fix: advance NEXT past unplayable cuts

tests/LegacyParityWeb/thin-client.test.cjs

@@ -116,6 +116,7 @@ test("program keeps cut append available while structural playlist edits stay lo
     playout: {
       phase: "program",
       currentCueIndexZeroBased: 0,
+      onAirCueIndexZeroBased: 0,
       isBusy: false,
       outcomeUnknown: false,
       isPlayCompletionPending: false,
@@ -211,6 +212,8 @@ test("playlist keeps candidate, selection, and pink on-air states independent",
       phase: "program",
       currentEntryId: "row-current",
       currentCueIndexZeroBased: 1,
+      onAirEntryId: "row-current",
+      onAirCueIndexZeroBased: 1,
       pageIndexZeroBased: 1,
       pageCount: 3
     }
@@ -237,6 +240,34 @@ test("playlist keeps candidate, selection, and pink on-air states independent",
   assert.equal(presentation({
     playout: { ...state.playout, currentEntryId: null }
   }, { rowId: "row-fallback", isSelected: false, pageText: "1/3" }, 1).isCurrent, true);
+
+  const failedNextState = {
+    playout: {
+      ...state.playout,
+      currentEntryId: "row-unplayable",
+      currentCueIndexZeroBased: 2,
+      onAirEntryId: "row-current",
+      onAirCueIndexZeroBased: 1
+    }
+  };
+  assert.deepEqual(presentation(failedNextState, {
+    rowId: "row-unplayable", isSelected: false, pageText: "1/1"
+  }, 2), {
+    isSelected: false,
+    isCurrent: true,
+    isOnAir: false,
+    pageText: "1/1",
+    focusKey: "program:row-unplayable:-1:0"
+  });
+  assert.deepEqual(presentation(failedNextState, {
+    rowId: "row-current", isSelected: false, pageText: "1/3"
+  }, 1), {
+    isSelected: false,
+    isCurrent: false,
+    isOnAir: true,
+    pageText: "2/3",
+    focusKey: ""
+  });
   assert.match(app, /presentation\.isOnAir \? " on-air"/);
   assert.match(app, /presentation\.isSelected \|\| isCandidate \? " selected"/);
   assert.match(app, /presentation\.pageText/);