feat: sustain (CC64), modulation (CC1), pitch bend for MIDI keyboard

- Add controllerChange forwarder for all CC messages (cmd 0xB)
- Add pitchBend method to SonicSF + MIDI handler (cmd 0xE)
- CCs routed to _synthInstance.controllerChange(ch, cc, val)
- Pitch bend routed to _synthInstance.pitchBend(ch, 14bit-val)

app/static/js/app.jsx

@@ -6758,6 +6758,7 @@ const App = () => {
                  activeMidiPitchesRef.current.add(pitch);
                  setActiveMidiPitches(new Set(activeMidiPitchesRef.current));
                  { if (window.SonicSF) {
+                   const ch = msg.data[0] & 0x0F;
                    const arSub = subTabsRef && subTabsRef.current && activeTabRef && subTabsRef.current.find(s => s.id === activeTabRef.current && s.type === 'PIANO_ROLL' && s.isArmed);
                    if (arSub) {
                      window.SonicSF.playNote(pitch, velocity, 500, undefined, arSub.instrumentProgram, null, undefined, arSub.synth_engine);
@@ -6781,6 +6782,26 @@ const App = () => {
                 setLastMidiNote(prev => prev && prev.pitch === pitch ? { ...prev, length: lenSec, time: Date.now() } : prev);
               }
               }
+            }
+
+            // ── Sustain (CC64), Modulation (CC1), Pitch Bend ──
+            const midiCh = msg.data[0] & 0x0F;
+            if (cmd === 0xB) {
+              // Controller Change: forward all CCs to SpessaSynth
+              const cc = msg.data[1];
+              const val = msg.data[2];
+              if (window.SonicSF && window.SonicSF.controllerChange) {
+                window.SonicSF.controllerChange(midiCh, cc, val);
+              }
+            } else if (cmd === 0xE) {
+              // Pitch Bend: 14-bit value (LSB + MSB)
+              const lsb = msg.data[1];
+              const msb = msg.data[2];
+              const bendVal = (msb << 7) | lsb;
+              if (window.SonicSF && window.SonicSF.pitchBend) {
+                window.SonicSF.pitchBend(midiCh, bendVal);
+              }
+            }
 
             // Forward to active MIDI recorders
             if (activeMIDIRecordersRef.current) {

app/static/js/services/soundfontPlayer.js

@@ -154,6 +154,13 @@
             return { ..._channels[channel] };
         },
 
+        pitchBend: function (channel, value) {
+            if (channel < 0 || channel > 15) return;
+            if (_initialized && _synthInstance) {
+                try { _synthInstance.pitchBend(channel, value); } catch (e) {}
+            }
+        },
+
         playNote: function (note, velocity, durationMs, startTime, program, destinationNode, channel, synthEngine) {
             if (_initialized && _synthInstance) {
                 this._playNoteSpessa(note, velocity, durationMs, startTime, program, channel, synthEngine);