add 26.1 support, raw-capture subcommand, and local minecraft-data copy script

mc/data/copy_local_minecraft_data.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/sh
+set -xeuo pipefail
+
+# Copy minecraft-data from the local AnyGate checkout instead of cloning upstream.
+# This is used when upstream does not yet have the target version or when we want
+# to test local changes before pushing.
+
+LOCAL_MINECRAFT_DATA="${LOCAL_MINECRAFT_DATA:-$HOME/src/anygate/minecraft-data}"
+
+rm -rf minecraft-data/
+mkdir -p minecraft-data/pc
+
+cp "$LOCAL_MINECRAFT_DATA/data/dataPaths.json" minecraft-data/
+
+copy-mc() {
+  cp -r "$LOCAL_MINECRAFT_DATA/data/pc/$1" minecraft-data/pc
+}
+
+copy-mc common
+
+copy-mc 1.21.8
+copy-mc 1.21.9
+copy-mc 1.21.11
+copy-mc 26.1