Add node docs, collabora purple UI, and portable install env

Human-readable help in all six palette nodes, docs/NODES.md with usage examples, expanded example flows, and auto-detect NODERED_DIR plus CODE bridge IP from .env on any VM.

install.sh

@@ -4,15 +4,39 @@
 # Standard: INSTALL_MODE=integrate (ingen ny container, ingen port 1881)
 # Sidecar (endast om du uttryckligen vill): INSTALL_MODE=sidecar
 #
+# Miljövariabler (valfria — .env i reporoten laddas automatiskt):
+#   NODERED_DIR          Sökväg till befintlig nextcloud-node-red (auto-detekteras om tom)
+#   NODERED_CONTAINER    Docker-namn, default nextcloud-node-red
+#   NODERED_PORT         default 1880
+#   CODE_CONTAINER       Docker-namn för Collabora CODE, default code
+#   COLLABORA_IP         CODE:s bridge-IP (auto-detekteras om tom)
+#   NEXTCLOUD_URL        t.ex. https://cloud.domain.name (hints i slutet)
+#   INSTALL_USER         filägare vid chown, default ncdeploy
+#   FORCE_REBUILD=1      docker compose build --no-cache
+#
 set -euo pipefail
 
 VERSION="1.0.0"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 INSTALL_DIR="${INSTALL_DIR:-$SCRIPT_DIR}"
 INSTALL_MODE="${INSTALL_MODE:-integrate}"
+
+# Ladda .env om den finns (inga hemligheter krävs här)
+if [ -f "${INSTALL_DIR}/.env" ]; then
+    set -a
+    # shellcheck disable=SC1091
+    . "${INSTALL_DIR}/.env"
+    set +a
+fi
+
 NODERED_DIR="${NODERED_DIR:-/home/ncdeploy/nextcloud-node-red}"
+[ -n "${NODERED_DIR}" ] || NODERED_DIR="/home/ncdeploy/nextcloud-node-red"
+NODERED_CONTAINER="${NODERED_CONTAINER:-nextcloud-node-red}"
+NODERED_PORT="${NODERED_PORT:-1880}"
 CODE_CONTAINER="${CODE_CONTAINER:-code}"
-COLLABORA_IP="${COLLABORA_IP:-172.17.0.2}"
+COLLABORA_IP="${COLLABORA_IP:-}"
+NEXTCLOUD_URL="${NEXTCLOUD_URL:-https://cloud.domain.name}"
+[ -n "${NEXTCLOUD_URL}" ] || NEXTCLOUD_URL="https://cloud.domain.name"
 
 log() { printf '[install] %s\n' "$*"; }
 die() { printf '[install] FEL: %s\n' "$*" >&2; exit 1; }
@@ -41,8 +65,12 @@ fi
 chmod +x "${SCRIPT_DIR}/scripts/integrate-into-nodered.sh"
 PKG_SRC="${INSTALL_DIR}" \
     NODERED_DIR="${NODERED_DIR}" \
+    NODERED_CONTAINER="${NODERED_CONTAINER}" \
+    NODERED_PORT="${NODERED_PORT}" \
     CODE_CONTAINER="${CODE_CONTAINER}" \
     COLLABORA_IP="${COLLABORA_IP}" \
+    NEXTCLOUD_URL="${NEXTCLOUD_URL}" \
+    INSTALL_USER="${INSTALL_USER:-}" \
     bash "${SCRIPT_DIR}/scripts/integrate-into-nodered.sh"
 
 log "Klart."