Refactor kafka to pure Go (franz-go), fix DBC stubs, update Dockerfile

scripts/generate-dbc.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# Generate DBC Go packages from DBC files
+# Usage: ./scripts/generate-dbc.sh /path/to/dbc/files
+
+set -e
+
+DBC_SOURCE="${1:-}"
+
+if [ -z "$DBC_SOURCE" ]; then
+    echo "Usage: $0 /path/to/dbc/files"
+    echo ""
+    echo "DBC files should be in a directory structure like:"
+    echo "  dbc/"
+    echo "    fm29_frs90.dbc"
+    echo "    fm29_frsd0.dbc"
+    echo "    ..."
+    exit 1
+fi
+
+if [ ! -d "$DBC_SOURCE" ]; then
+    echo "Error: DBC source directory not found: $DBC_SOURCE"
+    exit 1
+fi
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+echo "Generating DBC packages from: $DBC_SOURCE"
+echo "Output directory: $REPO_ROOT/pkg/dbc"
+
+go run "$REPO_ROOT/pkg/can-go/cmd/cantool" generate "$DBC_SOURCE" "$REPO_ROOT/pkg/dbc"
+
+echo "Done! Generated packages in pkg/dbc/"