Redact invalid chunk plan lookup diagnostics

internal/framework/pipeline/runner_chunk_plan_test.go

@@ -143,6 +143,43 @@ func TestRunnerChunkPlanModeMatrix(t *testing.T) {
 	}
 }
 
+func TestRunnerUsesStatusDerivedChunkPlanSummaryReasons(t *testing.T) {
+	for _, tc := range []struct {
+		name       string
+		status     ChunkPlanStatus
+		wantStatus string
+		wantReason string
+	}{
+		{name: "hit", status: ChunkPlanHit, wantStatus: "hit", wantReason: "stored chunk plan is valid"},
+		{name: "missing", status: ChunkPlanMissing, wantStatus: "missing", wantReason: "chunk plan not found"},
+		{name: "invalid", status: ChunkPlanInvalid, wantStatus: "invalid", wantReason: "stored chunk plan is invalid"},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			prepared, plan := preparedTerminalDebugPipeline(t)
+			store := &recordingChunkPlanStore{
+				record:   chunkPlanRecord(t, prepared, plan),
+				decision: ChunkPlanDecision{Status: tc.status, Reason: "SENTINEL_STORE_REASON"},
+			}
+			output, err := New().Run(context.Background(), RunInput{Prepared: prepared, RawInput: []byte("input"), ChunkCacheMode: ChunkCacheAuto, ChunkPlans: store})
+			if err != nil {
+				t.Fatal(err)
+			}
+			if output.ChunkPlan.LookupStatus != tc.wantStatus || output.ChunkPlan.LookupReason != tc.wantReason || strings.Contains(output.ChunkPlan.LookupReason, "SENTINEL_STORE_REASON") {
+				t.Fatalf("summary = %#v", output.ChunkPlan)
+			}
+		})
+	}
+
+	prepared, _ := preparedTerminalDebugPipeline(t)
+	output, err := New().Run(context.Background(), RunInput{
+		Prepared: prepared, RawInput: []byte("input"), ChunkCacheMode: ChunkCacheAuto,
+		ChunkPlans: &recordingChunkPlanStore{loadErr: errors.New("read failed")},
+	})
+	if err == nil || output.ChunkPlan == nil || output.ChunkPlan.LookupStatus != "skipped" || output.ChunkPlan.LookupReason != "chunk plan lookup skipped" {
+		t.Fatalf("operational lookup output=%#v error=%v", output.ChunkPlan, err)
+	}
+}
+
 func TestRunnerChunkPlanHitUsesStoredProducerProvenance(t *testing.T) {
 	prepared, plan := preparedTerminalDebugPipeline(t)
 	prepared.resolved.Chunk.Module = "chunk/requested"