feat: synthesize LAG/trunk interfaces and support trunk member editing

get_interfaces() now fills in ports missing from the /ports collection
(e.g. the 4th SFP uplink on a 2530-48G) using system/status/switch, and
synthesizes a logical interface for each configured LAG/trunk group with
lag_members/lag_mode. New set_lag_members() adds/removes trunk members via
the REST /cli passthrough (PUT ports/{id} silently ignores trunk_group).

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

napalm_procurve/procurve.py

@@ -796,6 +796,55 @@ class ProcurveDriver(SwitchDriver):
             self._exit_config_mode()
         self._save_config()
 
+    # ------------------------------------------------------------------
+    # LAG / trunk membership
+    # ------------------------------------------------------------------
+
+    def set_lag_members(self, lag_name: str, members: List[str]) -> None:
+        """Set the full member-port list of a LAG/trunk group.
+
+        Diffs ``members`` against the trunk's current members (as reported
+        by ``get_interfaces()``) and issues ``trunk``/``no trunk`` commands
+        for the difference. Available on both REST API and CLI transports —
+        ArubaOS-Switch only exposes trunk membership via the CLI, including
+        through the REST API's ``/cli`` passthrough endpoint (``PUT /ports``
+        does not apply ``trunk_group``/``trunk_mode`` changes).
+        """
+        current = self.get_interfaces().get(lag_name, {})
+        current_members = set(current.get("lag_members") or [])
+        desired = set(members)
+        to_remove = sorted(current_members - desired, key=lambda s: int(s) if s.isdigit() else 0)
+        to_add = sorted(desired - current_members, key=lambda s: int(s) if s.isdigit() else 0)
+
+        if not to_remove and not to_add:
+            return
+
+        mode = current.get("lag_mode") or "trunk"
+        trk_name = lag_name.lower()
+
+        commands: List[str] = []
+        if to_remove:
+            commands.append(f"no trunk {','.join(to_remove)}")
+        if to_add:
+            commands.append(f"trunk {','.join(to_add)} {trk_name} {mode}")
+
+        if self._transport == "api":
+            for cmd in ["configure terminal", *commands]:
+                resp = self._api.post("cli", json={"cmd": cmd})
+                if not resp.ok or resp.json().get("status") == "CCS_FAILURE":
+                    raise CommandErrorException(
+                        f"set_lag_members({lag_name}): '{cmd}' -> {resp.text[:200]}"
+                    )
+        else:
+            self._enter_config_mode()
+            try:
+                errors = self._apply_config_lines("\n".join(commands))
+                if errors:
+                    raise CommandErrorException(f"set_lag_members({lag_name}) errors: {errors}")
+            finally:
+                self._exit_config_mode()
+        self._save_config()
+
     def set_interface(self, interface: str, config: InterfaceConfigDict) -> None:
         """Configure a switch interface (mode, VLAN membership)."""
         if self._transport == "api":