Add integration docs and synthetic command examples

examples/minimal-merge/input-alice.json

@@ -0,0 +1,14 @@
+{
+  "segments": [
+    {
+      "start": 0.0,
+      "end": 1.2,
+      "text": " Hello there. "
+    },
+    {
+      "start": 2.6,
+      "end": 3.1,
+      "text": "Okay."
+    }
+  ]
+}