refactor: 3-module pd architecture + viz non-blocking fix

- midi-in.pd: netreceive -> route -> unpack -> pitch/velocity outlets
- audio-out.pd: inlet~ -> dac~ abstraction
- synth.pd: consumer patch wiring midi-in -> voice -> audio-out
- led-matrix-viz.py: router socket non-blocking, registered with poller
- pd.rego: skip outlet/abstraction false positives in validation

pd-validator/pd.rego

@@ -100,7 +100,7 @@ violation contains msg if {
     msg := sprintf("connect[%d]/[%d]: duplicate (%d,%d)->(%d,%d)", [a.x_index, b.x_index, a.src, a.outlet, a.dst, a.inlet])
 }
 
-# Signal-to-control connection
+# Signal-to-control connection (skip unknown objects — might be abstractions with inlet~)
 violation contains msg if {
     some rec in input.records
     rec.type == "connect"
@@ -110,6 +110,7 @@ violation contains msg if {
     dst_rec.type == "obj"
     is_signal(src_rec.name)
     not is_signal(dst_rec.name)
+    known_inlets[dst_rec.name]
     msg := sprintf("connect[%d]: signal (~) outlet %d (%s) to control inlet %d (%s)", [rec.x_index, rec.src, src_rec.name, rec.dst, dst_rec.name])
 }
 
@@ -137,11 +138,14 @@ violation contains msg if {
 }
 
 # Inlet exceeds known count (skip -1 = variable)
+# Skip outlet objects (valid in abstractions) and unknown abstractions
 violation contains msg if {
     some rec in input.records
     rec.type == "connect"
     dst_rec := record_by_idx(rec.dst)
     dst_rec.type == "obj"
+    dst_rec.name != "outlet"
+    dst_rec.name != "outlet~"
     known_inlets[dst_rec.name]
     known_inlets[dst_rec.name] != -1
     rec.inlet >= known_inlets[dst_rec.name]

pd/audio-out.pd

@@ -0,0 +1,5 @@
+#N canvas 0 0 200 100 10;
+#X obj 40 20 inlet~;
+#X obj 40 60 dac~;
+#X connect 0 0 1 0;
+#X connect 0 0 1 1;

pd/midi-in.pd

@@ -0,0 +1,14 @@
+#N canvas 0 0 300 200 10;
+#X obj 40 20 netreceive -u 8081;
+#X obj 40 50 route midi;
+#X obj 40 80 route 144 128;
+#X obj 40 110 unpack 0 0;
+#X obj 40 150 outlet;
+#X obj 120 150 outlet;
+#X text 155 150 pitch;
+#X text 155 170 velocity;
+#X connect 0 0 1 0;
+#X connect 1 0 2 0;
+#X connect 2 0 3 0;
+#X connect 3 0 4 0;
+#X connect 3 1 5 0;

pd/synth.pd

@@ -1,40 +1,33 @@
-#N canvas 0 0 350 500 10;
+#N canvas 0 0 500 600 10;
-#X obj 40 20 netreceive -u 8081;
+#X obj 40 20 midi-in;
-#X obj 40 50 route midi;
+#X obj 40 80 stripnote;
-#X obj 40 80 route 144 128;
+#X obj 40 140 mtof;
-#X obj 40 110 unpack 0 0;
+#X obj 40 180 osc~;
-#X obj 40 150 s midi-pitch;
+#X obj 160 180 osc~;
-#X obj 120 150 s midi-vel;
+#X obj 40 220 *~ 1;
-#X obj 40 200 r midi-vel;
+#X obj 160 220 *~ 1;
-#X obj 120 200 r midi-pitch;
+#X obj 100 260 +~;
-#X obj 40 250 stripnote;
+#X obj 100 300 lop~ 10000;
-#X obj 40 310 mtof;
+#X obj 40 340 env~ 2 10 1 40;
-#X obj 40 350 env~ 2 10 1 40;
+#X obj 100 380 *~;
-#X obj 40 430 osc~;
+#X obj 100 440 audio-out;
-#X obj 160 430 osc~;
+#X text 200 180 osc~ 1 (main);
-#X obj 40 470 *~ 1;
+#X text 320 180 osc~ 2 (+7ct);
-#X obj 160 470 *~ 1;
+#X text 155 220 mix;
-#X obj 100 510 +~;
+#X text 155 300 lop~;
-#X obj 100 550 lop~ 10000;
+#X text 155 340 envelope;
-#X obj 100 610 *~;
+#X text 155 380 amp;
-#X obj 100 670 dac~;
 #X connect 0 0 1 0;
+#X connect 0 1 1 1;
 #X connect 1 0 2 0;
+#X connect 1 1 9 1;
 #X connect 2 0 3 0;
-#X connect 3 0 4 0;
+#X connect 2 0 4 0;
-#X connect 3 1 5 0;
+#X connect 3 0 5 0;
-#X connect 6 0 8 1;
+#X connect 4 0 6 0;
+#X connect 5 0 7 0;
+#X connect 6 0 7 1;
 #X connect 7 0 8 0;
-#X connect 8 1 10 0;
+#X connect 8 0 10 0;
-#X connect 8 0 9 0;
+#X connect 9 0 10 1;
-#X connect 9 0 11 0;
+#X connect 10 0 11 0;
-#X connect 9 0 12 0;
-#X connect 10 0 17 1;
-#X connect 11 0 13 0;
-#X connect 12 0 14 0;
-#X connect 13 0 15 0;
-#X connect 14 0 15 1;
-#X connect 15 0 16 0;
-#X connect 16 0 17 0;
-#X connect 17 0 18 0;
-#X connect 17 0 18 1;

scripts/led-matrix-viz.py

@@ -26,9 +26,10 @@ def main():
     sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
     sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
     sock.bind(("0.0.0.0", VIZ_PORT))
+    sock.setblocking(False)
 
     router = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-    router.settimeout(2)
+    router.setblocking(False)
     router.connect(ROUTER_SOCK)
     packer = msgpack.Packer()
 
@@ -38,9 +39,11 @@ def main():
     msg_id = 0
     frame_interval = 1.0 / FPS
     next_frame = time.monotonic()
+    router_buf = b""
 
     poller = select.poll()
     poller.register(sock, select.POLLIN)
+    poller.register(router, select.POLLIN)
 
     while True:
         timeout = max(0, int((next_frame - time.monotonic()) * 1000))
@@ -70,6 +73,12 @@ def main():
                 except BlockingIOError:
                     pass
 
+            if fd == router.fileno() and flags & select.POLLIN:
+                try:
+                    router_buf += router.recv(4096)
+                except BlockingIOError:
+                    pass
+
         if time.monotonic() >= next_frame:
             next_frame = time.monotonic() + frame_interval
 
@@ -92,16 +101,8 @@ def main():
                 req = packer.pack([0, msg_id, "draw_frame", params])
                 try:
                     router.sendall(req)
-                    router.settimeout(0.3)
+                except BlockingIOError:
-                    router.recv(128)
-                    router.settimeout(2)
-                except socket.timeout:
                     pass
-                except OSError:
-                    router.close()
-                    router = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-                    router.settimeout(2)
-                    router.connect(ROUTER_SOCK)
                 last_frame = frame
 
 if __name__ == "__main__":