AbleSet 1.0.0: follow AbleSet's setlist over OSC

A new module that subscribes to AbleSet's OSC API (UDP 39051) and streams
what it is playing to ten tiles: Now Playing (song, tempo, meter, duration,
time left, section, progress bar, next song, songs left), Song Sections
(a sliding strip, or a lottery wheel from the title bar), Setlist,
Transport, Tempo, Song Time, Set Time, Section, Next Song and Status, each
coloured by its state. The song and set countdowns are offered to the
Timers module.

A heartbeat watchdog resubscribes when AbleSet goes quiet (a restarted
AbleSet forgets its subscribers). Time left falls back to the song length
and playhead when AbleSet stops sending it (Live disconnected).

tools/ableset-mock.js plays a setlist over the same API for testing.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

modules/ableset/module.json

@@ -0,0 +1,36 @@
+{
+  "id": "ableset",
+  "name": "AbleSet",
+  "version": "1.0.0",
+  "proddash": ">=1.5.0",
+  "description": "The song AbleSet is playing — tempo, time left, sections, setlist and status",
+  "permissions": [
+    {
+      "kind": "local-network",
+      "reason": "Following AbleSet on this network"
+    }
+  ],
+  "provides": ["timers"],
+  "client": "client.js",
+  "server": "server.js",
+  "style": "style.css",
+  "minSize": {
+    "w": 1,
+    "h": 1
+  },
+  "defaultSize": {
+    "w": 8,
+    "h": 4
+  },
+  "configSchema": {
+    "ableset": {
+      "type": "endpoint",
+      "label": "AbleSet",
+      "default": {
+        "host": "",
+        "port": 39051
+      },
+      "help": "The Mac running AbleSet (e.g. AB-Tracks.local). 39051 is AbleSet's OSC port; it only changes if someone changed it in AbleSet's settings."
+    }
+  }
+}