feat: launch local-first Sudoku workbench

public/toolbox-app.json

@@ -0,0 +1,41 @@
+{
+  "$schema": "https://git.add-ideas.de/lotobo/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json",
+  "schemaVersion": 1,
+  "id": "de.add-ideas.sudoku-tools",
+  "name": "Sudoku Tools",
+  "version": "0.1.0",
+  "description": "Set, play, solve and analyse Sudoku puzzles locally in the browser.",
+  "entry": "./",
+  "icon": "./favicon.svg",
+  "categories": ["games", "puzzles", "logic"],
+  "tags": ["sudoku", "killer", "solver", "setter", "generator", "candidates"],
+  "integration": {
+    "contextVersion": 1,
+    "launchModes": ["navigate", "new-tab"],
+    "embedding": "unsupported"
+  },
+  "requirements": {
+    "secureContext": false,
+    "workers": true,
+    "indexedDb": true,
+    "crossOriginIsolated": false,
+    "topLevelContext": false
+  },
+  "privacy": {
+    "processing": "local",
+    "fileUploads": false,
+    "telemetry": false,
+    "label": "Puzzles and progress stay in this browser; nothing is uploaded."
+  },
+  "source": {
+    "repository": "https://git.add-ideas.de/lotobo/sudoku-tools",
+    "license": "GPL-3.0-or-later"
+  },
+  "actions": [
+    {
+      "id": "source",
+      "label": "Source",
+      "url": "https://git.add-ideas.de/lotobo/sudoku-tools"
+    }
+  ]
+}