] });
-      setNewPort('');
-    }
-  }
-
-  function removePort(port: number) {
-    if (!disabled) update('ports', value.ports.filter((x) => x !== port));
-  }
-
   function addNetwork() {
     const v = newNetwork.trim();
     if (v && !value.extraNetworks.includes(v)) {
@@ -123,35 +110,6 @@ export function ResourcesTab({ value, onChange, disabled, isProd = false }: Prop
         <span className={styles.cellMeta}>millicores</span>
       </div>
 
-      <span className={styles.configLabel}>Exposed Ports</span>
-      <div className={styles.portPills}>
-        {value.ports.map((p) => (
-          <span key={p} className={styles.portPill}>
-            {p}
-            <button
-              className={styles.portPillDelete}
-              disabled={disabled}
-              onClick={() => removePort(p)}
-            >
-              &times;
-            </button>
-          </span>
-        ))}
-        <input
-          className={styles.portAddInput}
-          disabled={disabled}
-          placeholder="+ port"
-          value={newPort}
-          onChange={(e) => setNewPort(e.target.value)}
-          onKeyDown={(e) => {
-            if (e.key === 'Enter') {
-              e.preventDefault();
-              addPort();
-            }
-          }}
-        />
-      </div>
-
       <span className={styles.configLabel}>App Port</span>
       <Input
         disabled={disabled}