midiviz: the focus column holds instead of breathing; the wordmark sharpens

PLN: 'its weird moving a djf makes the col grow then shrink over time' —
width on a decay curve was motion with no meaning; the played column now
HOLDS 2x while in use, hands cause the only transitions, uniform after
FOCUS_HOLD of silence. Wordmark: two tight glow rings instead of a wide
fog, tighter tracking, condense floored at 0.75 — nine ExtraBold glyphs
are ~9.4em and three columns ~3.9em, so the rest goes to height. oscfeed
says 'first trigger received (dN)' once, so 'is Tidal even sending' is a
journalctl away.

tools/bridge/oscfeed.py

@@ -19,6 +19,7 @@ from __future__ import annotations
 
 import socket
 import struct
+import sys
 import threading
 import time
 from collections import deque
@@ -182,6 +183,12 @@ class HLFeed:
                     self._q.append({"orbit": o, "t": now,
                                     "params": msg["args"]})
                     self.total += 1
+                    first = self.total == 1
+            if first:
+                # One line, once: the question "is Tidal even sending?" is
+                # answered by the journal, not by staring at a silent grid.
+                print("⚓ HL feed: first trigger received (d%d)" % o,
+                      file=sys.stderr, flush=True)
 
     def alive(self) -> bool:
         return self._sock is not None and self.error is None