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/start.sh

@@ -1,28 +1,32 @@
 #!/bin/bash
-# Start soleprint with Docker (for network access to other services)
+# Start soleprint with Docker
 #
 # Usage:
-#   ./start.sh              # Start in foreground
-#   ./start.sh -d           # Start detached
-#   ./start.sh --build      # Rebuild image first
+#   ./start.sh              # Start standalone
+#   ./start.sh amar         # Start amar
+#   ./start.sh -d           # Detached
+#   ./start.sh amar -d      # Start amar detached
 
 set -e
 cd "$(dirname "$0")/.."
 
-# Ensure gen/ exists
-if [ ! -d "gen" ]; then
-    echo "gen/ not found. Run ./ctrl/build.sh first"
-    exit 1
-fi
-
-cd gen
-
+TARGET="standalone"
 ARGS=""
+
 for arg in "$@"; do
     case $arg in
         -d|--detach) ARGS="$ARGS -d" ;;
         --build) ARGS="$ARGS --build" ;;
+        *) TARGET="$arg" ;;
     esac
 done
 
+GEN_DIR="gen/$TARGET"
+
+if [ ! -d "$GEN_DIR" ]; then
+    echo "$GEN_DIR not found. Run ./ctrl/build.sh $TARGET first"
+    exit 1
+fi
+
+cd "$GEN_DIR"
 docker compose up $ARGS