feat(manifold): improve output controls and particle input

MAP.md

@@ -47,7 +47,8 @@ anchor + locked decisions) and the `docs/specs/*-spec.md` set.
 - `manifold/src/primitives/` — the 7 design primitives as typed React (Badge, Button, PillToggle, Slider, Switch, VirtualJoystick, XYPad). Five unused ones were deleted in the 2026-07 sweep (L22).
 - `manifold/src/console/` — the convertible Console: `ConsoleApp`, `CompositeStage` (single-divider convertible
   with snap/magnetism/minimap-demotion), `OutputStage`/`SandwichStage`/`ParticleStage`/`Manifold` (canvas,
-  rect↔circular + feedback markers; ParticleStage has interactive cursor-labelled heatmap sliders), `Dock` (top Mode selector + 5 vertically-centred drawers), `Drawers`
+  rect↔circular + feedback markers; ParticleStage has interactive cursor-labelled heatmap sliders, an adjustable
+  joystick, and double-click whole-screen follow-mouse input), `Dock` (top Mode selector + 5 vertically-centred drawers), `Drawers`
   (Learning/Inputs/Outputs/Settings/Help; Learning includes the live model-architecture inspector and
   expanded Outputs owns the remaining scroll height), `TrainingHealth` (real per-iteration loss curve from
   `nisps_ml_loss_history` + per-layer weight health from `nisps_ml_get_layer_stats`; rendered only at
@@ -60,7 +61,7 @@ anchor + locked decisions) and the `docs/specs/*-spec.md` set.
   Switching mode reshapes the WASM net to the mode's `ml` dims (ConsoleApp P5.3; boot mode paf_synth →
   4→[10,10,14]→33).
 - `manifold/src/dock/` — `OutputControlRow` (editable names, corner delete, cycling off/fixed/live status, mute + solo/arm + min/max/curve, plus MIDI card fields), `output-state.ts`,
-  `OutputsBackendConfig.tsx` (per-backend specialised Outputs panel — the sole per-backend editor; the centered add-card control lives below the rows).
+  `OutputsBackendConfig.tsx` (per-backend specialised Outputs panel — the sole per-backend editor; centered prepend/append add-card controls live above and below the rows).
 - `manifold/src/backends/` — `OutputBackend` adapter + `BackendManager` (spine consumer); `midi-backend.ts`
   (WebMIDI), `osc-backend.ts`+`osc-client.ts` (OSC-over-WS), `vcv-backend.ts` (VCV-over-WS), `cv-backend.ts`
   (`UseqCvBackend` — uSEQ CV/gate over USB Web Serial, backend id `cvgate`) + `useq-protocol.ts` (v2 wire

manifold/ONBOARDING.md

@@ -109,7 +109,7 @@ Manifold ships a single "composite" altitude. Selection is now a plain three-way
 |---|---|---|---|
 | CompositeStage | `CompositeStage.tsx` | **default / hero** | Draggable split-ratio; magnet-snaps to 0.14/0.33/0.5/0.66/0.86; collapses a side to a corner minimap at extremes. |
 | SandwichStage | `SandwichStage.tsx` | `sandwich===true` (wins over the others) | Three-pane layout: `Manifold` input surface left, 3D parameter-landscape centre (input → MLP heatmap grid → outputs, drag to orbit), compact `OutputStage` right. |
-| ParticleStage | `ParticleStage.tsx` | `outputMode==='particles'` | Flow-field visualiser (`flow-field.ts`, 400-particle Canvas2D port) + interactive output heatmap sliders with cursor tooltips + corner joystick. |
+| ParticleStage | `ParticleStage.tsx` | `outputMode==='particles'` | Flow-field visualiser (`flow-field.ts`, 400-particle Canvas2D port) + interactive output heatmap sliders with cursor tooltips + a larger, explicitly adjustable/repositionable joystick; double-click anywhere in the stage enters whole-screen follow-mouse mode. |
 
 `Manifold.tsx` and `OutputStage.tsx` are no longer top-level stages — they are panes composed by
 CompositeStage/SandwichStage. `Manifold.tsx` is the full-bleed 2D input surface (canvas trail + pins
@@ -157,8 +157,9 @@ for the narrow pane.
     surface there rather than inventing one. The panel renders "no training run yet" when the
     core has no history; it never synthesises a curve.
   - **inputs** — enable/configure input sources (XY pad / MIDI / gamepad).
-  - **route** (label "Outputs") — per-output control matrix + per-backend config; at expanded depth
-    the output rows fill the remaining drawer height and scroll independently.
+  - **route** (label "Outputs") — per-output control matrix + per-backend config; centered prepend/append `+`
+    controls are available in both condensed and expanded views, and at expanded depth the output rows fill the
+    remaining drawer height and scroll independently. The orange drawer tab uses `<` to expand and `>` to condense.
   - **settings** — icon style (monochrome/colour), input-map shape (xy/joystick/rect/circular), corner radius.
   - **help** — keymap pills + loop explanation.
 - `src/dock/` holds the output-routing internals used by the `route` drawer:
@@ -168,7 +169,8 @@ for the narrow pane.
   - `OutputControlRow.tsx` — one output card: editable name · M(mute) · S(solo/arm) · cycling
     off/fixed/live status · dual-range · live value; the curve pad is a right-hand column and MIDI mode
     adds CC#/channel fields. The delete `×` sits on the upper-right corner. **Writes eagerly to the shared
-    `MFParam` store via `onChange`.** The centered `+` control follows the last visible card.
+    `MFParam` store via `onChange`.** The Outputs drawer has centered `+` controls that prepend before the first
+    visible card or append after the last.
   - `OutputsBackendConfig.tsx` — preset bar (save/restore/rename/delete) + transport/device config (MIDI
     port/templates, OSC path/range, VCV polarity); MIDI per-output fields live on `OutputControlRow`.
 

manifold/src/console/ConsoleApp.tsx

@@ -737,13 +737,11 @@ export function ConsoleApp() {
     setOutputCounts((counts) => ({ ...counts, [outputMode]: activeCards.length }));
   };
 
-  const addOutput = () => {
+  const addOutput = (placement: 'prepend' | 'append' = 'append') => {
     const active = params.slice(0, displayOutputCount);
     const next = params[displayOutputCount] ?? createOutputParam(params.length);
-    const spares = params
-      .slice(displayOutputCount + (params[displayOutputCount] ? 1 : 0))
-      .filter((param) => param.id !== next.id);
-    applyOutputCards([...active, next], spares);
+    const spares = params.filter((param) => param.id !== next.id && !active.some((p) => p.id === param.id));
+    applyOutputCards(placement === 'prepend' ? [next, ...active] : [...active, next], spares);
   };
 
   const deleteOutput = (index: number) => {

manifold/src/console/Dock.tsx

@@ -31,7 +31,6 @@ import {
   EditorIcon,
   SandwichIcon,
   CloseIcon,
-  ExpandIcon,
   GLYPH_FALLBACK,
 } from './icons';
 import type { IconProps } from './icons';
@@ -309,14 +308,14 @@ export function Dock({ ctx, active, setActive, depth, setDepth, sandwich, setSan
               top: '50%',
               transform: 'translateY(-50%)',
               width: 22,
-              height: 56,
+              height: 40,
               borderRadius: 'var(--r-2) 0 0 var(--r-2)',
               border: '1px solid var(--glass-line)',
               borderRight: 'none',
               background: 'var(--glass)',
               backdropFilter: 'blur(14px)',
               WebkitBackdropFilter: 'blur(14px)',
-              color: 'var(--fg-mute)',
+              color: 'var(--accent)',
               cursor: 'pointer',
               display: 'flex',
               alignItems: 'center',
@@ -324,7 +323,9 @@ export function Dock({ ctx, active, setActive, depth, setDepth, sandwich, setSan
               zIndex: 1,
             }}
           >
-            <ExpandIcon size={12} />
+            <span aria-hidden="true" style={{ fontSize: 22, lineHeight: 1, fontFamily: 'var(--font-mono)' }}>
+              {expanded ? '>' : '<'}
+            </span>
           </button>
           {/* Inner scroll wrapper — holds header + content, scrolls independently. */}
           <div

manifold/src/console/Drawers.tsx

@@ -747,6 +747,30 @@ function RoutingDrawer(ctx: ConsoleCtx, depth: DrawerDepth) {
 
   const expanded = depth === 'expanded';
   const rows = expanded ? activeParams : activeParams.slice(0, 6);
+  const addButton = (placement: 'prepend' | 'append') => (
+    <button
+      type="button"
+      aria-label={placement === 'append' ? '+ output' : '+ output (prepend)'}
+      title={placement === 'append' ? 'Add parameter after the last card' : 'Add parameter before the first card'}
+      onClick={() => ctx.addOutput(placement)}
+      style={{
+        alignSelf: 'center',
+        width: 30,
+        height: 26,
+        margin: '4px 0 2px',
+        border: '1px solid var(--line)',
+        borderRadius: 'var(--r-1)',
+        background: 'var(--bg-2)',
+        color: 'var(--accent)',
+        cursor: 'pointer',
+        fontFamily: 'var(--font-mono)',
+        fontSize: 18,
+        lineHeight: 1,
+      }}
+    >
+      +
+    </button>
+  );
   return (
     <>
       <div style={{ display: 'flex', gap: 6, flexWrap: 'wrap', alignItems: 'center' }}>
@@ -774,6 +798,7 @@ function RoutingDrawer(ctx: ConsoleCtx, depth: DrawerDepth) {
           overflow: 'auto',
         }}
       >
+        {addButton('prepend')}
         {rows.map((p) => {
           const i = ctx.params.indexOf(p);
           const labelled = { ...p, name: nameFor(p) };
@@ -789,28 +814,7 @@ function RoutingDrawer(ctx: ConsoleCtx, depth: DrawerDepth) {
             />
           );
         })}
-        <button
-          type="button"
-          aria-label="+ output"
-          title="Add parameter"
-          onClick={ctx.addOutput}
-          style={{
-            alignSelf: 'center',
-            width: 30,
-            height: 26,
-            margin: '4px 0 2px',
-            border: '1px solid var(--line)',
-            borderRadius: 'var(--r-1)',
-            background: 'var(--bg-2)',
-            color: 'var(--accent)',
-            cursor: 'pointer',
-            fontFamily: 'var(--font-mono)',
-            fontSize: 18,
-            lineHeight: 1,
-          }}
-        >
-          +
-        </button>
+        {addButton('append')}
       </div>
       {!expanded && activeParams.length > 6 && (
         <span style={{ fontSize: 9, color: 'var(--fg-dim)' }}>+{activeParams.length - 6} more — expand to edit</span>

manifold/src/console/ParticleStage.tsx

@@ -9,8 +9,9 @@
  *     value — the same `.heatmap-strip` the a-immersive app shows above the
  *     flow field (NOT the Boldness/Memory/Precision macro axes, which the
  *     deployed a-immersive never used);
- *   • a small circular pad in the bottom-left corner that drives the 2D input
- *     (engine.setInput) — the "joystick" of the immersive app.
+ *   • a large circular pad that drives the 2D input (engine.setInput) — the
+ *     "joystick" of the immersive app; its explicit edit handles reposition
+ *     and resize it without making normal input gestures destructive.
  *
  * The canvas animates on its own rAF clock so particles keep flowing between
  * inferences; only the *field* parameters change when the MLP outputs do. The
@@ -18,7 +19,7 @@
  * churn React state every frame.
  */
 import { useEffect, useRef, useState } from 'react';
-import type { PointerEvent as ReactPointerEvent } from 'react';
+import type { MouseEvent as ReactMouseEvent, PointerEvent as ReactPointerEvent } from 'react';
 import { useEngine } from '../engine';
 import { VirtualJoystick } from '../primitives/VirtualJoystick';
 import type { MFParam } from './model';
@@ -49,6 +50,22 @@ export function ParticleStage({ pos, onMove, params, values, onChange }: Particl
   const [hover, setHover] = useState<number | null>(null);
   const [tooltipPos, setTooltipPos] = useState({ x: 12, y: 28 });
   const [clampMarker, setClampMarker] = useState<{ i: number; value: number } | null>(null);
+  const [followMouse, setFollowMouse] = useState(false);
+  const onMoveRef = useRef(onMove);
+  const [padSize, setPadSize] = useState(200);
+  const [padPosition, setPadPosition] = useState(() => ({
+    left: 24,
+    top: typeof window === 'undefined' ? 24 : Math.max(24, window.innerHeight - 224),
+  }));
+  const [padEdit, setPadEdit] = useState(false);
+  const padGesture = useRef<{
+    kind: 'move' | 'resize';
+    startX: number;
+    startY: number;
+    left: number;
+    top: number;
+    size: number;
+  } | null>(null);
   const clampTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
   const drag = useRef<{ i: number; moved: boolean; startX: number; el: HTMLDivElement | null }>({
     i: -1,
@@ -57,6 +74,49 @@ export function ParticleStage({ pos, onMove, params, values, onChange }: Particl
     el: null,
   });
   valuesRef.current = values;
+  onMoveRef.current = onMove;
+
+  const clamp = (n: number, lo: number, hi: number) => Math.max(lo, Math.min(hi, n));
+
+  const beginPadGesture = (e: ReactPointerEvent<HTMLElement>, kind: 'move' | 'resize') => {
+    e.preventDefault();
+    e.stopPropagation();
+    e.currentTarget.setPointerCapture?.(e.pointerId);
+    padGesture.current = {
+      kind,
+      startX: e.clientX,
+      startY: e.clientY,
+      left: padPosition.left,
+      top: padPosition.top,
+      size: padSize,
+    };
+  };
+
+  const movePadGesture = (e: ReactPointerEvent<HTMLElement>) => {
+    const gesture = padGesture.current;
+    if (!gesture) return;
+    e.preventDefault();
+    e.stopPropagation();
+    if (gesture.kind === 'move') {
+      setPadPosition({
+        left: clamp(gesture.left + e.clientX - gesture.startX, 8, Math.max(8, window.innerWidth - padSize - 56)),
+        top: clamp(gesture.top + e.clientY - gesture.startY, 8, Math.max(8, window.innerHeight - padSize - 8)),
+      });
+    } else {
+      const maxSize = Math.max(140, Math.min(window.innerWidth - gesture.left - 56, window.innerHeight - gesture.top - 8, 360));
+      setPadSize(clamp(gesture.size + e.clientX - gesture.startX, 140, maxSize));
+    }
+  };
+
+  const endPadGesture = (e: ReactPointerEvent<HTMLElement>) => {
+    e.stopPropagation();
+    padGesture.current = null;
+  };
+
+  const toggleFollowMouse = (e?: ReactMouseEvent<HTMLDivElement>) => {
+    e?.preventDefault();
+    setFollowMouse((active) => !active);
+  };
 
   const updateHover = (i: number, e: ReactPointerEvent<HTMLDivElement>) => {
     hoverRef.current = i;
@@ -168,8 +228,35 @@ export function ParticleStage({ pos, onMove, params, values, onChange }: Particl
     };
   }, []);
 
+  useEffect(() => {
+    if (!followMouse) return;
+    const onWinMove = (e: PointerEvent) => {
+      const w = window.innerWidth || 1;
+      const h = window.innerHeight || 1;
+      onMoveRef.current(clamp(e.clientX / w, 0, 1), clamp(1 - e.clientY / h, 0, 1));
+    };
+    const onWinKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setFollowMouse(false);
+    };
+    window.addEventListener('pointermove', onWinMove);
+    window.addEventListener('keydown', onWinKey);
+    return () => {
+      window.removeEventListener('pointermove', onWinMove);
+      window.removeEventListener('keydown', onWinKey);
+    };
+  }, [followMouse]);
+
   return (
-    <div style={{ position: 'absolute', inset: 0, overflow: 'hidden', background: '#0d0d0d' }}>
+    <div
+      onDoubleClick={toggleFollowMouse}
+      style={{
+        position: 'absolute',
+        inset: 0,
+        overflow: 'hidden',
+        background: '#0d0d0d',
+        cursor: followMouse ? 'none' : 'default',
+      }}
+    >
       {/* Main view — the flow-field particle system */}
       <canvas
         ref={canvasRef}
@@ -227,7 +314,7 @@ export function ParticleStage({ pos, onMove, params, values, onChange }: Particl
                 height: 16,
                 background: 'rgba(255,255,255,0.04)',
                 overflow: 'hidden',
-                cursor: 'ew-resize',
+                cursor: followMouse ? 'none' : 'ew-resize',
                 touchAction: 'none',
               }}
             >
@@ -285,9 +372,136 @@ export function ParticleStage({ pos, onMove, params, values, onChange }: Particl
         }}
       />
 
-      {/* Bottom-left circular pad — drives the 2D input */}
-      <div style={{ position: 'absolute', left: 18, bottom: 18, zIndex: 20 }}>
-        <VirtualJoystick size={120} position={pos} onMove={onMove} ariaLabel="particle input pad" />
+      {followMouse && (
+        <div
+          style={{
+            position: 'absolute',
+            top: 30,
+            left: '50%',
+            transform: 'translateX(-50%)',
+            zIndex: 26,
+            padding: '4px 10px',
+            border: '1px solid var(--accent)',
+            borderRadius: 'var(--r-pill)',
+            background: 'rgba(0,0,0,0.78)',
+            color: 'var(--accent)',
+            fontFamily: 'var(--font-mono)',
+            fontSize: 10,
+            pointerEvents: 'none',
+          }}
+        >
+          FOLLOW MOUSE · ESC OR DOUBLE-CLICK TO EXIT
+        </div>
+      )}
+
+      {/* Adjustable circular pad — explicit edit handles keep repositioning/resizing deliberate. */}
+      <div
+        style={{
+          position: 'absolute',
+          left: padPosition.left,
+          top: padPosition.top,
+          width: padSize,
+          height: padSize,
+          zIndex: 20,
+          pointerEvents: 'none',
+        }}
+      >
+        <VirtualJoystick
+          size={padSize}
+          position={pos}
+          onMove={onMove}
+          disabled={padEdit || followMouse}
+          ariaLabel="particle input pad"
+          style={{ pointerEvents: padEdit || followMouse ? 'none' : 'auto' }}
+        />
+        <button
+          type="button"
+          aria-label={padEdit ? 'Finish adjusting joystick' : 'Adjust joystick size and position'}
+          title={padEdit ? 'Finish adjusting joystick' : 'Adjust joystick size and position'}
+          onClick={(e) => {
+            e.stopPropagation();
+            setPadEdit((editing) => !editing);
+          }}
+          style={{
+            position: 'absolute',
+            top: 6,
+            right: 6,
+            zIndex: 3,
+            width: 24,
+            height: 24,
+            border: '1px solid var(--line-strong)',
+            borderRadius: 'var(--r-1)',
+            background: 'rgba(0,0,0,0.72)',
+            color: 'var(--accent)',
+            cursor: 'pointer',
+            pointerEvents: 'auto',
+            fontFamily: 'var(--font-mono)',
+            fontSize: 14,
+            lineHeight: 1,
+          }}
+        >
+          {padEdit ? '✓' : '⋮'}
+        </button>
+        {padEdit && (
+          <>
+            <button
+              type="button"
+              aria-label="Move joystick"
+              title="Drag to move joystick"
+              onPointerDown={(e) => beginPadGesture(e, 'move')}
+              onPointerMove={movePadGesture}
+              onPointerUp={endPadGesture}
+              onPointerCancel={endPadGesture}
+              style={{
+                position: 'absolute',
+                top: 6,
+                left: 6,
+                zIndex: 3,
+                width: 24,
+                height: 24,
+                border: '1px solid var(--accent)',
+                borderRadius: 'var(--r-1)',
+                background: 'rgba(0,0,0,0.72)',
+                color: 'var(--accent)',
+                cursor: 'move',
+                pointerEvents: 'auto',
+                fontFamily: 'var(--font-mono)',
+                fontSize: 13,
+                lineHeight: 1,
+              }}
+            >
+              ✥
+            </button>
+            <button
+              type="button"
+              aria-label="Resize joystick"
+              title="Drag to resize joystick"
+              onPointerDown={(e) => beginPadGesture(e, 'resize')}
+              onPointerMove={movePadGesture}
+              onPointerUp={endPadGesture}
+              onPointerCancel={endPadGesture}
+              style={{
+                position: 'absolute',
+                right: 4,
+                bottom: 4,
+                zIndex: 3,
+                width: 28,
+                height: 28,
+                border: '1px solid var(--accent)',
+                borderRadius: 'var(--r-1)',
+                background: 'rgba(0,0,0,0.72)',
+                color: 'var(--accent)',
+                cursor: 'nwse-resize',
+                pointerEvents: 'auto',
+                fontFamily: 'var(--font-mono)',
+                fontSize: 13,
+                lineHeight: 1,
+              }}
+            >
+              ↘
+            </button>
+          </>
+        )}
       </div>
     </div>
   );

manifold/src/console/types.ts

@@ -76,7 +76,7 @@ export interface ConsoleCtx {
   params: MFParam[];
   /** Patch one output row in the shared store (drives stage + dock in sync). */
   setParam: (i: number, patch: Partial<MFParam>) => void;
-  addOutput: () => void;
+  addOutput: (placement?: 'prepend' | 'append') => void;
   deleteOutput: (i: number) => void;
   /** Active backend outputs currently presented by the stage + routing rows. */
   displayOutputCount: number;