feat(p10-reframe-w2): CPU wax-blob lava physics + 2D collision; smin metaball render

DeepDrftPublic.Client/Controls/MixWaveformVisualizer.razor.cs

@@ -58,7 +58,10 @@ public partial class MixWaveformVisualizer : ComponentBase, IAsyncDisposable
     // datum-fetch / subscription / playback-coupling seams log to the browser console (prefixed
     // `[MixVisualizer]`, same as the JS logs so the two interleave into one timeline). These pinpoint
     // which upstream link is broken when the ribbon stays blank — set false once confirmed healthy.
-    private static readonly bool Debug = false;
+    // ON for the Phase 10 reframe Wave R2 lava test (matches the JS-side DEBUG in
+    // MixVisualizer.ts). Daniel evaluates the physics in-browser; flip back to false at
+    // reframe close along with the JS flag.
+    private static readonly bool Debug = true;
     private const string Tag = "[MixVisualizer]";
 
     private static void DebugLog(string message)
@@ -188,7 +191,9 @@ public partial class MixWaveformVisualizer : ComponentBase, IAsyncDisposable
     }
 
     // The controls row mutated a slider on the shared state and raised Changed. Push all four control
-    // uniforms (cheap scalar interop; the inert three are no-ops in the parity shader until Wave 3).
+    // values (cheap scalar interop). In the Phase 10 reframe Wave R2, three of them are re-routed to
+    // the lava physics inside the JS handle (setBubblyness→gravity, setDetach→heat,
+    // setColorShiftSpeed→collision) — see MixVisualizer.ts; the bridge contract is unchanged.
     private void OnControlStateChanged() => InvokeAsync(async () =>
     {
         await PushControlsAsync();
@@ -198,8 +203,9 @@ public partial class MixWaveformVisualizer : ComponentBase, IAsyncDisposable
 
     /// <summary>
     /// Push all four control values to the module from the shared state. Used to seed on first render
-    /// and to re-push when the controls row signals a change. Resolution drives the live render; the
-    /// other three are inert in the parity shader (Wave 3 consumes them).
+    /// and to re-push when the controls row signals a change. Resolution drives the scroll/zoom; the
+    /// other three are routed to the lava physics (gravity/heat/collision) by the JS handle in
+    /// Wave R2 (see MixVisualizer.ts). The bridge contract is unchanged.
     /// </summary>
     private async Task PushControlsAsync()
     {

DeepDrftPublic.Client/Services/MixVisualizerControlState.cs

@@ -27,23 +27,32 @@ public sealed class MixVisualizerControlState
     /// </summary>
     public const double DefaultVisibleSeconds = 10.0;
 
-    /// <summary>
-    /// Default bulge amount. Mirrors <c>DEFAULT_BUBBLYNESS</c> in MixVisualizer.ts. Normalized [0,1];
-    /// 0 = straight rectangular bars, 1 = fully rounded liquid silhouettes (still attached).
-    /// </summary>
-    public const double DefaultBubblyness = 0.35;
+    // R2 TEMP (Phase 10 reframe Wave R2): the three controls below are re-routed to the new
+    // lava physics for Daniel's in-browser test — the JS handle setters map them as:
+    //   Bubblyness → lava GRAVITY, Detach → lava HEAT, ColorShiftSpeed → COLLISION STRENGTH.
+    // The defaults are bumped so the lava looks ALIVE on open (heat non-zero). Wave R4
+    // replaces this with the proper six-knob set + its own typed properties. Keep these
+    // mirrored to the DEFAULT_* anchors in MixVisualizer.ts, as the existing sync discipline.
 
     /// <summary>
-    /// Default detach amount. Mirrors <c>DEFAULT_DETACH</c> in MixVisualizer.ts. Normalized [0,1];
-    /// 0 = fully attached, 1 = blobs separate and float upward. Off by default.
+    /// Default GRAVITY dial (R2 temp; was bulge). Mirrors <c>DEFAULT_BUBBLYNESS</c> in MixVisualizer.ts.
+    /// Normalized [0,1]; 0 = near-weightless float, 1 = wax falls + settles fast.
     /// </summary>
-    public const double DefaultDetach = 0.0;
+    public const double DefaultBubblyness = 0.5;
 
     /// <summary>
-    /// Default color-shift speed. Mirrors <c>DEFAULT_COLOR_SHIFT_SPEED</c> in MixVisualizer.ts.
-    /// Normalized [0,1], mapped to a gradient-morph cycle period in the shader (slow → quick).
+    /// Default HEAT dial (R2 temp; was detach). Mirrors <c>DEFAULT_DETACH</c> in MixVisualizer.ts.
+    /// Normalized [0,1]; 0 = wax rests at the bottom (collision-only), 1 = many bubbles rising.
+    /// Non-zero default so the lamp is alive on open.
     /// </summary>
-    public const double DefaultColorShiftSpeed = 0.3;
+    public const double DefaultDetach = 0.45;
+
+    /// <summary>
+    /// Default COLLISION-STRENGTH dial (R2 temp; was color-shift). Mirrors
+    /// <c>DEFAULT_COLOR_SHIFT_SPEED</c> in MixVisualizer.ts. Normalized [0,1]; 0 = soft shove,
+    /// 1 = hard elastic wall.
+    /// </summary>
+    public const double DefaultColorShiftSpeed = 0.5;
 
     /// <summary>Visible time-span in seconds (the resolution/zoom control). Reused as-is from 8.K.</summary>
     public double VisibleSeconds { get; set; } = DefaultVisibleSeconds;