archive: the /dirt/play lesson

tasks/completed_archive.json

@@ -61,5 +61,10 @@
     "date": "2026-09-24",
     "task": "midiviz: Tidal HL feed + ParVagues wave backdrop, column glow slowed 30%",
     "learning": "Tidal already ships 4 OSC targets in BootTidal.hs — mirroring superdirtShape to a 5th port (oscfeed.VIZ_PORT 57130) gives the HL trigger feed without touching SuperDirt's port; and an OSC name/value fold must compare str(k+1) keys, not int, or every named arg silently vanishes."
+  },
+  {
+    "date": "2026-09-24",
+    "task": "HL feed wired end-to-end; wordmark, single-instance, tray-via-systemctl",
+    "learning": "Tidal 1.9 addresses superdirtShape packets /dirt/play, not /play — captured off the wire, the documented address silently dropped every real packet while every synthetic test passed; and font metrics lie about letter-spacing, so a bake must scan its own ink. Synthetic tests share the author's assumptions — one real wire capture beats a hundred self-tests."
   }
 ]
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