chore: project config and the logo source

- process-palette.json wires the editor's command palette to the rig's own
  entrypoints (Init MIDI Channels -> init_midi.sh, and the rest). The whole
  'one entrypoint, fewer files' goal is only real if the editor knows where
  the entrypoints are, so this is rig config, not editor preference.
- sketch.properties points the Processing sketch at its main .pde.
- Logo.xcf is the editable source of the ParVagues mark, from 2025-05. The
  armada design system is documented down to its type stack and its reserved
  brand magenta, and the one file you cannot regenerate from any of that is
  the layered original. 1.2 MB to never have to redraw it.

Deliberately still untracked: TODO.md. It is a paused 2026-06-22 perf/thermal
board, and TASKS_DUMP.md has been the board since 2026-08-16. Committing it
would put a second answer to 'what is next' in the tree, which is the shape
that keeps biting us. PLN's call: fold its two live items into TASKS_DUMP and
delete it, or keep it as a scratch file outside git.

process-palette.json

+{
+  "patterns": {
+    "P1": {
+      "expression": "(path):(line)"
+    },
+    "P2": {
+      "expression": "(path)\\s+(line)",
+      "path": "(?:\\/[\\w\\.\\-]+)+"
+    }
+  },
+  "commands": [
+    {
+      "namespace": "process-palette",
+      "action": "Init MIDI Channels",
+      "command": "/home/pln/Work/Sound/Tidal/init_midi.sh",
+      "arguments": [],
+      "cwd": null,
+      "inputDialogs": [],
+      "env": {},
+      "keystroke": null,
+      "stream": true,
+      "outputTarget": "panel",
+      "outputBufferSize": 80000,
+      "maxCompleted": null,
+      "autoShowOutput": true,
+      "autoHideOutput": false,
+      "scrollLockEnabled": false,
+      "singular": false,
+      "promptToSave": true,
+      "saveOption": "none",
+      "patterns": [
+        "default"
+      ],
+      "successOutput": "{stdout}",
+      "errorOutput": "{stdout}\n{stderr}",
+      "fatalOutput": "Failed to execute : {fullCommand}\n{stdout}\n{stderr}",
+      "startMessage": null,
+      "successMessage": "Executed : {fullCommand}",
+      "errorMessage": "Executed : {fullCommand}\nReturned with code {exitStatus}\n{stderr}",
+      "fatalMessage": "Failed to execute : {fullCommand}\n{stdout}\n{stderr}",
+      "menus": [
+        "TidalCycles"
+      ],
+      "startScript": null,
+      "successScript": null,
+      "errorScript": null,
+      "scriptOnStart": false,
+      "scriptOnSuccess": false,
+      "scriptOnError": false,
+      "notifyOnStart": false,
+      "notifyOnSuccess": true,
+      "notifyOnError": true,
+      "input": null
+    }
+  ]
+}
\ No newline at end of file

sketch.properties

+main=didacticpatternvisualizer.pde