Use icon buttons in the circuit list editor

- New IconButton/IconButtonSeparator component based on lucide-react.
- Toolbar: icon plus text, grouped into history, view and insert blocks.
- Group headers: compact icons for add circuit, upstream fuse (VS), group
  RCD (FI), edit, move up/down, renumber and delete; the header no longer
  overflows the grid.
- Rows: add device, delete circuit (trash) and delete device (ListX).
- The previous German labels remain accessible names and tooltips;
  destructive actions highlight in the danger color.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.dockerignore

@@ -6,3 +6,6 @@ data
 *.db
 .env
 .env.*
+# Lokale Werkzeug- und Agenten-Artefakte gehoeren nicht ins Image.
+.codex
+.agents

.gitignore

@@ -1,6 +1,9 @@
 node_modules/
 dist/
 .next/
+# Streuprodukt von tsc; drizzle-kit liest drizzle.config.ts.
+/drizzle.config.js
 data/*.db
 data/backups/*.db
 .codex/*.log
+dynamo/output/

AGENTS.md

@@ -167,6 +167,13 @@ Keyboard behavior:
 
 Support Ctrl+Plus and Ctrl+Shift+Plus for insertion.
 
+Editor actions use `IconButton` (`src/frontend/components/icon-button.tsx`,
+`lucide-react` icons). The German action text is always the accessible name and
+tooltip; the toolbar shows icon plus text, group headers and rows show icons
+only, separated into logical blocks with `IconButtonSeparator`. Destructive
+actions use `variant="danger"` (trash icon for circuits and groups, `ListX` for
+removing a device row).
+
 ## Bootstrap / Styling Rule
 
 Bootstrap may be used for the general application UI, such as navigation, page layout, buttons, forms, cards, alerts and modals.

Dockerfile

@@ -1,14 +1,56 @@
-FROM node:22
-WORKDIR /app
+# syntax=docker/dockerfile:1
 
+# ---------------------------------------------------------------------------
+# deps: vollstaendiger Abhaengigkeitsbaum, gemeinsam genutzt von "dev" und
+# "build". Bleibt auf dem vollen node-Image, weil better-sqlite3 beim
+# Installieren eine Toolchain braucht.
+# ---------------------------------------------------------------------------
+FROM node:24 AS deps
+WORKDIR /app
 COPY package*.json ./
 RUN npm ci
 
+# ---------------------------------------------------------------------------
+# dev: Ziel fuer compose.dev.yaml. Behaelt devDependencies, damit tsx,
+# drizzle-kit und "next dev" verfuegbar sind. Die Quellen kommen zur Laufzeit
+# ueber Bind-Mounts, das COPY hier ist nur der Ausgangsstand.
+# ---------------------------------------------------------------------------
+FROM deps AS dev
+ENV NODE_ENV=development
+COPY . .
+RUN mkdir -p data
+EXPOSE 3000 3001
+CMD ["npm", "run", "dev:api"]
+
+# ---------------------------------------------------------------------------
+# build: API nach dist/ und Frontend nach .next/ uebersetzen, danach die
+# devDependencies entfernen, damit das Laufzeit-Image nur noch traegt, was es
+# auch ausfuehrt. Die Migrationsskripte kommen mit drizzle-orm und
+# better-sqlite3 aus, beides sind regulaere dependencies.
+# ---------------------------------------------------------------------------
+FROM deps AS build
+ENV NEXT_TELEMETRY_DISABLED=1
+# next build schreibt die Rewrite-Ziele aus next.config.mjs fest in
+# .next/routes-manifest.json, "next start" kann eine andere API-Adresse
+# spaeter nicht mehr uebernehmen. Der Wert muss hier bekannt sein, nicht erst
+# zur Laufzeit. Server-Komponenten lesen die Variable zur Laufzeit.
+ARG API_INTERNAL_URL=http://localhost:3000
+ENV API_INTERNAL_URL=$API_INTERNAL_URL
 COPY . .
 RUN npm run build:api && npm run build:web
+RUN npm prune --omit=dev
 
-RUN mkdir -p data && chmod +x scripts/docker-start.sh
-
-EXPOSE 3001
-
-CMD ["sh", "scripts/docker-start.sh"]
+# ---------------------------------------------------------------------------
+# prod: Laufzeit-Image. node:24-slim teilt sich das Debian-Release mit der
+# build-Stufe, damit das kompilierte better-sqlite3-Binding ladbar bleibt.
+# Laeuft als "node" (UID 1000) statt als root.
+# ---------------------------------------------------------------------------
+FROM node:24-slim AS prod
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+WORKDIR /app
+COPY --from=build --chown=node:node /app ./
+RUN mkdir -p data && chown node:node data
+USER node
+EXPOSE 3000 3001
+CMD ["node", "dist/server/index.js"]

README.md

@@ -50,27 +50,50 @@ docker compose up --build --detach
 Danach:
 
 - Frontend: <http://localhost:3001>
-- API-Healthcheck: <http://localhost:3000/health>
+- API-Healthcheck: <http://localhost:3001/health> (über den Next.js-Rewrite)
+
+Die Express-API ist nicht mehr auf dem Host veröffentlicht. Sie hat keine
+Authentifizierung und ist nur innerhalb des Compose-Netzes erreichbar; der
+Zugriff läuft über den Rewrite im Web-Dienst.
 
 Der API-Container führt ausstehende Migrationen und die Schemaprüfung beim Start
 automatisch aus. Die SQLite-Datei liegt auf dem Host unter
 `data/leistungsbilanz.db` und bleibt beim Stoppen erhalten.
 
+Das Laufzeit-Image läuft als Benutzer `node` (UID 1000), nicht als root. Ein
+`data/`-Verzeichnis, das ein früherer root-Container angelegt hat, braucht
+deshalb einmalig `sudo chown -R 1000:1000 data` auf dem Host.
+
 ```powershell
 docker compose ps
 docker compose logs --follow
 docker compose down
 ```
 
-Der Compose-Stack startet Entwicklungsserver mit Quellcode-Mounts. Er ist kein
-Produktionsdeployment. Details stehen in
+`compose.yaml` startet den Produktionsstand: gebautes `dist/` und `next start`,
+ohne Quellcode-Mounts und ohne Datei-Watcher, mit Speichergrenzen und ohne
+root-Rechte im Container. Details stehen in
 [Deployment und Betrieb](docs/deployment.md).
 
+Für die Entwicklung mit Hot Reload gibt es einen eigenen Stack mit
+Quellcode-Mounts und Watchern:
+
+```powershell
+docker compose -f compose.dev.yaml up --build --detach
+docker compose -f compose.dev.yaml logs --follow
+docker compose -f compose.dev.yaml down
+```
+
+Die Watcher darin laufen im Polling-Modus, weil Bind-Mounts unter Windows und
+macOS keine inotify-Events durchreichen. Das kostet dauerhaft CPU, auch wenn
+niemand die Anwendung benutzt — deshalb gehört dieser Stack nicht auf einen
+Server.
+
 ## Direkte lokale Entwicklung
 
 Voraussetzungen:
 
-- Node.js 22
+- Node.js 24
 - npm
 
 ```powershell

compose.dev.yaml

@@ -0,0 +1,101 @@
+# Entwicklungs-Stack: Quellcode-Mounts, laufende Dev-Server, Hot Reload.
+#   docker compose -f compose.dev.yaml up --build
+#
+# Die Polling-Watcher unten sind fuer Bind-Mounts unter Windows und macOS
+# noetig, weil inotify-Events die VM-Grenze nicht passieren. Sie kosten
+# dauerhaft CPU; genau deshalb laufen im Server-Stack (compose.yaml) gar
+# keine Watcher.
+#
+# Der Projektname muss sich von dem des Server-Stacks unterscheiden, damit
+# "docker compose down" in diesem Verzeichnis niemals einen laufenden
+# Server-Stack abraeumen kann.
+name: leistungsbilanz-dev
+
+x-service-defaults: &service-defaults
+  init: true
+  restart: unless-stopped
+  stop_grace_period: 20s
+  logging:
+    driver: json-file
+    options:
+      max-size: "20m"
+      max-file: "10"
+
+services:
+  api:
+    <<: *service-defaults
+    build:
+      context: .
+      target: dev
+    command:
+      - sh
+      - -c
+      - npm run db:migrate && npm run db:verify:circuit-schema && exec npm run dev:api
+    environment:
+      PORT: "3000"
+      CHOKIDAR_USEPOLLING: "true"
+      LOG_LEVEL: "${LOG_LEVEL:-debug}"
+    # Nur auf dem Loopback: nichts davon ist authentifiziert, die API darf
+    # nicht aus dem LAN erreichbar sein.
+    ports:
+      - "127.0.0.1:3000:3000"
+    # Kein memswap_limit wie im Server-Stack: beim Entwickeln ist Swap als
+    # Puffer erwuenscht, die Grenze soll nur den Host vor Dauerlast schuetzen.
+    mem_limit: 1g
+    volumes:
+      - ./src:/app/src
+      - ./scripts:/app/scripts
+      - ./data:/app/data
+      - ./drizzle.config.ts:/app/drizzle.config.ts:ro
+      - ./tsconfig.json:/app/tsconfig.json:ro
+    healthcheck:
+      test:
+        - CMD
+        - node
+        - -e
+        - fetch('http://127.0.0.1:3000/health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+      interval: 30s
+      timeout: 3s
+      retries: 5
+      start_period: 20s
+
+  web:
+    <<: *service-defaults
+    build:
+      context: .
+      target: dev
+    command:
+      - npm
+      - run
+      - dev:web
+      - --
+      - --hostname
+      - 0.0.0.0
+    environment:
+      API_INTERNAL_URL: http://api:3000
+      WATCHPACK_POLLING: "true"
+      NEXT_TELEMETRY_DISABLED: "1"
+      LOG_LEVEL: "${LOG_LEVEL:-debug}"
+    depends_on:
+      api:
+        condition: service_healthy
+    ports:
+      - "127.0.0.1:3001:3001"
+    # "next dev" haelt Kompilierzustand und waechst im Dauerbetrieb stetig;
+    # die Grenze macht daraus einen Container-Neustart statt Host-Swapping.
+    mem_limit: 2g
+    volumes:
+      - ./src:/app/src
+      - ./next.config.mjs:/app/next.config.mjs:ro
+      - ./tsconfig.json:/app/tsconfig.json:ro
+      - ./tsconfig.next.json:/app/tsconfig.next.json:ro
+    healthcheck:
+      test:
+        - CMD
+        - node
+        - -e
+        - fetch('http://127.0.0.1:3001/web-health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+      interval: 30s
+      timeout: 3s
+      retries: 5
+      start_period: 20s

compose.yaml

@@ -1,82 +1,104 @@
+# Server-Stack: gebauter Stand, keine Quellcode-Mounts, keine Datei-Watcher.
+#   docker compose up --build --detach
+#
+# Fuer die Entwicklung mit Hot Reload compose.dev.yaml verwenden.
 name: leistungsbilanz
 
+x-build: &build
+  context: .
+  target: prod
+  args:
+    # Wird von next build in .next/routes-manifest.json eingebacken, siehe
+    # Dockerfile. Muss der API-Adresse in diesem Netz entsprechen.
+    API_INTERNAL_URL: http://api:3000
+
+x-service-defaults: &service-defaults
+  init: true
+  restart: unless-stopped
+  # Der API-Prozess beendet HTTP-Server und SQLite-Handle auf SIGTERM; die
+  # Frist gibt laufenden Requests Zeit, statt sie nach 10s in ein SIGKILL
+  # laufen zu lassen.
+  stop_grace_period: 20s
+  # Das Image laeuft als "node" (UID 1000); zusaetzliche Rechte braucht
+  # weder der API- noch der Web-Prozess.
+  security_opt:
+    - no-new-privileges:true
+  cap_drop:
+    - ALL
+  logging:
+    driver: json-file
+    options:
+      max-size: "20m"
+      max-file: "10"
+
 services:
   api:
-    build:
-      context: .
+    <<: *service-defaults
+    build: *build
+    # "exec" beim letzten Schritt: sonst bleibt sh der Vordergrundprozess und
+    # SIGTERM erreicht node nie.
     command:
       - sh
       - -c
-      - npm run db:migrate && npm run db:verify:circuit-schema && npm run dev:api
+      - node scripts/run-migrations.js && node scripts/db-verify-circuit-schema.js && exec node dist/server/index.js
     environment:
+      NODE_ENV: production
       PORT: "3000"
-      CHOKIDAR_USEPOLLING: "true"
       LOG_LEVEL: "${LOG_LEVEL:-info}"
-    init: true
-    restart: unless-stopped
-    logging:
-      driver: json-file
-      options:
-        max-size: "20m"
-        max-file: "10"
-    ports:
-      - "3000:3000"
+    # Nicht auf dem Host veroeffentlicht: die API hat keine Authentifizierung
+    # und wird ueber den Next.js-Rewrite im Web-Dienst erreicht.
+    expose:
+      - "3000"
+    # Harte Obergrenze statt unbegrenztem Wachstum. memswap_limit == mem_limit
+    # schaltet Swap fuer den Container ab, damit ein Leck den Container trifft
+    # und nicht den Host.
+    mem_limit: 512m
+    memswap_limit: 512m
     volumes:
-      - ./src:/app/src
-      - ./scripts:/app/scripts
       - ./data:/app/data
-      - ./drizzle.config.ts:/app/drizzle.config.ts:ro
-      - ./tsconfig.json:/app/tsconfig.json:ro
     healthcheck:
       test:
         - CMD
         - node
         - -e
-        - fetch('http://localhost:3000/health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
-      interval: 5s
+        - fetch('http://127.0.0.1:3000/health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+      interval: 30s
       timeout: 3s
-      retries: 12
+      retries: 5
       start_period: 20s
 
   web:
-    build:
-      context: .
+    <<: *service-defaults
+    build: *build
     command:
-      - npm
-      - run
-      - dev:web
-      - --
+      - node_modules/.bin/next
+      - start
+      - -p
+      - "3001"
       - --hostname
       - 0.0.0.0
     environment:
+      NODE_ENV: production
       API_INTERNAL_URL: http://api:3000
-      WATCHPACK_POLLING: "true"
       NEXT_TELEMETRY_DISABLED: "1"
       LOG_LEVEL: "${LOG_LEVEL:-info}"
-    init: true
-    restart: unless-stopped
-    logging:
-      driver: json-file
-      options:
-        max-size: "20m"
-        max-file: "10"
     depends_on:
       api:
         condition: service_healthy
     ports:
       - "3001:3001"
-    volumes:
-      - ./src:/app/src
-      - ./next.config.mjs:/app/next.config.mjs:ro
-      - ./tsconfig.json:/app/tsconfig.json:ro
-      - ./tsconfig.next.json:/app/tsconfig.next.json:ro
+    mem_limit: 1g
+    memswap_limit: 1g
     healthcheck:
+      # /web-health statt /health: next.config.mjs leitet /health an die API
+      # weiter, und "/" wuerde wegen des Redirects auf /projects bei jeder
+      # Probe zwei Seiten rendern.
       test:
         - CMD
         - node
         - -e
-        - fetch('http://localhost:3001/').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
-      interval: 5s
+        - fetch('http://127.0.0.1:3001/web-health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+      interval: 30s
       timeout: 3s
-      retries: 12
+      retries: 5
       start_period: 20s

docs/deployment.md

@@ -2,21 +2,57 @@
 
 ## Aktueller Status
 
-Es gibt derzeit kein unterstütztes Produktionsdeployment.
+Es gibt zwei Compose-Stacks.
 
-`compose.yaml` ist ausschließlich für lokale Entwicklung vorgesehen. Es startet
-`tsx watch` und `next dev`, bindet Quellcode vom Host ein und enthält weder TLS,
-Authentifizierung, Reverse Proxy, Prozesshärtung noch ein zentral betriebenes
-Datenbanksystem. Der Stack darf deshalb nicht als produktionsreif bezeichnet oder
-öffentlich erreichbar gemacht werden.
+`compose.yaml` startet den gebauten Stand: `node dist/server/index.js` und
+`next start`, ohne Quellcode-Mounts und ohne Datei-Watcher. Das ist der Stack
+für einen Server. Beide Dienste laufen aus der `prod`-Stufe des Dockerfiles,
+also als Benutzer `node` statt als root, ohne devDependencies, mit
+`cap_drop: ALL`, `no-new-privileges` und harten Speichergrenzen.
 
-## Entwicklungs-Topologie
+`compose.dev.yaml` startet `tsx watch` und `next dev` und bindet Quellcode vom
+Host ein. Die Watcher laufen im Polling-Modus, weil Bind-Mounts unter Windows
+und macOS keine inotify-Events durchreichen; das kostet dauerhaft CPU, auch
+ohne Benutzeraktivität. Dieser Stack gehört deshalb nur auf einen
+Entwicklungsrechner.
 
-| Komponente | Port | Healthcheck | Persistenz |
-| --- | ---: | --- | --- |
-| Next.js Web | 3001 | `GET /` | keine |
-| Express API | 3000 | `GET /health` | `./data:/app/data` |
-| SQLite | Datei | Integritäts-/FK-Prüfung via Backup und Skript | `data/leistungsbilanz.db` |
+Beides enthält weder TLS, Authentifizierung, Reverse Proxy, Prozesshärtung noch
+ein zentral betriebenes Datenbanksystem. Der Stack darf deshalb nicht öffentlich
+erreichbar gemacht werden.
+
+## Topologie
+
+| Komponente | Port | Auf dem Host | Healthcheck | Persistenz |
+| --- | ---: | --- | --- | --- |
+| Next.js Web | 3001 | `3001` (Server) / `127.0.0.1:3001` (Dev) | `GET /web-health` | keine |
+| Express API | 3000 | nicht veröffentlicht (Server) / `127.0.0.1:3000` (Dev) | `GET /health` | `./data:/app/data` |
+| SQLite | Datei | – | Integritäts-/FK-Prüfung via Backup und Skript | `data/leistungsbilanz.db` |
+
+Die Express-API wird im Server-Stack nicht mehr auf dem Host veröffentlicht
+(`expose` statt `ports`). Sie hat keine Authentifizierung; jeder, der sie
+erreicht, kann jedes Projekt lesen und ändern. Erreichbar ist sie nur aus dem
+Compose-Netz, praktisch also über den Next.js-Rewrite. Im Entwicklungs-Stack
+hängen beide Ports am Loopback und sind nicht aus dem LAN erreichbar.
+
+### Speichergrenzen
+
+Jeder Dienst hat ein `mem_limit`. Im Server-Stack ist zusätzlich
+`memswap_limit` auf denselben Wert gesetzt, womit Swap für den Container
+abgeschaltet ist: ein Speicherleck lässt dann den Container am OOM-Killer
+sterben und `restart: unless-stopped` greift, statt dass der Host in den Swap
+läuft. Aktuell 512 MB für die API und 1 GB für das Frontend. Der
+Entwicklungs-Stack bekommt 1 GB bzw. 2 GB und behält Swap, weil `next dev`
+Kompilierzustand hält und im Dauerbetrieb stetig wächst.
+
+### Rechte im Container
+
+Das Laufzeit-Image läuft als `node` (UID 1000). Ein `data/`-Verzeichnis, das
+ein früherer root-Container angelegt hat, ist dann nicht beschreibbar und
+braucht einmalig auf dem Host:
+
+```bash
+sudo chown -R 1000:1000 data
+```
 
 Verwendete Umgebungsvariablen:
 
@@ -24,15 +60,22 @@ Verwendete Umgebungsvariablen:
 - `API_INTERNAL_URL` – internes API-Ziel des Next.js-Rewrites, im Compose-Netz
   `http://api:3000`
 - `NEXT_TELEMETRY_DISABLED=1`
-- `CHOKIDAR_USEPOLLING=true` und `WATCHPACK_POLLING=true` für lokale
-  Dateibeobachtung in Docker
+- `CHOKIDAR_USEPOLLING=true` und `WATCHPACK_POLLING=true` – nur in
+  `compose.dev.yaml`, für Dateibeobachtung über Bind-Mounts hinweg
 - `LOG_LEVEL` – steuert für beide Dienste die Ausgabestufe des strukturierten
   JSON-Loggers (`error`, `warn`, `info`, `verbose`, `debug`), Standard `info`.
   Setzbar über eine `.env`-Datei neben `compose.yaml` oder
   `LOG_LEVEL=verbose docker compose up`.
 
-Beim API-Start laufen zuerst `npm run db:migrate` und
-`npm run db:verify:circuit-schema`.
+Beim API-Start laufen zuerst die Migrationen und die Schemaprüfung
+(`scripts/run-migrations.js` und `scripts/db-verify-circuit-schema.js`, im
+Entwicklungsstack über `npm run db:migrate` und
+`npm run db:verify:circuit-schema`).
+
+`API_INTERNAL_URL` wirkt für `next start` zur **Build-Zeit**: `next build`
+schreibt die Rewrite-Ziele aus `next.config.mjs` fest in
+`.next/routes-manifest.json`. `compose.yaml` reicht den Wert deshalb als
+Build-Argument an das Image durch, nicht nur als Laufzeit-Variable.
 
 ## Logging
 
@@ -68,11 +111,25 @@ einem unbekannten Zustand weiterzulaufen. Beide Dienste laufen deshalb mit
 `restart: unless-stopped`, damit Docker sie danach automatisch neu startet;
 ohne diese Policy würde ein Crash den Dienst dauerhaft unerreichbar lassen.
 
+## Herunterfahren
+
+`SIGTERM` und `SIGINT` schließen in der API den HTTP-Server und anschließend
+das SQLite-Handle und beenden den Prozess. Offene Keep-Alive-Verbindungen –
+vor allem die des Next.js-Servers – werden dabei über
+`server.closeIdleConnections()` freigegeben, laufende Requests dürfen zu Ende
+laufen. Vorher wurde das Signal nur geloggt, der Prozess lief weiter und
+Docker beendete ihn nach zehn Sekunden mit `SIGKILL`, mitten in einem
+möglichen Schreibvorgang. Greift der Abbau nicht innerhalb von 15 Sekunden,
+beendet sich der Prozess selbst mit Exit-Code 1; `stop_grace_period: 20s` in
+beiden Compose-Dateien liegt bewusst darüber.
+
+Die Startbefehle in `compose.yaml` enden mit `exec node …`. Ohne das `exec`
+bleibt `sh` der Vordergrundprozess, und `SIGTERM` erreicht Node nie.
+
 ## Voraussetzungen für ein späteres Produktionssetup
 
 Vor einer produktiven Installation werden mindestens benötigt:
 
-- reproduzierbare Produktionsimages und ein Next.js-Produktionsstartskript
 - TLS-Termination und Reverse Proxy
 - Authentifizierung, Autorisierung und Benutzer-/Rollenmodell
 - definierte Secrets- und Konfigurationsverwaltung

drizzle.config.js

@@ -1,11 +0,0 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-const drizzle_kit_1 = require("drizzle-kit");
-exports.default = (0, drizzle_kit_1.defineConfig)({
-    dialect: "sqlite",
-    schema: "./src/db/schema/*.ts",
-    out: "./src/db/migrations",
-    dbCredentials: {
-        url: "./data/leistungsbilanz.db",
-    },
-});

dynamo/01_check_model_identity.py

@@ -0,0 +1,385 @@
+"""Read-only Revit 2026 model-identity diagnostics for a Dynamo Python node.
+
+Optional Dynamo input:
+    IN[0]: output directory or complete .json file path
+
+The script intentionally performs no Revit transaction and changes no model
+data. OUT contains a compact summary plus the complete report.
+"""
+
+import datetime
+import json
+import os
+import platform
+import sys
+import tempfile
+import traceback
+
+import clr
+
+clr.AddReference("RevitAPI")
+clr.AddReference("RevitServices")
+
+from Autodesk.Revit.DB import ModelPathUtils, StorageType  # noqa: E402
+from RevitServices.Persistence import DocumentManager  # noqa: E402
+
+
+CHECKED_PARAMETER_NAMES = ("LB_ModelId", "LB_ProjectId")
+
+
+def safe_text(value):
+    if value is None:
+        return None
+    try:
+        return str(value)
+    except Exception:
+        return None
+
+
+def element_id_text(element_id):
+    if element_id is None:
+        return None
+    try:
+        return str(element_id.Value)
+    except Exception:
+        try:
+            return str(element_id.IntegerValue)
+        except Exception:
+            return safe_text(element_id)
+
+
+def forge_type_id_text(value):
+    if value is None:
+        return None
+    try:
+        return value.TypeId
+    except Exception:
+        return safe_text(value)
+
+
+def parameter_value(parameter):
+    result = {
+        "hasValue": False,
+        "raw": None,
+        "display": None,
+    }
+    try:
+        result["hasValue"] = bool(parameter.HasValue)
+    except Exception:
+        pass
+
+    try:
+        storage_type = parameter.StorageType
+        if storage_type == StorageType.String:
+            result["raw"] = parameter.AsString()
+        elif storage_type == StorageType.Integer:
+            result["raw"] = int(parameter.AsInteger())
+        elif storage_type == StorageType.Double:
+            result["raw"] = float(parameter.AsDouble())
+        elif storage_type == StorageType.ElementId:
+            result["raw"] = element_id_text(parameter.AsElementId())
+    except Exception as error:
+        result["readError"] = safe_text(error)
+
+    try:
+        result["display"] = parameter.AsValueString()
+    except Exception:
+        pass
+    return result
+
+
+def describe_parameter(parameter):
+    definition = None
+    try:
+        definition = parameter.Definition
+    except Exception:
+        pass
+
+    name = None
+    if definition is not None:
+        try:
+            name = definition.Name
+        except Exception:
+            pass
+
+    is_shared = False
+    try:
+        is_shared = bool(parameter.IsShared)
+    except Exception:
+        pass
+
+    shared_guid = None
+    if is_shared:
+        try:
+            shared_guid = str(parameter.GUID)
+        except Exception:
+            pass
+
+    data_type = None
+    group_type = None
+    if definition is not None:
+        try:
+            data_type = forge_type_id_text(definition.GetDataType())
+        except Exception:
+            pass
+        try:
+            group_type = forge_type_id_text(definition.GetGroupTypeId())
+        except Exception:
+            pass
+
+    unit_type = None
+    try:
+        unit_type = forge_type_id_text(parameter.GetUnitTypeId())
+    except Exception:
+        pass
+
+    try:
+        storage_type = str(parameter.StorageType)
+    except Exception:
+        storage_type = None
+
+    try:
+        is_read_only = bool(parameter.IsReadOnly)
+    except Exception:
+        is_read_only = None
+
+    try:
+        user_modifiable = bool(parameter.UserModifiable)
+    except Exception:
+        user_modifiable = None
+
+    return {
+        "name": name,
+        "parameterId": element_id_text(getattr(parameter, "Id", None)),
+        "isShared": is_shared,
+        "sharedGuid": shared_guid,
+        "storageType": storage_type,
+        "dataTypeId": data_type,
+        "groupTypeId": group_type,
+        "unitTypeId": unit_type,
+        "isReadOnly": is_read_only,
+        "userModifiable": user_modifiable,
+        "value": parameter_value(parameter),
+    }
+
+
+def sorted_parameters(element):
+    parameters = []
+    try:
+        parameters = [describe_parameter(parameter) for parameter in element.Parameters]
+    except Exception:
+        return []
+    return sorted(
+        parameters,
+        key=lambda parameter: (
+            (parameter.get("name") or "").casefold(),
+            parameter.get("parameterId") or "",
+        ),
+    )
+
+
+def named_parameter_occurrences(element, parameter_name):
+    result = []
+    try:
+        parameters = element.GetParameters(parameter_name)
+        if parameters is not None:
+            result = [describe_parameter(parameter) for parameter in parameters]
+    except Exception:
+        parameter = None
+        try:
+            parameter = element.LookupParameter(parameter_name)
+        except Exception:
+            pass
+        if parameter is not None:
+            result = [describe_parameter(parameter)]
+    return result
+
+
+def loaded_assembly_versions():
+    result = {}
+    try:
+        from System import AppDomain
+
+        for assembly in AppDomain.CurrentDomain.GetAssemblies():
+            try:
+                name = assembly.GetName()
+                simple_name = str(name.Name)
+                if simple_name in (
+                    "DynamoCore",
+                    "DynamoCoreWpf",
+                    "DynamoRevitDS",
+                    "RevitAPI",
+                    "RevitServices",
+                ):
+                    result[simple_name] = str(name.Version)
+            except Exception:
+                continue
+    except Exception:
+        pass
+    return dict(sorted(result.items()))
+
+
+def get_cloud_identity(document):
+    result = {"isModelInCloud": False}
+    try:
+        result["isModelInCloud"] = bool(document.IsModelInCloud)
+    except Exception:
+        return result
+    if not result["isModelInCloud"]:
+        return result
+
+    try:
+        model_path = document.GetCloudModelPath()
+        result["userVisiblePath"] = ModelPathUtils.ConvertModelPathToUserVisiblePath(
+            model_path
+        )
+        for property_name, output_name in (
+            ("GetProjectGUID", "projectGuid"),
+            ("GetModelGUID", "modelGuid"),
+        ):
+            try:
+                result[output_name] = str(getattr(model_path, property_name)())
+            except Exception:
+                pass
+    except Exception as error:
+        result["readError"] = safe_text(error)
+    return result
+
+
+def get_worksharing_identity(document):
+    result = {"isWorkshared": False}
+    try:
+        result["isWorkshared"] = bool(document.IsWorkshared)
+    except Exception:
+        return result
+    if not result["isWorkshared"]:
+        return result
+
+    try:
+        model_path = document.GetWorksharingCentralModelPath()
+        result["centralModelPath"] = ModelPathUtils.ConvertModelPathToUserVisiblePath(
+            model_path
+        )
+    except Exception as error:
+        result["readError"] = safe_text(error)
+    return result
+
+
+def resolve_output_path(configured_path, report_name):
+    timestamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
+    default_directory = os.path.join(tempfile.gettempdir(), "leistungsbilanz-dynamo")
+    raw_path = safe_text(configured_path)
+    if raw_path is None or not raw_path.strip():
+        directory = default_directory
+        file_path = os.path.join(directory, report_name + "-" + timestamp + ".json")
+    else:
+        expanded = os.path.abspath(os.path.expandvars(os.path.expanduser(raw_path.strip())))
+        if expanded.lower().endswith(".json"):
+            file_path = expanded
+            directory = os.path.dirname(file_path)
+        else:
+            directory = expanded
+            file_path = os.path.join(directory, report_name + "-" + timestamp + ".json")
+    if not directory:
+        directory = os.getcwd()
+    if not os.path.isdir(directory):
+        os.makedirs(directory)
+    return file_path
+
+
+def write_json(file_path, payload):
+    temporary_path = file_path + ".tmp"
+    with open(temporary_path, "w", encoding="utf-8", newline="\n") as output:
+        json.dump(payload, output, ensure_ascii=False, indent=2, sort_keys=True)
+        output.write("\n")
+    os.replace(temporary_path, file_path)
+
+
+def get_input(index, default=None):
+    values = globals().get("IN", [])
+    try:
+        value = values[index]
+        return default if value is None else value
+    except Exception:
+        return default
+
+
+def build_report():
+    document = DocumentManager.Instance.CurrentDBDocument
+    if document is None:
+        raise RuntimeError("No active Revit document is available.")
+
+    project_information = document.ProjectInformation
+    if project_information is None:
+        raise RuntimeError("The active document has no Project Information element.")
+
+    application = document.Application
+    checked_parameters = {
+        name: named_parameter_occurrences(project_information, name)
+        for name in CHECKED_PARAMETER_NAMES
+    }
+    warnings = []
+    for name in CHECKED_PARAMETER_NAMES:
+        occurrences = checked_parameters[name]
+        populated = [
+            parameter
+            for parameter in occurrences
+            if parameter.get("value", {}).get("raw") not in (None, "")
+        ]
+        if not occurrences:
+            warnings.append(name + " is not bound to Project Information.")
+        elif not populated:
+            warnings.append(name + " exists but has no value on Project Information.")
+        elif len(occurrences) > 1:
+            warnings.append(name + " occurs more than once; use a shared-parameter GUID later.")
+
+    return {
+        "reportSchemaVersion": 1,
+        "generatedAt": datetime.datetime.now(datetime.timezone.utc).isoformat(),
+        "readOnly": True,
+        "environment": {
+            "revitVersionNumber": safe_text(getattr(application, "VersionNumber", None)),
+            "revitVersionName": safe_text(getattr(application, "VersionName", None)),
+            "revitSubVersionNumber": safe_text(
+                getattr(application, "SubVersionNumber", None)
+            ),
+            "pythonImplementation": safe_text(getattr(sys.implementation, "name", None)),
+            "pythonVersion": platform.python_version(),
+            "assemblies": loaded_assembly_versions(),
+        },
+        "document": {
+            "title": safe_text(document.Title),
+            "pathName": safe_text(document.PathName),
+            "isFamilyDocument": bool(document.IsFamilyDocument),
+            "cloud": get_cloud_identity(document),
+            "worksharing": get_worksharing_identity(document),
+        },
+        "modelIdentityCandidates": {
+            "projectInformationUniqueId": safe_text(project_information.UniqueId),
+            "projectInformationElementId": element_id_text(project_information.Id),
+            "checkedProjectParameters": checked_parameters,
+        },
+        "projectInformationParameters": sorted_parameters(project_information),
+        "warnings": warnings,
+    }
+
+
+try:
+    report = build_report()
+    output_path = resolve_output_path(get_input(0), "model-identity")
+    write_json(output_path, report)
+    OUT = {
+        "ok": True,
+        "filePath": output_path,
+        "projectInformationUniqueId": report["modelIdentityCandidates"][
+            "projectInformationUniqueId"
+        ],
+        "warnings": report["warnings"],
+        "report": report,
+    }
+except Exception as error:
+    OUT = {
+        "ok": False,
+        "error": safe_text(error),
+        "traceback": traceback.format_exc(),
+    }

dynamo/02_export_electrical_fixture_parameter_inventory.py

@@ -0,0 +1,517 @@
+"""Export all Electrical Fixtures instance/type parameters from Revit 2026.
+
+Optional Dynamo inputs:
+    IN[0]: output directory or complete .json file path
+    IN[1]: include empty parameters (default True)
+    IN[2]: maximum aggregated sample values (default 5)
+
+The script is read-only and performs no Revit transaction.
+"""
+
+import datetime
+import json
+import os
+import platform
+import sys
+import tempfile
+import traceback
+
+import clr
+
+clr.AddReference("RevitAPI")
+clr.AddReference("RevitServices")
+
+from Autodesk.Revit.DB import (  # noqa: E402
+    BuiltInCategory,
+    FilteredElementCollector,
+    ModelPathUtils,
+    StorageType,
+)
+from RevitServices.Persistence import DocumentManager  # noqa: E402
+
+
+def safe_text(value):
+    if value is None:
+        return None
+    try:
+        return str(value)
+    except Exception:
+        return None
+
+
+def element_id_text(element_id):
+    if element_id is None:
+        return None
+    try:
+        return str(element_id.Value)
+    except Exception:
+        try:
+            return str(element_id.IntegerValue)
+        except Exception:
+            return safe_text(element_id)
+
+
+def forge_type_id_text(value):
+    if value is None:
+        return None
+    try:
+        return value.TypeId
+    except Exception:
+        return safe_text(value)
+
+
+def parameter_value(parameter):
+    result = {"hasValue": False, "raw": None, "display": None}
+    try:
+        result["hasValue"] = bool(parameter.HasValue)
+    except Exception:
+        pass
+
+    try:
+        storage_type = parameter.StorageType
+        if storage_type == StorageType.String:
+            result["raw"] = parameter.AsString()
+        elif storage_type == StorageType.Integer:
+            result["raw"] = int(parameter.AsInteger())
+        elif storage_type == StorageType.Double:
+            result["raw"] = float(parameter.AsDouble())
+        elif storage_type == StorageType.ElementId:
+            result["raw"] = element_id_text(parameter.AsElementId())
+    except Exception as error:
+        result["readError"] = safe_text(error)
+
+    try:
+        result["display"] = parameter.AsValueString()
+    except Exception:
+        pass
+    return result
+
+
+def describe_parameter(parameter, scope):
+    definition = None
+    try:
+        definition = parameter.Definition
+    except Exception:
+        pass
+
+    name = None
+    data_type = None
+    group_type = None
+    if definition is not None:
+        try:
+            name = definition.Name
+        except Exception:
+            pass
+        try:
+            data_type = forge_type_id_text(definition.GetDataType())
+        except Exception:
+            pass
+        try:
+            group_type = forge_type_id_text(definition.GetGroupTypeId())
+        except Exception:
+            pass
+
+    is_shared = False
+    try:
+        is_shared = bool(parameter.IsShared)
+    except Exception:
+        pass
+
+    shared_guid = None
+    if is_shared:
+        try:
+            shared_guid = str(parameter.GUID)
+        except Exception:
+            pass
+
+    unit_type = None
+    try:
+        unit_type = forge_type_id_text(parameter.GetUnitTypeId())
+    except Exception:
+        pass
+
+    try:
+        storage_type = str(parameter.StorageType)
+    except Exception:
+        storage_type = None
+
+    try:
+        is_read_only = bool(parameter.IsReadOnly)
+    except Exception:
+        is_read_only = None
+
+    try:
+        user_modifiable = bool(parameter.UserModifiable)
+    except Exception:
+        user_modifiable = None
+
+    return {
+        "scope": scope,
+        "name": name,
+        "parameterId": element_id_text(getattr(parameter, "Id", None)),
+        "isShared": is_shared,
+        "sharedGuid": shared_guid,
+        "storageType": storage_type,
+        "dataTypeId": data_type,
+        "groupTypeId": group_type,
+        "unitTypeId": unit_type,
+        "isReadOnly": is_read_only,
+        "userModifiable": user_modifiable,
+        "value": parameter_value(parameter),
+    }
+
+
+def has_meaningful_value(parameter_description):
+    value = parameter_description.get("value", {})
+    return bool(value.get("hasValue")) or value.get("raw") not in (None, "") or value.get(
+        "display"
+    ) not in (None, "")
+
+
+def read_parameters(element, scope, include_empty):
+    result = []
+    try:
+        for parameter in element.Parameters:
+            description = describe_parameter(parameter, scope)
+            if include_empty or has_meaningful_value(description):
+                result.append(description)
+    except Exception as error:
+        return [], [safe_text(error)]
+    result.sort(
+        key=lambda parameter: (
+            (parameter.get("name") or "").casefold(),
+            parameter.get("parameterId") or "",
+        )
+    )
+    return result, []
+
+
+def read_space(element, document):
+    try:
+        space = element.Space
+    except Exception as error:
+        return None, safe_text(error)
+    if space is None:
+        return None, None
+
+    level_name = None
+    try:
+        level = document.GetElement(space.LevelId)
+        level_name = None if level is None else safe_text(level.Name)
+    except Exception:
+        pass
+
+    return {
+        "uniqueId": safe_text(space.UniqueId),
+        "elementId": element_id_text(space.Id),
+        "number": safe_text(getattr(space, "Number", None)),
+        "name": safe_text(getattr(space, "Name", None)),
+        "levelName": level_name,
+    }, None
+
+
+def read_family_identity(element, document):
+    symbol = None
+    try:
+        symbol = element.Symbol
+    except Exception:
+        try:
+            symbol = document.GetElement(element.GetTypeId())
+        except Exception:
+            pass
+
+    family_name = None
+    type_name = None
+    type_unique_id = None
+    type_element_id = None
+    if symbol is not None:
+        try:
+            family_name = safe_text(symbol.Family.Name)
+        except Exception:
+            family_name = safe_text(getattr(symbol, "FamilyName", None))
+        type_name = safe_text(getattr(symbol, "Name", None))
+        type_unique_id = safe_text(getattr(symbol, "UniqueId", None))
+        type_element_id = element_id_text(getattr(symbol, "Id", None))
+
+    return {
+        "familyName": family_name,
+        "typeName": type_name,
+        "typeUniqueId": type_unique_id,
+        "typeElementId": type_element_id,
+    }, symbol
+
+
+def parameter_inventory_key(parameter):
+    stable_id = parameter.get("sharedGuid") or parameter.get("parameterId") or ""
+    return "|".join(
+        (
+            parameter.get("scope") or "",
+            stable_id,
+            parameter.get("name") or "",
+            parameter.get("dataTypeId") or "",
+        )
+    )
+
+
+def sample_value_key(value):
+    return json.dumps(value, ensure_ascii=False, sort_keys=True, separators=(",", ":"))
+
+
+def add_to_inventory(inventory, parameter, max_samples):
+    key = parameter_inventory_key(parameter)
+    entry = inventory.get(key)
+    if entry is None:
+        entry = {
+            "scope": parameter.get("scope"),
+            "name": parameter.get("name"),
+            "parameterId": parameter.get("parameterId"),
+            "isShared": parameter.get("isShared"),
+            "sharedGuid": parameter.get("sharedGuid"),
+            "storageType": parameter.get("storageType"),
+            "dataTypeId": parameter.get("dataTypeId"),
+            "groupTypeId": parameter.get("groupTypeId"),
+            "unitTypeId": parameter.get("unitTypeId"),
+            "occurrenceCount": 0,
+            "populatedCount": 0,
+            "sampleValues": [],
+            "_sampleKeys": set(),
+        }
+        inventory[key] = entry
+    entry["occurrenceCount"] += 1
+    if has_meaningful_value(parameter):
+        entry["populatedCount"] += 1
+    value = parameter.get("value")
+    value_key = sample_value_key(value)
+    if len(entry["sampleValues"]) < max_samples and value_key not in entry["_sampleKeys"]:
+        entry["_sampleKeys"].add(value_key)
+        entry["sampleValues"].append(value)
+
+
+def finalize_inventory(inventory):
+    result = []
+    for entry in inventory.values():
+        clean_entry = dict(entry)
+        clean_entry.pop("_sampleKeys", None)
+        result.append(clean_entry)
+    return sorted(
+        result,
+        key=lambda entry: (
+            entry.get("scope") or "",
+            (entry.get("name") or "").casefold(),
+            entry.get("sharedGuid") or entry.get("parameterId") or "",
+        ),
+    )
+
+
+def loaded_assembly_versions():
+    result = {}
+    try:
+        from System import AppDomain
+
+        for assembly in AppDomain.CurrentDomain.GetAssemblies():
+            try:
+                name = assembly.GetName()
+                simple_name = str(name.Name)
+                if simple_name in (
+                    "DynamoCore",
+                    "DynamoCoreWpf",
+                    "DynamoRevitDS",
+                    "RevitAPI",
+                    "RevitServices",
+                ):
+                    result[simple_name] = str(name.Version)
+            except Exception:
+                continue
+    except Exception:
+        pass
+    return dict(sorted(result.items()))
+
+
+def resolve_output_path(configured_path):
+    timestamp = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
+    default_directory = os.path.join(tempfile.gettempdir(), "leistungsbilanz-dynamo")
+    raw_path = safe_text(configured_path)
+    if raw_path is None or not raw_path.strip():
+        directory = default_directory
+        file_path = os.path.join(
+            directory, "electrical-fixture-parameters-" + timestamp + ".json"
+        )
+    else:
+        expanded = os.path.abspath(os.path.expandvars(os.path.expanduser(raw_path.strip())))
+        if expanded.lower().endswith(".json"):
+            file_path = expanded
+            directory = os.path.dirname(file_path)
+        else:
+            directory = expanded
+            file_path = os.path.join(
+                directory, "electrical-fixture-parameters-" + timestamp + ".json"
+            )
+    if not directory:
+        directory = os.getcwd()
+    if not os.path.isdir(directory):
+        os.makedirs(directory)
+    return file_path
+
+
+def write_json(file_path, payload):
+    temporary_path = file_path + ".tmp"
+    with open(temporary_path, "w", encoding="utf-8", newline="\n") as output:
+        json.dump(payload, output, ensure_ascii=False, indent=2, sort_keys=True)
+        output.write("\n")
+    os.replace(temporary_path, file_path)
+
+
+def get_input(index, default=None):
+    values = globals().get("IN", [])
+    try:
+        value = values[index]
+        return default if value is None else value
+    except Exception:
+        return default
+
+
+def build_report(include_empty, max_samples):
+    document = DocumentManager.Instance.CurrentDBDocument
+    if document is None:
+        raise RuntimeError("No active Revit document is available.")
+    if document.IsFamilyDocument:
+        raise RuntimeError("Open a Revit project document, not a family document.")
+
+    application = document.Application
+    collector = (
+        FilteredElementCollector(document)
+        .OfCategory(BuiltInCategory.OST_ElectricalFixtures)
+        .WhereElementIsNotElementType()
+    )
+    source_elements = list(collector)
+    source_elements.sort(key=lambda element: safe_text(element.UniqueId) or "")
+
+    elements = []
+    types_by_unique_id = {}
+    inventory = {}
+    errors = []
+    elements_without_space = 0
+
+    for element in source_elements:
+        element_errors = []
+        try:
+            family_identity, symbol = read_family_identity(element, document)
+            instance_parameters, parameter_errors = read_parameters(
+                element, "instance", include_empty
+            )
+            element_errors.extend(parameter_errors)
+            for parameter in instance_parameters:
+                add_to_inventory(inventory, parameter, max_samples)
+
+            type_unique_id = family_identity.get("typeUniqueId")
+            if symbol is not None and type_unique_id and type_unique_id not in types_by_unique_id:
+                type_parameters, type_errors = read_parameters(symbol, "type", include_empty)
+                element_errors.extend(type_errors)
+                for parameter in type_parameters:
+                    add_to_inventory(inventory, parameter, max_samples)
+                types_by_unique_id[type_unique_id] = {
+                    **family_identity,
+                    "parameters": type_parameters,
+                }
+
+            space, space_error = read_space(element, document)
+            if space_error:
+                element_errors.append("MEP Space: " + space_error)
+            if space is None:
+                elements_without_space += 1
+
+            elements.append(
+                {
+                    "uniqueId": safe_text(element.UniqueId),
+                    "elementId": element_id_text(element.Id),
+                    "categoryName": safe_text(
+                        None if element.Category is None else element.Category.Name
+                    ),
+                    "family": family_identity,
+                    "space": space,
+                    "instanceParameters": instance_parameters,
+                    "warnings": element_errors,
+                }
+            )
+        except Exception as error:
+            errors.append(
+                {
+                    "uniqueId": safe_text(getattr(element, "UniqueId", None)),
+                    "elementId": element_id_text(getattr(element, "Id", None)),
+                    "error": safe_text(error),
+                }
+            )
+
+    return {
+        "reportSchemaVersion": 1,
+        "generatedAt": datetime.datetime.now(datetime.timezone.utc).isoformat(),
+        "readOnly": True,
+        "complete": len(errors) == 0,
+        "scope": {
+            "builtInCategory": "OST_ElectricalFixtures",
+            "wholeDocument": True,
+            "elementTypesExcluded": True,
+            "includeEmptyParameters": include_empty,
+        },
+        "environment": {
+            "revitVersionNumber": safe_text(getattr(application, "VersionNumber", None)),
+            "revitVersionName": safe_text(getattr(application, "VersionName", None)),
+            "revitSubVersionNumber": safe_text(
+                getattr(application, "SubVersionNumber", None)
+            ),
+            "pythonImplementation": safe_text(getattr(sys.implementation, "name", None)),
+            "pythonVersion": platform.python_version(),
+            "assemblies": loaded_assembly_versions(),
+        },
+        "document": {
+            "title": safe_text(document.Title),
+            "pathName": safe_text(document.PathName),
+            "projectInformationUniqueId": safe_text(document.ProjectInformation.UniqueId),
+        },
+        "summary": {
+            "elementCount": len(source_elements),
+            "exportedElementCount": len(elements),
+            "typeCount": len(types_by_unique_id),
+            "parameterDefinitionCount": len(inventory),
+            "elementsWithoutMepSpace": elements_without_space,
+            "elementErrorCount": len(errors),
+        },
+        "parameterInventory": finalize_inventory(inventory),
+        "types": sorted(
+            types_by_unique_id.values(),
+            key=lambda entry: (
+                (entry.get("familyName") or "").casefold(),
+                (entry.get("typeName") or "").casefold(),
+                entry.get("typeUniqueId") or "",
+            ),
+        ),
+        "elements": elements,
+        "errors": errors,
+    }
+
+
+try:
+    include_empty_input = get_input(1, True)
+    include_empty = bool(include_empty_input)
+    try:
+        max_samples = int(get_input(2, 5))
+    except Exception:
+        max_samples = 5
+    max_samples = max(0, min(max_samples, 50))
+
+    report = build_report(include_empty, max_samples)
+    output_path = resolve_output_path(get_input(0))
+    write_json(output_path, report)
+    OUT = {
+        "ok": True,
+        "filePath": output_path,
+        "complete": report["complete"],
+        "summary": report["summary"],
+        "errors": report["errors"],
+    }
+except Exception as error:
+    OUT = {
+        "ok": False,
+        "error": safe_text(error),
+        "traceback": traceback.format_exc(),
+    }

dynamo/README.md

@@ -0,0 +1,69 @@
+# Revit 2026 / Dynamo diagnostics
+
+This directory contains self-contained Python scripts for a Dynamo **Python
+Script** node. They use only Dynamo's built-in Revit integration, the Revit API
+and the Python standard library. No Dynamo package is required.
+
+The scripts are read-only. They do not start a Revit transaction and do not
+change the open model.
+
+## Python engine
+
+Use the built-in `CPython3` engine in Revit 2026. Autodesk ships Dynamo with
+Revit; optional PythonNet3 packages are not required by these diagnostics.
+
+## 01 - Check model identity
+
+File: `01_check_model_identity.py`
+
+The script reports:
+
+- Revit, Dynamo and Python versions;
+- `ProjectInformation.UniqueId` as a native model-identity candidate;
+- all occurrences and values of `LB_ModelId` and `LB_ProjectId` on Project
+  Information;
+- all Project Information parameters;
+- optional cloud/worksharing identity information when the API exposes it.
+
+Input `IN[0]` is optional. It may be either an output directory or a complete
+`.json` file path. With no input, the report is written below the current
+Windows temporary directory in `leistungsbilanz-dynamo`.
+
+## 02 - Inventory Electrical Fixtures parameters
+
+File: `02_export_electrical_fixture_parameter_inventory.py`
+
+The script reads every instance of
+`BuiltInCategory.OST_ElectricalFixtures` in the complete current document. It
+exports:
+
+- element, family, type and MEP Space identities;
+- every instance parameter and value;
+- every unique family-type parameter and value;
+- an aggregated parameter inventory with occurrence counts and sample values;
+- per-element warnings instead of aborting at the first unreadable element.
+
+Inputs:
+
+- `IN[0]` (optional): output directory or complete `.json` path;
+- `IN[1]` (optional): include empty parameters, default `true`;
+- `IN[2]` (optional): maximum sample values per aggregated parameter, default
+  `5`.
+
+The default output location is again the Windows temporary directory. The
+generated report can contain model paths and project-specific parameter values;
+review it before sharing or committing it.
+
+## Running a script
+
+1. Open the target model in Revit 2026.
+2. Open Dynamo from **Manage > Visual Programming > Dynamo**.
+3. Create a graph and add a **Python Script** node.
+4. Select the `CPython3` engine for the node.
+5. Copy the complete content of the desired `.py` file into the node.
+6. Optionally connect a String node containing the output path to `IN[0]`.
+7. Run the graph and inspect `OUT` for status, counts and the generated path.
+
+For the first test, run `01_check_model_identity.py` in the Revit main model.
+Then run the parameter inventory. Keep both generated JSON files so their
+structure can be checked before the production snapshot DTO is finalized.

index.html

@@ -1,17 +0,0 @@
-<!doctype html>
-<html lang="de">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Leistungsbilanz API</title>
-    <link rel="stylesheet" href="./styles.css" />
-  </head>
-  <body>
-    <main class="info">
-      <h1>Leistungsbilanz Backend</h1>
-      <p>Der aktuelle Stand laeuft als TypeScript Node/SQLite API.</p>
-      <p>Serverstart: <code>npm run dev</code></p>
-      <p>Healthcheck: <code>GET /health</code></p>
-    </main>
-  </body>
-</html>

package-lock.json

@@ -22,12 +22,15 @@
       "devDependencies": {
         "@types/better-sqlite3": "^7.6.13",
         "@types/express": "^5.0.6",
-        "@types/node": "^25.6.0",
+        "@types/node": "^24.10.1",
         "@types/react": "^19.2.14",
         "@types/react-dom": "^19.2.3",
         "drizzle-kit": "^0.31.10",
         "tsx": "^4.21.0",
         "typescript": "^6.0.3"
+      },
+      "engines": {
+        "node": "24.x"
       }
     },
     "node_modules/@drizzle-team/brocli": {
@@ -1514,12 +1517,13 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "25.6.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
-      "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
+      "version": "24.13.3",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.3.tgz",
+      "integrity": "sha512-Dh8vAsV36ig5wa9OX4pXvMc9D3Veibfw2wix0CUwYODLD8nkj9UsLjASr49nPg+2eKzxhBV+v7L8pXvT4e639Q==",
       "devOptional": true,
+      "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.19.0"
+        "undici-types": "~7.18.0"
       }
     },
     "node_modules/@types/qs": {
@@ -3688,10 +3692,11 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.19.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
-      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
-      "devOptional": true
+      "version": "7.18.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "devOptional": true,
+      "license": "MIT"
     },
     "node_modules/unpipe": {
       "version": "1.0.0",

package.json

@@ -3,6 +3,9 @@
   "version": "1.0.0",
   "description": "Spreadsheet-style circuit list editor for electrical distribution planning",
   "main": "dist/server/index.js",
+  "engines": {
+    "node": "24.x"
+  },
   "scripts": {
     "dev": "npm run dev:api",
     "dev:api": "tsx watch src/server/index.ts",
@@ -10,6 +13,9 @@
     "docker:up": "docker compose up --build --detach",
     "docker:down": "docker compose down",
     "docker:logs": "docker compose logs --follow",
+    "docker:dev:up": "docker compose -f compose.dev.yaml up --build --detach",
+    "docker:dev:down": "docker compose -f compose.dev.yaml down",
+    "docker:dev:logs": "docker compose -f compose.dev.yaml logs --follow",
     "build": "npm run build:api",
     "build:api": "tsc -p tsconfig.json",
     "build:web": "next build",
@@ -40,7 +46,7 @@
   "devDependencies": {
     "@types/better-sqlite3": "^7.6.13",
     "@types/express": "^5.0.6",
-    "@types/node": "^25.6.0",
+    "@types/node": "^24.10.1",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "drizzle-kit": "^0.31.10",

scripts/docker-start.sh

@@ -1,16 +0,0 @@
-#!/bin/sh
-set -e
-
-echo "Running migrations..."
-node scripts/run-migrations.js
-
-echo "Starting API server on :3000..."
-node dist/server/index.js &
-
-echo "Waiting for API..."
-until node -e "require('http').get('http://localhost:3000/health', r => process.exit(r.statusCode===200?0:1)).on('error',()=>process.exit(1))" 2>/dev/null; do
-  sleep 1
-done
-
-echo "Starting Next.js on :3001..."
-exec node_modules/.bin/next start -p 3001

src/app/globals.css

@@ -487,6 +487,54 @@ a.kpi:hover {
   opacity: 0.45;
 }
 
+/* Icon buttons (circuit list editor toolbar, group and row actions) */
+.icon-button {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.35rem;
+  line-height: 1.2;
+  cursor: pointer;
+  transition: color 0.12s ease, border-color 0.12s ease, background-color 0.12s ease;
+}
+
+.icon-button svg {
+  flex: none;
+}
+
+.icon-button:disabled {
+  cursor: not-allowed;
+}
+
+.icon-button:not(:disabled):hover {
+  border-color: var(--accent-blue);
+  color: var(--accent-blue);
+}
+
+.icon-button-danger:not(:disabled):hover {
+  border-color: var(--color-danger);
+  background: var(--color-danger-bg);
+  color: var(--color-danger);
+}
+
+.editor-toolbar .project-device-drawer-toggle:not(:disabled):hover {
+  color: #fff;
+  filter: brightness(1.08);
+}
+
+.icon-button-text {
+  font-size: 0.7rem;
+  font-weight: 700;
+  letter-spacing: 0.02em;
+}
+
+.icon-button-separator {
+  align-self: stretch;
+  width: 1px;
+  margin: 0.1rem 0.15rem;
+  background: var(--panel-border-strong);
+}
+
 .editor-toolbar .project-device-drawer-toggle {
   border-color: var(--accent-blue);
   background: var(--accent-blue);
@@ -1153,7 +1201,20 @@ a.kpi:hover {
 
 .tree-grid .section-actions {
   display: flex;
-  gap: 0.35rem;
+  align-items: center;
+  gap: 0.25rem;
+}
+
+.tree-grid .section-actions .icon-button,
+.tree-grid .action-cell .icon-button {
+  min-width: 1.75rem;
+  min-height: 1.6rem;
+  padding: 0.15rem 0.3rem;
+}
+
+.tree-grid .section-actions .icon-button:disabled,
+.tree-grid .action-cell .icon-button:disabled {
+  opacity: 0.35;
 }
 
 .tree-grid .section-actions button {
@@ -1265,7 +1326,7 @@ a.kpi:hover {
 
 .tree-grid .action-cell {
   display: flex;
-  gap: 0.3rem;
+  gap: 0.25rem;
 }
 
 .tree-grid .action-cell button {

src/app/web-health/route.ts

@@ -0,0 +1,10 @@
+import { NextResponse } from "next/server";
+
+// Liveness probe for the web container itself. The "/health" path is
+// rewritten to the API in next.config.mjs, so it cannot answer for this
+// process. Kept as a route handler so a probe does not render a page.
+export const dynamic = "force-dynamic";
+
+export function GET() {
+  return NextResponse.json({ ok: true });
+}

src/db/client.ts

@@ -7,3 +7,10 @@ const defaultDatabaseContext = createDatabaseContext(
 
 export const db = defaultDatabaseContext.db;
 
+/**
+ * Schliesst das SQLite-Handle des Prozesses. Nur beim Herunterfahren
+ * aufrufen: danach schlaegt jede Abfrage ueber {@link db} fehl.
+ */
+export function closeDefaultDatabase(): void {
+  defaultDatabaseContext.close();
+}

src/db/repositories/project-device-row-sync-project-command.repository.ts

@@ -14,6 +14,7 @@ import type { AppDatabase } from "../database-context.js";
 import { circuitDeviceRows } from "../schema/circuit-device-rows.js";
 import { circuitLists } from "../schema/circuit-lists.js";
 import { circuits } from "../schema/circuits.js";
+import { externalModelObjects } from "../schema/external-model-objects.js";
 import { projectDevices } from "../schema/project-devices.js";
 import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
 import { updateDerivedCircuitVoltage } from "./project-voltage.persistence.js";
@@ -119,9 +120,32 @@ export class ProjectDeviceRowSyncProjectCommandRepository
     );
 
     for (const assignment of input.command.payload.rows) {
+      const values: typeof assignment.target & {
+        manualQuantity?: number;
+      } = { ...assignment.target };
+      if (assignment.target.quantity !== assignment.expected.quantity) {
+        const externalTotal = tx
+          .select({ planningValues: externalModelObjects.planningValues })
+          .from(externalModelObjects)
+          .where(
+            eq(externalModelObjects.circuitDeviceRowId, assignment.rowId)
+          )
+          .all()
+          .reduce(
+            (sum, object) => sum + object.planningValues.effectiveQuantity,
+            0
+          );
+        const manualQuantity = assignment.target.quantity - externalTotal;
+        if (manualQuantity < 0) {
+          throw new Error(
+            "Synchronized quantity is below the total quantity of linked external objects."
+          );
+        }
+        values.manualQuantity = manualQuantity;
+      }
       const updated = tx
         .update(circuitDeviceRows)
-        .set(assignment.target)
+        .set(values)
         .where(eq(circuitDeviceRows.id, assignment.rowId))
         .run();
       if (updated.changes !== 1) {

src/frontend/components/circuit-tree-editor.tsx

@@ -1,6 +1,28 @@
 "use client";
 
 import { DragEvent, KeyboardEvent, useEffect, useMemo, useRef, useState } from "react";
+import {
+  ArrowDown,
+  ArrowDown01,
+  ArrowUp,
+  Check,
+  Columns3,
+  FilterX,
+  FolderPlus,
+  ListOrdered,
+  ListPlus,
+  ListX,
+  PackagePlus,
+  PanelRightClose,
+  PanelRightOpen,
+  Pencil,
+  Plus,
+  Redo2,
+  ShieldPlus,
+  Trash2,
+  Undo2,
+} from "lucide-react";
+import { IconButton, IconButtonSeparator } from "./icon-button";
 import {
   inferProjectDeviceSectionKey,
   isProjectDevicePlacementValid,
@@ -2995,32 +3017,37 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
     return (
       <div className="tree-editor-shell">
         <div className="editor-toolbar">
-          <button
-            type="button"
-            onClick={() => void handleUndo()}
+          <IconButton
             disabled={!historyState || historyState.undoDepth === 0 || historyBusy || isSaving}
-          >
-            Rückgängig
-          </button>
-          <button
-            type="button"
-            onClick={() => void handleRedo()}
+            icon={Undo2}
+            label="Rückgängig"
+            onClick={() => void handleUndo()}
+            showLabel
+          />
+          <IconButton
             disabled={!historyState || historyState.redoDepth === 0 || historyBusy || isSaving}
-          >
-            Wiederholen
-          </button>
-        <button
-          type="button"
-          onClick={clearSortAndFilters}
-          disabled={!Boolean(sortState) && !hasActiveFilters}
-        >
-          Sortierung/Filter zurücksetzen
-        </button>
-        <button type="button" onClick={toggleColumnSettingsMenu} aria-expanded={isColumnMenuOpen}>
-          Spalten
-        </button>
-        {renderColumnSettingsMenu("col-empty")}
-      </div>
+            icon={Redo2}
+            label="Wiederholen"
+            onClick={() => void handleRedo()}
+            showLabel
+          />
+          <IconButtonSeparator />
+          <IconButton
+            ariaExpanded={isColumnMenuOpen}
+            icon={Columns3}
+            label="Spalten"
+            onClick={toggleColumnSettingsMenu}
+            showLabel
+          />
+          <IconButton
+            disabled={!Boolean(sortState) && !hasActiveFilters}
+            icon={FilterX}
+            label="Sortierung/Filter zurücksetzen"
+            onClick={clearSortAndFilters}
+            showLabel
+          />
+          {renderColumnSettingsMenu("col-empty")}
+        </div>
         {renderActiveViewSummary()}
         {renderDistributionPowerSummary()}
         {error ? (
@@ -3140,82 +3167,90 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
         />
       ) : null}
       <div className="editor-toolbar">
-        <button
-          type="button"
-          onClick={() => void handleUndo()}
+        <IconButton
           disabled={!historyState || historyState.undoDepth === 0 || historyBusy || isSaving}
+          icon={Undo2}
+          label="Rückgängig"
+          onClick={() => void handleUndo()}
+          showLabel
           title={
             historyState?.undoDepth
               ? `${historyState.undoDepth} Änderung(en) können rückgängig gemacht werden.`
               : undefined
           }
-        >
-          Rückgängig
-        </button>
-        <button
-          type="button"
-          onClick={() => void handleRedo()}
+        />
+        <IconButton
           disabled={!historyState || historyState.redoDepth === 0 || historyBusy || isSaving}
+          icon={Redo2}
+          label="Wiederholen"
+          onClick={() => void handleRedo()}
+          showLabel
           title={
             historyState?.redoDepth
               ? `${historyState.redoDepth} Änderung(en) können wiederholt werden.`
               : undefined
           }
-        >
-          Wiederholen
-        </button>
+        />
+        <IconButtonSeparator />
         {isSortedView ? (
-          <button
-            type="button"
-            onClick={() => void handleApplySortedOrder()}
+          <IconButton
             disabled={hasActiveFilters || isSaving || historyBusy}
+            icon={Check}
+            label="Sortierung übernehmen"
+            onClick={() => void handleApplySortedOrder()}
+            showLabel
             title={hasActiveFilters ? "Vor dem Übernehmen der Sortierung zuerst die Filter zurücksetzen." : undefined}
-          >
-            Sortierung übernehmen
-          </button>
+          />
         ) : null}
-        <button type="button" onClick={toggleColumnSettingsMenu} aria-expanded={isColumnMenuOpen}>
-          Spalten
-        </button>
-        <button
-          aria-controls="project-device-drawer"
-          aria-expanded={isProjectDeviceDrawerOpen}
-          className="project-device-drawer-toggle"
-          type="button"
-          onClick={() =>
-            setIsProjectDeviceDrawerOpen((current) => !current)
-          }
-        >
-          {isProjectDeviceDrawerOpen
-            ? "Projektgeräte schließen"
-            : `Projektgeräte öffnen (${projectDevices.length})`}
-        </button>
-        <button
-          type="button"
+        <IconButton
+          ariaExpanded={isColumnMenuOpen}
+          icon={Columns3}
+          label="Spalten"
+          onClick={toggleColumnSettingsMenu}
+          showLabel
+        />
+        <IconButton
+          disabled={!isSortedView && !hasActiveFilters}
+          icon={FilterX}
+          label="Sortierung/Filter zurücksetzen"
+          onClick={clearSortAndFilters}
+          showLabel
+        />
+        <IconButtonSeparator />
+        <IconButton
           disabled={isSaving || historyBusy}
+          icon={FolderPlus}
+          label="Stromkreisgruppe hinzufügen"
+          onClick={() => setCircuitGroupEditorIntent({ kind: "create" })}
+          showLabel
+        />
+        <IconButton
+          disabled={isSaving || historyBusy}
+          icon={PackagePlus}
+          label="Verteilergerät hinzufügen"
           onClick={() =>
             setComponentEditorIntent({
               kind: "create",
               role: "auxiliary",
             })
           }
-        >
-          Verteilergerät hinzufügen
-        </button>
-        <button
-          type="button"
-          disabled={isSaving || historyBusy}
-          onClick={() => setCircuitGroupEditorIntent({ kind: "create" })}
-        >
-          Stromkreisgruppe hinzufügen
-        </button>
-        <button
-          type="button"
-          onClick={clearSortAndFilters}
-          disabled={!isSortedView && !hasActiveFilters}
-        >
-          Sortierung/Filter zurücksetzen
-        </button>
+          showLabel
+        />
+        <IconButton
+          ariaControls="project-device-drawer"
+          ariaExpanded={isProjectDeviceDrawerOpen}
+          className="project-device-drawer-toggle"
+          icon={isProjectDeviceDrawerOpen ? PanelRightClose : PanelRightOpen}
+          label={
+            isProjectDeviceDrawerOpen
+              ? "Projektgeräte schließen"
+              : `Projektgeräte öffnen (${projectDevices.length})`
+          }
+          onClick={() =>
+            setIsProjectDeviceDrawerOpen((current) => !current)
+          }
+          showLabel
+        />
         {renderColumnSettingsMenu("col")}
       </div>
       {renderActiveViewSummary()}
@@ -3717,105 +3752,21 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                           </span>
                         </div>
                         <div className="section-actions">
-                          <button
-                            type="button"
-                            tabIndex={-1}
-                            disabled={!section.category || !section.groupNumber}
-                            onClick={() =>
-                              setCircuitGroupEditorIntent({
-                                kind: "edit",
-                                section,
-                              })
-                            }
-                          >
-                            Gruppe bearbeiten
-                          </button>
-                          <button
-                            type="button"
-                            tabIndex={-1}
-                            disabled={
-                              isSaving ||
-                              !buildCircuitGroupReorderAssignments(
-                                data.sections,
-                                section.id,
-                                -1
-                              )
-                            }
-                            onClick={() =>
-                              void handleMoveCircuitGroup(section.id, -1)
-                            }
-                            title="Innerhalb derselben Kategorie nach oben verschieben"
-                          >
-                            Gruppe nach oben
-                          </button>
-                          <button
-                            type="button"
-                            tabIndex={-1}
-                            disabled={
-                              isSaving ||
-                              !buildCircuitGroupReorderAssignments(
-                                data.sections,
-                                section.id,
-                                1
-                              )
-                            }
-                            onClick={() =>
-                              void handleMoveCircuitGroup(section.id, 1)
-                            }
-                            title="Innerhalb derselben Kategorie nach unten verschieben"
-                          >
-                            Gruppe nach unten
-                          </button>
-                          <button
-                            type="button"
-                            tabIndex={-1}
-                            disabled={
-                              isSaving ||
-                              hasActiveSortOrFilter ||
-                              !section.category ||
-                              !canRenumberCircuitGroups(
-                                data.sections,
-                                section.category
-                              )
-                            }
-                            onClick={() =>
-                              section.category
-                                ? void handleRenumberCircuitGroups(
-                                    section.category
-                                  )
-                                : undefined
-                            }
-                            title={
-                              hasActiveSortOrFilter
-                                ? "Vor der Gruppenneunummerierung Sortierung und Filter zurücksetzen."
-                                : "Alle Gruppen dieser Kategorie gemäß ihrer Reihenfolge neu nummerieren"
-                            }
-                          >
-                            Gruppen-BMK neu nummerieren
-                          </button>
-                          <button
-                            type="button"
-                            tabIndex={-1}
+                          <IconButton
                             disabled={isSaving}
-                            title={
-                              canDeleteCircuitGroup(section)
-                                ? "Leere Stromkreisgruppe entfernen"
-                                : "Befüllte Stromkreisgruppe mit vollständiger Warnung entfernen"
-                            }
-                            onClick={() =>
-                              void handleDeleteCircuitGroup(section)
-                            }
-                          >
-                            Gruppe entfernen
-                          </button>
-                          <button
-                            type="button"
+                            icon={Plus}
+                            label="Stromkreis hinzufügen"
+                            onClick={() => void handleAddReserveCircuit(section.id)}
                             tabIndex={-1}
+                          />
+                          <IconButton
                             disabled={
                               hasUpstreamProtection ||
                               !section.category ||
                               !section.groupNumber
                             }
+                            icon={ShieldPlus}
+                            label="Vorsicherung hinzufügen"
                             onClick={() =>
                               setComponentEditorIntent({
                                 kind: "create",
@@ -3828,17 +3779,18 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                                   ),
                               })
                             }
-                          >
-                            Vorsicherung hinzufügen
-                          </button>
-                          <button
-                            type="button"
                             tabIndex={-1}
+                          >
+                            <span className="icon-button-text">VS</span>
+                          </IconButton>
+                          <IconButton
                             disabled={
                               hasGroupRcd ||
                               !section.category ||
                               !section.groupNumber
                             }
+                            icon={ShieldPlus}
+                            label="Gruppen-FI hinzufügen"
                             onClick={() =>
                               setComponentEditorIntent({
                                 kind: "create",
@@ -3851,26 +3803,112 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                                   ),
                               })
                             }
-                          >
-                            Gruppen-FI hinzufügen
-                          </button>
-                          <button
-                            type="button"
                             tabIndex={-1}
-                            disabled={isSaving}
-                            onClick={() => void handleAddReserveCircuit(section.id)}
                           >
-                            Stromkreis hinzufügen
-                          </button>
-                          <button
-                            type="button"
+                            <span className="icon-button-text">FI</span>
+                          </IconButton>
+                          <IconButtonSeparator />
+                          <IconButton
+                            disabled={!section.category || !section.groupNumber}
+                            icon={Pencil}
+                            label="Gruppe bearbeiten"
+                            onClick={() =>
+                              setCircuitGroupEditorIntent({
+                                kind: "edit",
+                                section,
+                              })
+                            }
                             tabIndex={-1}
+                          />
+                          <IconButton
+                            disabled={
+                              isSaving ||
+                              !buildCircuitGroupReorderAssignments(
+                                data.sections,
+                                section.id,
+                                -1
+                              )
+                            }
+                            icon={ArrowUp}
+                            label="Gruppe nach oben"
+                            onClick={() =>
+                              void handleMoveCircuitGroup(section.id, -1)
+                            }
+                            tabIndex={-1}
+                            title="Gruppe nach oben (innerhalb derselben Kategorie)"
+                          />
+                          <IconButton
+                            disabled={
+                              isSaving ||
+                              !buildCircuitGroupReorderAssignments(
+                                data.sections,
+                                section.id,
+                                1
+                              )
+                            }
+                            icon={ArrowDown}
+                            label="Gruppe nach unten"
+                            onClick={() =>
+                              void handleMoveCircuitGroup(section.id, 1)
+                            }
+                            tabIndex={-1}
+                            title="Gruppe nach unten (innerhalb derselben Kategorie)"
+                          />
+                          <IconButtonSeparator />
+                          <IconButton
                             disabled={hasActiveSortOrFilter || isSaving}
+                            icon={ArrowDown01}
+                            label="Bereich neu nummerieren"
                             onClick={() => void handleRenumberSection(section.id)}
-                            title={hasActiveSortOrFilter ? "Vor der Neunummerierung Sortierung und Filter zurücksetzen." : undefined}
-                          >
-                            Bereich neu nummerieren
-                          </button>
+                            tabIndex={-1}
+                            title={
+                              hasActiveSortOrFilter
+                                ? "Vor der Neunummerierung Sortierung und Filter zurücksetzen."
+                                : "Stromkreise dieser Gruppe neu nummerieren"
+                            }
+                          />
+                          <IconButton
+                            disabled={
+                              isSaving ||
+                              hasActiveSortOrFilter ||
+                              !section.category ||
+                              !canRenumberCircuitGroups(
+                                data.sections,
+                                section.category
+                              )
+                            }
+                            icon={ListOrdered}
+                            label="Gruppen-BMK neu nummerieren"
+                            onClick={() =>
+                              section.category
+                                ? void handleRenumberCircuitGroups(
+                                    section.category
+                                  )
+                                : undefined
+                            }
+                            tabIndex={-1}
+                            title={
+                              hasActiveSortOrFilter
+                                ? "Vor der Gruppenneunummerierung Sortierung und Filter zurücksetzen."
+                                : "Gruppen-BMK: alle Gruppen dieser Kategorie gemäß ihrer Reihenfolge neu nummerieren"
+                            }
+                          />
+                          <IconButtonSeparator />
+                          <IconButton
+                            disabled={isSaving}
+                            icon={Trash2}
+                            label="Gruppe entfernen"
+                            onClick={() =>
+                              void handleDeleteCircuitGroup(section)
+                            }
+                            tabIndex={-1}
+                            title={
+                              canDeleteCircuitGroup(section)
+                                ? "Leere Stromkreisgruppe entfernen"
+                                : "Befüllte Stromkreisgruppe entfernen (mit Warnung)"
+                            }
+                            variant="danger"
+                          />
                         </div>
                       </div>
                       {dropIntent?.kind === "new-circuit" && dropIntent.sectionId === section.id ? (
@@ -4467,28 +4505,32 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                   >
                     {row.circuit && row.rowType !== "deviceRow" ? (
                       <>
-                        <button
-                          type="button"
-                          tabIndex={-1}
+                        <IconButton
                           disabled={isSaving}
+                          icon={ListPlus}
+                          label="Manuelles Gerät hinzufügen"
                           onClick={() => void handleAddManualDevice(row.circuit!, row.sectionId)}
-                        >
-                          Manuelles Gerät hinzufügen
-                        </button>
-                        <button
-                          type="button"
                           tabIndex={-1}
+                        />
+                        <IconButton
                           disabled={isSaving}
+                          icon={Trash2}
+                          label="Stromkreis löschen"
                           onClick={() => void handleDeleteCircuit(row.circuit!.id)}
-                        >
-                          Stromkreis löschen
-                        </button>
+                          tabIndex={-1}
+                          variant="danger"
+                        />
                       </>
                     ) : null}
                     {row.device ? (
-                      <button type="button" tabIndex={-1} disabled={isSaving} onClick={() => void handleDeleteDevice(row.device!.id)}>
-                        Gerät löschen
-                      </button>
+                      <IconButton
+                        disabled={isSaving}
+                        icon={ListX}
+                        label="Gerät löschen"
+                        onClick={() => void handleDeleteDevice(row.device!.id)}
+                        tabIndex={-1}
+                        variant="danger"
+                      />
                     ) : null}
                     {dropIntent?.kind === "new-circuit" && row.rowType === "placeholder" && dropIntent.sectionId === row.sectionId ? (
                       <span className="drop-hint">

src/frontend/components/icon-button.tsx

@@ -0,0 +1,59 @@
+"use client";
+
+import type { LucideIcon } from "lucide-react";
+import type { ReactNode } from "react";
+
+/**
+ * Compact editor button with a lucide icon. `label` is always the accessible
+ * name; it is also the tooltip unless a more specific `title` is given.
+ * With `showLabel` the label (or `children`) is rendered next to the icon.
+ */
+export function IconButton({
+  icon: Icon,
+  label,
+  title,
+  onClick,
+  disabled,
+  variant = "default",
+  showLabel = false,
+  children,
+  className,
+  tabIndex,
+  ariaExpanded,
+  ariaControls,
+}: {
+  icon: LucideIcon;
+  label: string;
+  title?: string;
+  onClick: () => void;
+  disabled?: boolean;
+  variant?: "default" | "danger" | "primary";
+  showLabel?: boolean;
+  children?: ReactNode;
+  className?: string;
+  tabIndex?: number;
+  ariaExpanded?: boolean;
+  ariaControls?: string;
+}) {
+  return (
+    <button
+      aria-controls={ariaControls}
+      aria-expanded={ariaExpanded}
+      aria-label={showLabel ? undefined : label}
+      className={`icon-button icon-button-${variant}${className ? ` ${className}` : ""}`}
+      disabled={disabled}
+      onClick={onClick}
+      tabIndex={tabIndex}
+      title={title ?? label}
+      type="button"
+    >
+      <Icon aria-hidden="true" size={15} strokeWidth={2} />
+      {showLabel ? <span>{children ?? label}</span> : children}
+    </button>
+  );
+}
+
+/** Thin vertical divider between groups of icon buttons. */
+export function IconButtonSeparator() {
+  return <span aria-hidden="true" className="icon-button-separator" />;
+}

src/proxy.ts

@@ -5,8 +5,9 @@ import { createLogger } from "./shared/logging/logger";
 const logger = createLogger("web:navigation");
 
 export function proxy(request: NextRequest) {
-  // The Docker healthcheck hits "/" every few seconds with no User-Agent
-  // header; skip it so real navigation isn't drowned out in the logs.
+  // Probes hit "/web-health" and are excluded by the matcher below. The
+  // User-Agent guard stays as a fallback for anything else that polls
+  // without one, so real navigation isn't drowned out in the logs.
   if (request.headers.get("user-agent")) {
     logger.info("page request", {
       method: request.method,
@@ -17,5 +18,7 @@ export function proxy(request: NextRequest) {
 }
 
 export const config = {
-  matcher: ["/((?!_next/static|_next/image|favicon.ico|api).*)"],
+  matcher: [
+    "/((?!_next/static|_next/image|favicon.ico|api|web-health).*)",
+  ],
 };

src/server/index.ts

@@ -4,11 +4,13 @@ import { projectDeviceRouter } from "./routes/project-device.routes.js";
 import { projectRouter } from "./routes/project.routes.js";
 import { errorMiddleware } from "./middleware/error.middleware.js";
 import { createLogger, toErrorMeta } from "../shared/logging/logger.js";
+import { closeDefaultDatabase } from "../db/client.js";
 
 const logger = createLogger("api");
 const app = express();
 const port = Number(process.env.PORT || 3000);
 const heartbeatIntervalMs = 5 * 60 * 1000;
+const shutdownTimeoutMs = 15 * 1000;
 
 app.use(express.json({ limit: "25mb" }));
 
@@ -62,9 +64,6 @@ process.on("unhandledRejection", (reason) => {
   process.exit(1);
 });
 
-process.on("SIGTERM", () => logger.info("received SIGTERM"));
-process.on("SIGINT", () => logger.info("received SIGINT"));
-
 setInterval(() => {
   const memory = process.memoryUsage();
   logger.verbose("heartbeat", {
@@ -74,6 +73,40 @@ setInterval(() => {
   });
 }, heartbeatIntervalMs).unref();
 
-app.listen(port, () => {
+const server = app.listen(port, () => {
   logger.info("server started", { port });
 });
+
+let shuttingDown = false;
+
+function shutdown(signal: NodeJS.Signals): void {
+  if (shuttingDown) return;
+  shuttingDown = true;
+  logger.info("shutting down", { signal });
+
+  // Falls ein Request haengt oder ein Socket nicht freigegeben wird, soll der
+  // Prozess trotzdem enden, statt auf das SIGKILL des Containers zu warten.
+  const forceExit = setTimeout(() => {
+    logger.error("shutdown timed out, forcing exit");
+    process.exit(1);
+  }, shutdownTimeoutMs);
+  forceExit.unref();
+
+  server.close((error) => {
+    if (error) logger.error("http server close failed", toErrorMeta(error));
+    try {
+      closeDefaultDatabase();
+    } catch (closeError) {
+      logger.error("database close failed", toErrorMeta(closeError));
+    }
+    logger.info("shutdown complete");
+    process.exit(error ? 1 : 0);
+  });
+
+  // Ohne das warten offene Keep-Alive-Verbindungen (z. B. die des
+  // Next.js-Servers) den Timeout oben aus; laufende Requests laufen weiter.
+  server.closeIdleConnections();
+}
+
+process.on("SIGTERM", shutdown);
+process.on("SIGINT", shutdown);

styles.css

@@ -1,15 +0,0 @@
-body {
-  margin: 0;
-  font-family: Arial, sans-serif;
-  background: #f5f6f8;
-  color: #1f2937;
-}
-
-.info {
-  max-width: 760px;
-  margin: 40px auto;
-  background: #ffffff;
-  border: 1px solid #d1d5db;
-  border-radius: 8px;
-  padding: 24px;
-}

tests/project-device-row-sync-project-command.repository.test.ts

@@ -13,9 +13,13 @@ import { ProjectHistoryRepository } from "../src/db/repositories/project-history
 import { circuitDeviceRows } from "../src/db/schema/circuit-device-rows.js";
 import { circuitSections } from "../src/db/schema/circuit-sections.js";
 import { circuits } from "../src/db/schema/circuits.js";
+import { externalImportBatches } from "../src/db/schema/external-import-batches.js";
+import { externalModelObjects } from "../src/db/schema/external-model-objects.js";
+import { externalModelSources } from "../src/db/schema/external-model-sources.js";
 import { projectDevices } from "../src/db/schema/project-devices.js";
 import { projectRevisions } from "../src/db/schema/project-revisions.js";
 import { projects } from "../src/db/schema/projects.js";
+import { externalCsvTestConfiguration } from "./fixtures/revit-csv-fixtures.js";
 import {
   createProjectDeviceRowSyncProjectCommand,
   type ProjectDeviceSyncRowSnapshot,
@@ -163,6 +167,79 @@ function getRow(context: DatabaseContext, rowId: string) {
   return row;
 }
 
+function linkExternalObject(
+  context: DatabaseContext,
+  rowId: string,
+  effectiveQuantity: number
+) {
+  context.db
+    .insert(externalModelSources)
+    .values({
+      id: "source-1",
+      projectId: "project-1",
+      name: "Revit",
+      sourceType: "revit_csv",
+    })
+    .run();
+  context.db
+    .insert(externalImportBatches)
+    .values({
+      id: "batch-1",
+      projectId: "project-1",
+      sourceId: "source-1",
+      importKind: "initial",
+      importedAtIso: "2026-08-02T16:00:00.000Z",
+      fileName: "revit.csv",
+      sha256: "a".repeat(64),
+      appliedProjectRevision: 0,
+      configurationVersion: 1,
+      configurationSnapshot: externalCsvTestConfiguration,
+      originalBytes: Buffer.from("test"),
+      document: { delimiter: ";", encoding: "utf-8", headers: [], rows: [] },
+    })
+    .run();
+  context.db
+    .insert(externalModelObjects)
+    .values({
+      id: "object-1",
+      projectId: "project-1",
+      sourceId: "source-1",
+      ifcGuid: "ifc-1",
+      lastSeenImportBatchId: "batch-1",
+      lastAcceptedImportBatchId: "batch-1",
+      acceptedSourceValues: {
+        rowNumber: 2,
+        roomNumber: "101",
+        roomName: "Büro",
+        familyAndType: "Leuchte: Standard",
+        selectionMarker: "Leuchte",
+        circuitIdentifier: "-1F1",
+        power: "30",
+        quantity: String(effectiveQuantity),
+        additionalSourceValues: {},
+      },
+      planningValues: {
+        displayName: "Leuchte",
+        internalDeviceType: "luminaire",
+        category: "single_phase",
+        connectionKind: "fixed",
+        effectiveQuantity,
+        powerPerUnitW: 30,
+        simultaneityFactor: 1,
+        cosPhi: null,
+        costGroup: null,
+        remark: null,
+      },
+      overriddenFields: [],
+      externalRoomMappingId: null,
+      distributionBoardId: null,
+      linkedProjectDeviceId: null,
+      circuitDeviceRowId: rowId,
+      presenceStatus: "present",
+    })
+    .run();
+}
+
 function snapshot(
   context: DatabaseContext,
   rowId: string
@@ -474,6 +551,112 @@ describe("project-device row sync project-command repository", () => {
     }
   });
 
+  it("keeps manualQuantity from exceeding quantity when a synced quantity shrinks", () => {
+    const fixture = createTestDatabase();
+    try {
+      fixture.context.db
+        .update(circuitDeviceRows)
+        .set({ quantity: 5, manualQuantity: 5 })
+        .where(eq(circuitDeviceRows.id, "row-1"))
+        .run();
+      const store = new ProjectDeviceRowSyncProjectCommandRepository(
+        fixture.context.db
+      );
+      const expected = snapshot(fixture.context, "row-1");
+      store.execute({
+        projectId: "project-1",
+        expectedRevision: 0,
+        source: "user",
+        command: createProjectDeviceRowSyncProjectCommand(
+          "project-device-1",
+          "synchronize",
+          [
+            {
+              rowId: "row-1",
+              expected,
+              target: { ...expected, quantity: 2 },
+            },
+          ]
+        ),
+      });
+      const row = getRow(fixture.context, "row-1");
+      assert.equal(row.quantity, 2);
+      assert.equal(row.manualQuantity, 2);
+    } finally {
+      fixture.context.close();
+    }
+  });
+
+  it("subtracts linked external objects when a synced quantity shrinks", () => {
+    const fixture = createTestDatabase();
+    try {
+      fixture.context.db
+        .update(circuitDeviceRows)
+        .set({ quantity: 5, manualQuantity: 2 })
+        .where(eq(circuitDeviceRows.id, "row-1"))
+        .run();
+      linkExternalObject(fixture.context, "row-1", 3);
+      const store = new ProjectDeviceRowSyncProjectCommandRepository(
+        fixture.context.db
+      );
+      const expected = snapshot(fixture.context, "row-1");
+      store.execute({
+        projectId: "project-1",
+        expectedRevision: 0,
+        source: "user",
+        command: createProjectDeviceRowSyncProjectCommand(
+          "project-device-1",
+          "synchronize",
+          [{ rowId: "row-1", expected, target: { ...expected, quantity: 4 } }]
+        ),
+      });
+      const row = getRow(fixture.context, "row-1");
+      assert.equal(row.quantity, 4);
+      assert.equal(row.manualQuantity, 1);
+    } finally {
+      fixture.context.close();
+    }
+  });
+
+  it("rejects a synced quantity below the linked external total", () => {
+    const fixture = createTestDatabase();
+    try {
+      fixture.context.db
+        .update(circuitDeviceRows)
+        .set({ quantity: 5, manualQuantity: 2 })
+        .where(eq(circuitDeviceRows.id, "row-1"))
+        .run();
+      linkExternalObject(fixture.context, "row-1", 3);
+      const store = new ProjectDeviceRowSyncProjectCommandRepository(
+        fixture.context.db
+      );
+      const expected = snapshot(fixture.context, "row-1");
+      assert.throws(
+        () =>
+          store.execute({
+            projectId: "project-1",
+            expectedRevision: 0,
+            source: "user",
+            command: createProjectDeviceRowSyncProjectCommand(
+              "project-device-1",
+              "synchronize",
+              [{ rowId: "row-1", expected, target: { ...expected, quantity: 2 } }]
+            ),
+          }),
+        /below the total quantity of linked external objects/
+      );
+      const row = getRow(fixture.context, "row-1");
+      assert.equal(row.quantity, 5);
+      assert.equal(row.manualQuantity, 2);
+      assert.equal(
+        fixture.context.db.select().from(projectRevisions).all().length,
+        0
+      );
+    } finally {
+      fixture.context.close();
+    }
+  });
+
   it("rolls back synchronized rows for a stale project revision", () => {
     const fixture = createTestDatabase();
     try {