Add audio nodes to the patch bay

Also make the patch bay responsive.

build-web.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# Build the synth-visualiser WASM package and place it in www/pkg/.
+#
+# Usage:
+#   ./build-web.sh          # release build (optimised)
+#   ./build-web.sh --dev    # dev build (faster, no wasm-opt)
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# ── Argument parsing ──────────────────────────────────────────────────────────
+MODE="release"
+WASM_PACK_PROFILE="--release"
+for arg in "$@"; do
+    case "$arg" in
+        --dev)  MODE="dev"; WASM_PACK_PROFILE="--dev" ;;
+        --help) echo "Usage: $0 [--dev]"; exit 0 ;;
+        *)      echo "Unknown argument: $arg"; exit 1 ;;
+    esac
+done
+
+# ── Preflight checks ──────────────────────────────────────────────────────────
+if ! command -v wasm-pack &>/dev/null; then
+    echo "error: wasm-pack not found. Install it with:"
+    echo "  cargo install wasm-pack"
+    exit 1
+fi
+
+if ! rustup target list --installed | grep -q "wasm32-unknown-unknown"; then
+    echo "Adding wasm32-unknown-unknown target..."
+    rustup target add wasm32-unknown-unknown
+fi
+
+# ── Build ─────────────────────────────────────────────────────────────────────
+echo "Building synth-visualiser ($MODE)..."
+wasm-pack build crates/synth-visualiser \
+    $WASM_PACK_PROFILE \
+    --target web \
+    --out-dir ../../www/pkg
+
+echo ""
+echo "Done. Serve with:"
+echo "  npx serve www"
+echo "  or"
+echo "  python3 -m http.server --directory www 8080"