Avoid probing UUID file-transfer namespaces

custom_components/localthings/registry/subdevices.py

@@ -416,8 +416,12 @@ def enumerate_subdevices(
     # /subdevices/vs/0 and /device/<n> 404s; the only trace of the sibling
     # is a UUID-prefixed link in /oic/res (the x.com.samsung.da.multidevice
     # link). Its own tree answers a full Collection at /<uuid>/device/0,
-    # exactly Pattern B's transform, so every UUID path prefix seen in
-    # /oic/res is treated as a candidate. _probe_prefixed's probed_ids
+    # exactly Pattern B's transform, so a UUID prefix attached to that
+    # resource type is treated as a candidate. Other UUID-prefixed links are
+    # not evidence of a sibling: some single-unit AC boards advertise only
+    # per-prefix file-transfer resources, and probing those prefixes against
+    # every master href needlessly burns the setup timeout budget.
+    # _probe_prefixed's probed_ids
     # guard (not a set difference against `listed`) is what keeps an id
     # already named by subdeviceIdList from being probed twice, since the
     # two sources can disagree on case.
@@ -426,7 +430,7 @@ def enumerate_subdevices(
             m.group(1)
             for link in _iter_oic_res_hrefs(oic_res_links)
             for m in [_UUID_PREFIX_RE.match(link.get("href", ""))]
-            if m
+            if m and "x.com.samsung.da.multidevice" in (link.get("rt") or ())
         }
     )
     for sub_id in linked:

tests/test_laundry_capabilities.py

@@ -226,6 +226,37 @@ class TestCourseCodesFromSupportedOptions:
             "8F",
         ]
 
+    def test_decodes_reported_dishwasher_course_table_without_editcourse(self):
+        """Real DA_DW_A51_20_COMMON diagnostics: the board has no
+        /wm/editcourse/vs/0, so every selectable code must come from its
+        packed supportedOptions table, including the newer 82/8A/A7/A8/8C
+        family that previously appeared as raw UI text.
+        """
+        resources = {
+            "/course/vs/0": {
+                "x.com.samsung.da.options": ["Course_82"],
+                "x.com.samsung.da.supportedOptions": [
+                    "482E0026002F00270028AE0026002F0027002A7E0026002F00270028"
+                    "0E0006000F0027000A8E0026002F002700288E0006000F00070008C"
+                    "E0026002F00270028DE0026002F00270028EE0006000F00270028FE"
+                    "0006002F0027002"
+                ],
+            },
+        }
+
+        assert laundry.cycle_options(resources) == [
+            "82",
+            "8A",
+            "A7",
+            "80",
+            "A8",
+            "88",
+            "8C",
+            "8D",
+            "8E",
+            "8F",
+        ]
+
 
 class TestCycleSelect:
     def test_builds_labelled_cycle_select(self):

tests/test_subdevices.py

@@ -625,7 +625,10 @@ def test_enumerate_prefixed_id_named_by_both_subdevice_id_list_and_oic_res_is_no
         {
             "di": "a",
             "links": [
-                {"href": f"/{_UUID}/multidevice/vs/0"},
+                {
+                    "href": f"/{_UUID}/multidevice/vs/0",
+                    "rt": ["x.com.samsung.da.multidevice"],
+                },
             ],
         }
     ]
@@ -650,7 +653,10 @@ def test_enumerate_prefixed_id_case_mismatch_between_sources_is_not_duplicated()
         {
             "di": "a",
             "links": [
-                {"href": f"/{_UUID}/multidevice/vs/0"},
+                {
+                    "href": f"/{_UUID}/multidevice/vs/0",
+                    "rt": ["x.com.samsung.da.multidevice"],
+                },
             ],
         }
     ]
@@ -666,6 +672,39 @@ def test_enumerate_prefixed_id_case_mismatch_between_sources_is_not_duplicated()
     assert subdevices[0].key.lower() == _UUID
 
 
+def test_uuid_prefixed_file_links_do_not_trigger_flat_subdevice_probe():
+    """A single-unit AC can advertise UUID-prefixed file-transfer links.
+
+    They identify a transfer namespace, not a sibling indoor unit. Treating
+    the prefix as Pattern C makes setup probe every master href under a UUID
+    that never answers, consuming the whole enumeration timeout budget.
+    """
+    oic_res = [
+        {
+            "di": "a",
+            "links": [
+                {
+                    "href": f"/{_UUID}/file/transfer/vs/0",
+                    "rt": ["x.com.samsung.file.transfer"],
+                },
+                {
+                    "href": f"/{_UUID}/file/list/vs/0",
+                    "rt": ["x.com.samsung.file.list"],
+                },
+            ],
+        }
+    ]
+    sess = _FakeSession({})
+    probes: dict[str, bool] = {}
+
+    subdevices, _extra = enumerate_subdevices(
+        sess, {}, oic_res, probe_log=probes.__setitem__
+    )
+
+    assert subdevices == []
+    assert not any(href.startswith(f"/{_UUID}/") for href in probes)
+
+
 # ---------------------------------------------------------------------------
 # discover_partitioned
 # ---------------------------------------------------------------------------