refactor: separate standalone and managed room configs

- veins → shunts rename
- add cfg/standalone/ and cfg/<room>/ structure
- remove old data/*.json (moved to cfg/<room>/data/)
- update build.py and ctrl scripts

ctrl/build.sh

@@ -2,21 +2,25 @@
 # Build soleprint for local development
 #
 # Usage:
-#   ./build.sh              # Build gen/ with default config
-#   ./build.sh amar         # Build gen/ with amar room config
+#   ./build.sh              # Build gen/standalone/
+#   ./build.sh amar         # Build gen/amar/
+#   ./build.sh --all        # Build all targets
 
 set -e
 cd "$(dirname "$0")/.."
 
-CFG="${1:-}"
+TARGET="${1:-}"
 
-if [ -n "$CFG" ]; then
-    echo "Building with --cfg $CFG..."
-    python build.py dev --cfg "$CFG"
+if [ "$TARGET" = "--all" ]; then
+    echo "Building all targets..."
+    python build.py dev --all
+elif [ -n "$TARGET" ]; then
+    echo "Building gen/$TARGET/..."
+    python build.py dev --cfg "$TARGET"
 else
-    echo "Building soleprint..."
+    echo "Building gen/standalone/..."
     python build.py dev
 fi
 
 echo ""
-echo "Done. Run with: ./ctrl/start.sh"
+echo "Done. Run with: ./ctrl/start.sh [target]"