Bayesian analysis

EasyReflectometryApp/Backends/Mock/Analysis.qml

@@ -34,6 +34,28 @@ QtObject {
     readonly property var fitPreviewParameterValues: ({})
     readonly property var fitResults: ({ success: true, nvarys: 3, chi2: 1.2345 })
 
+    // Bayesian sampling
+    readonly property bool isBayesianSelected: false
+    readonly property int bayesianSamples: 10000
+    readonly property int bayesianBurnIn: 2000
+    readonly property int bayesianPopulation: 10
+    readonly property int bayesianThinning: 1
+    readonly property var bayesianPosterior: null
+    readonly property bool bayesianResultAvailable: false
+    readonly property var bayesianMarginals: []
+
+    // Phase 2: corner/trace/distribution plots (HTML), diagnostics, heatmap
+    readonly property string bayesianCornerPlotUrl: ''
+    readonly property string bayesianTracePlotUrl: ''
+    readonly property string bayesianDistributionPlotUrl: ''
+    readonly property var bayesianDiagnostics: ({})
+    readonly property var bayesianParamNames: []
+    readonly property var bayesianHeatmapData: null
+    readonly property string bayesianHeatmapPlotUrl: ''
+    function bayesianComputeHeatmap(x, y) {
+        console.debug(`bayesianComputeHeatmap ${x}, ${y}`)
+    }
+
     // Fit failure signal (mirrors Python backend)
     signal fitFailed(string message)
 
@@ -123,4 +145,16 @@ QtObject {
         showFitResultsDialog = value
         console.debug(`setShowFitResultsDialog ${value}`)
     }
+    function setBayesianSamples(value) {
+        console.debug(`setBayesianSamples ${value}`)
+    }
+    function setBayesianBurnIn(value) {
+        console.debug(`setBayesianBurnIn ${value}`)
+    }
+    function setBayesianPopulation(value) {
+        console.debug(`setBayesianPopulation ${value}`)
+    }
+    function setBayesianThinning(value) {
+        console.debug(`setBayesianThinning ${value}`)
+    }
 }

EasyReflectometryApp/Backends/Mock/Plotting.qml

@@ -37,6 +37,20 @@ QtObject {
     property bool scaleShown: false
     property bool bkgShown: false
 
+    // Posterior predictive (Bayesian) overlay data
+    readonly property var posteriorPredictiveQ: []
+    readonly property var posteriorPredictiveMedian: []
+    readonly property var posteriorPredictiveLower: []
+    readonly property var posteriorPredictiveUpper: []
+    signal posteriorPredictiveDataChanged()
+
+    // Phase 2: SLD posterior predictive (Bayesian) overlay
+    readonly property var posteriorPredictiveSldZ: []
+    readonly property var posteriorPredictiveSldMedian: []
+    readonly property var posteriorPredictiveSldLower: []
+    readonly property var posteriorPredictiveSldUpper: []
+    signal posteriorPredictiveSldDataChanged()
+
     // Signals for plot mode changes
     signal plotModeChanged()
     signal axisTypeChanged()