diff --git a/.gitignore b/.gitignore
old mode 100644
new mode 100755
index ed5ffe6..19da578
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,8 @@
 node_modules/
 dist/
 .next/
+# Stray tsc output; drizzle-kit reads drizzle.config.ts.
+/drizzle.config.js
 data/*.db
 data/backups/*.db
 .codex/*.log
-dynamo/output/
diff --git a/AGENTS.md b/AGENTS.md
old mode 100644
new mode 100755
index f1a509d..d781e10
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -531,13 +531,44 @@ Users must be able to override sizing suggestions.
 - Preserve stable UUIDs and explicit transaction boundaries for a later
   PostgreSQL adapter.
 
+## Deployment Rules
+
+There are two compose files and they must stay separate.
+
+- `compose.yaml` is development only. Project name `leistungsbilanz-dev`, ports
+  bound to `127.0.0.1`, watch-mode servers, source bind mounts.
+- `compose.prod.yaml` is the deployment. Project name `leistungsbilanz`, image
+  target `prod`, compiled output, no bind mounts, no file watchers.
+
+Rules that a running deployment depends on:
+
+- Never run the development stack permanently. `next dev` and `tsx watch`
+  produce load and grow in memory with no user activity.
+- Never reintroduce `CHOKIDAR_USEPOLLING` or `WATCHPACK_POLLING`. They make the
+  watcher poll the source tree continuously.
+- Container healthchecks target `/health` only. `/` is a redirect to
+  `/projects`, and `fetch` follows redirects, so probing `/` renders a full
+  page on every interval.
+- Every service keeps a `mem_limit`; production services also keep a
+  `memswap_limit` of the same size so a leak kills the container instead of the
+  host.
+- The production image runs as `node`. Data volumes written by an earlier root
+  container need a one-time `chown` (see `docs/deployment.md`).
+- The Express API is not published on the host. It has no authentication and is
+  reached through the Next.js rewrite.
+- Development migrates with `drizzle-kit`; the production image has no
+  devDependencies and migrates with `node scripts/run-migrations.js`.
+- `SIGTERM`/`SIGINT` must close the HTTP server and the SQLite handle and then
+  exit. Do not reduce these handlers to logging.
+
 ## Current Deferred Work
 
 - Revit/CSV/IFCGUID round-trip, except when Phase 14 is explicitly requested and
   `docs/spec/revit-csv-integration-requirements.md` is being followed
 - full electrical sizing
 - multi-user/PostgreSQL operation
-- supported production deployment
+- authentication, authorization and TLS termination; until they exist the
+  deployment belongs in a trusted network or behind an authenticating proxy
 
 Do not implement these while working on an unrelated phase.
 
diff --git a/Dockerfile b/Dockerfile
old mode 100644
new mode 100755
index 31d28c4..4b4ed55
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,21 +1,51 @@
-FROM node:24
-WORKDIR /app
+# syntax=docker/dockerfile:1
 
+# ---------------------------------------------------------------------------
+# deps: complete dependency tree, shared by the build and the dev target.
+# Stays on the full node image because better-sqlite3 needs a toolchain.
+# ---------------------------------------------------------------------------
+FROM node:22 AS deps
+WORKDIR /app
 COPY package*.json ./
 RUN npm ci
 
+# ---------------------------------------------------------------------------
+# dev: watch-mode target used by compose.yaml. Keeps devDependencies so
+# tsx, drizzle-kit and next dev are available. Sources come from bind mounts.
+# ---------------------------------------------------------------------------
+FROM deps AS dev
+ENV NODE_ENV=development
 COPY . .
+RUN mkdir -p data
+EXPOSE 3000 3001
+CMD ["npm", "run", "dev:api"]
 
-# next build writes the rewrite destinations from next.config.mjs into
-# .next/routes-manifest.json, so "next start" cannot pick up a different
-# API URL later. The value has to be known here, not just at runtime.
+# ---------------------------------------------------------------------------
+# build: compile the API to dist/ and the frontend to .next/, then drop
+# devDependencies so the runtime stage carries only what it executes.
+# ---------------------------------------------------------------------------
+FROM deps AS build
+ENV NEXT_TELEMETRY_DISABLED=1
+# Next.js resolves next.config.mjs rewrites at build time and writes the literal
+# destination into .next/routes-manifest.json. Setting API_INTERNAL_URL only at
+# runtime has no effect on `next start`, so the API address of the target
+# topology has to be known here. Server components read the variable at runtime.
 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: runtime image. node:22-slim shares the Debian release of the build
+# stage, so the compiled better-sqlite3 binding stays loadable.
+# ---------------------------------------------------------------------------
+FROM node:22-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"]
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
index fc82fca..db895e6
--- a/README.md
+++ b/README.md
@@ -4,8 +4,9 @@ Leistungsbilanz ist eine Webanwendung für die elektrische Ausführungsplanung.
 Mittelpunkt steht ein tabellenähnlicher Stromkreislisten-Editor, der Stromkreise,
 Gerätezeilen und wiederverwendbare Projektgeräte fachlich getrennt behandelt.
 
-Das Projekt befindet sich in aktiver Entwicklung. Der lokale Entwicklungsbetrieb
-mit SQLite und Docker Compose ist unterstützt. Ein Produktionsdeployment,
+Das Projekt befindet sich in aktiver Entwicklung. Unterstützt sind der lokale
+Entwicklungsbetrieb (`compose.yaml`) und ein Einzelbenutzer-Deployment im
+vertrauenswürdigen Netz (`compose.prod.yaml`). Authentifizierung,
 Mehrbenutzerbetrieb und der Revit-/IFCGUID-Datenaustausch sind noch nicht
 implementiert.
 
@@ -62,29 +63,27 @@ docker compose logs --follow
 docker compose down
 ```
 
-`compose.yaml` startet den Produktionsstand: gebautes `dist/` und `next start`,
-ohne Quellcode-Mounts und ohne Datei-Watcher. Details stehen in
-[Deployment und Betrieb](docs/deployment.md).
+`compose.yaml` startet Entwicklungsserver mit Quellcode-Mounts, veröffentlicht
+seine Ports nur auf `127.0.0.1` und ist **kein Produktionsdeployment**. Es
+gehört nicht in den Dauerbetrieb: `next dev` und `tsx watch` erzeugen auch ohne
+Benutzer dauerhaft Last und wachsen im Speicher.
 
-Für die Entwicklung mit Hot Reload gibt es einen eigenen Stack mit
-Quellcode-Mounts und Watchern:
+## Deployment
 
-```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
+```bash
+docker compose -f compose.prod.yaml up --build --detach
 ```
 
-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.
+Startet die kompilierte API und `next start` in getrennten Containern, mit
+Speicherlimits und ohne Dateibeobachter. Das Frontend hört auf Port 3090, die
+API ist nur intern erreichbar. Vorbereitung eines bestehenden Datenvolumes und
+weitere Details stehen in [Deployment und Betrieb](docs/deployment.md).
 
 ## Direkte lokale Entwicklung
 
 Voraussetzungen:
 
-- Node.js 24
+- Node.js 22
 - npm
 
 ```powershell
diff --git a/compose.dev.yaml b/compose.dev.yaml
deleted file mode 100644
index 86e42e2..0000000
--- a/compose.dev.yaml
+++ /dev/null
@@ -1,87 +0,0 @@
-# Development stack: source mounts, watching dev servers, hot reload.
-#   docker compose -f compose.dev.yaml up --build
-#
-# The polling watchers below are needed for bind mounts on Windows and
-# macOS, where inotify events do not cross the VM boundary. They cost
-# continuous CPU, which is why the production stack in compose.yaml does
-# not run watchers at all.
-name: leistungsbilanz-dev
-
-x-logging: &logging
-  driver: json-file
-  options:
-    max-size: "20m"
-    max-file: "10"
-
-services:
-  api:
-    build:
-      context: .
-    command:
-      - sh
-      - -c
-      - npm run db:migrate && npm run db:verify:circuit-schema && npm run dev:api
-    environment:
-      PORT: "3000"
-      CHOKIDAR_USEPOLLING: "true"
-      LOG_LEVEL: "${LOG_LEVEL:-debug}"
-    init: true
-    restart: unless-stopped
-    logging: *logging
-    ports:
-      - "3000:3000"
-    volumes:
-      - ./src:/app/src
-      - ./scripts:/app/scripts
-      - ./data:/app/data
-      - ./drizzle.config.ts:/app/drizzle.config.ts:ro
-      - ./tsconfig.json:/app/tsconfig.json:ro
-    healthcheck:
-      test:
-        - CMD
-        - node
-        - -e
-        - fetch('http://localhost:3000/health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
-      interval: 30s
-      timeout: 3s
-      retries: 5
-      start_period: 20s
-
-  web:
-    build:
-      context: .
-    command:
-      - npm
-      - run
-      - dev:web
-      - --
-      - --hostname
-      - 0.0.0.0
-    environment:
-      API_INTERNAL_URL: http://api:3000
-      WATCHPACK_POLLING: "true"
-      NEXT_TELEMETRY_DISABLED: "1"
-      LOG_LEVEL: "${LOG_LEVEL:-debug}"
-    init: true
-    restart: unless-stopped
-    logging: *logging
-    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
-    healthcheck:
-      test:
-        - CMD
-        - node
-        - -e
-        - fetch('http://localhost:3001/web-health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
-      interval: 30s
-      timeout: 3s
-      retries: 5
-      start_period: 20s
diff --git a/compose.prod.yaml b/compose.prod.yaml
new file mode 100755
index 0000000..a7a56f3
--- /dev/null
+++ b/compose.prod.yaml
@@ -0,0 +1,102 @@
+# Production deployment.
+#
+# Differences to compose.yaml that matter operationally:
+#   - runs compiled output (node dist/, next start) instead of watch mode
+#   - no source bind mounts and no file watchers, so an idle stack costs ~0% CPU
+#   - healthchecks hit the cheap /health JSON endpoint, not a rendered page
+#   - every service has a hard memory limit and may not spill into host swap
+#   - the Express API is reachable only inside the compose network
+#
+# Usage:
+#   docker compose -f compose.prod.yaml up --build --detach
+name: leistungsbilanz
+
+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: prod
+      args:
+        # Baked into the Next.js rewrite manifest; see the build stage in the
+        # Dockerfile. Must match the API service address in this network.
+        API_INTERNAL_URL: http://api:3000
+    command:
+      - sh
+      - -c
+      - node scripts/run-migrations.js && exec node dist/server/index.js
+    environment:
+      NODE_ENV: production
+      PORT: "3000"
+      LOG_LEVEL: "${LOG_LEVEL:-info}"
+    # Not published on the host: the API has no authentication and is reached
+    # through the Next.js rewrite in the web service.
+    expose:
+      - "3000"
+    mem_limit: 512m
+    memswap_limit: 512m
+    volumes:
+      - leistungsbilanz-data:/app/data
+    healthcheck:
+      test:
+        - CMD
+        - node
+        - -e
+        - fetch('http://127.0.0.1:3000/health').then(response=>process.exit(response.ok?0:1)).catch(()=>process.exit(1))
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 30s
+
+  web:
+    <<: *service-defaults
+    build:
+      context: .
+      target: prod
+      args:
+        # Baked into the Next.js rewrite manifest; see the build stage in the
+        # Dockerfile. Must match the API service address in this network.
+        API_INTERNAL_URL: http://api:3000
+    command:
+      - node_modules/.bin/next
+      - start
+      - -p
+      - "3001"
+      - --hostname
+      - 0.0.0.0
+    environment:
+      NODE_ENV: production
+      API_INTERNAL_URL: http://api:3000
+      LOG_LEVEL: "${LOG_LEVEL:-info}"
+    depends_on:
+      api:
+        condition: service_healthy
+    ports:
+      - "3090:3001"
+    mem_limit: 1g
+    memswap_limit: 1g
+    healthcheck:
+      # /health is rewritten to the API, so this verifies the web process and
+      # its API connectivity for the cost of one JSON response.
+      test:
+        - CMD
+        - node
+        - -e
+        - fetch('http://127.0.0.1:3001/health').then(response=>process.exit(response.ok?0:1)).catch(()=>process.exit(1))
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 30s
+
+volumes:
+  leistungsbilanz-data:
diff --git a/compose.yaml b/compose.yaml
old mode 100644
new mode 100755
index 503a4b2..5d25db7
--- a/compose.yaml
+++ b/compose.yaml
@@ -1,73 +1,94 @@
-name: leistungsbilanz
+# Local development only. Runs watch-mode servers against bind-mounted sources.
+# For a deployment use compose.prod.yaml.
+#
+# The project name must stay distinct from the production project so that
+# `docker compose down` in this directory can never tear down a running
+# production stack.
+name: leistungsbilanz-dev
 
-x-build: &build
-  context: .
-  args:
-    # Baked into .next/routes-manifest.json by next build; see Dockerfile.
-    API_INTERNAL_URL: http://api:3000
-
-x-logging: &logging
-  driver: json-file
-  options:
-    max-size: "20m"
-    max-file: "10"
+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:
-    build: *build
+    <<: *service-defaults
+    build:
+      context: .
+      target: dev
     command:
       - sh
       - -c
-      - node scripts/run-migrations.js && node scripts/db-verify-circuit-schema.js && node dist/server/index.js
+      - npm run db:migrate && npm run db:verify:circuit-schema && npm run dev:api
     environment:
-      NODE_ENV: production
       PORT: "3000"
       LOG_LEVEL: "${LOG_LEVEL:-info}"
-    init: true
-    restart: unless-stopped
-    logging: *logging
+    # Development ports stay on the loopback interface; nothing here is
+    # authenticated and the API must not be reachable from the LAN.
     ports:
-      - "3000:3000"
+      - "127.0.0.1:3000:3000"
+    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://localhost:3000/health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+        - fetch('http://127.0.0.1:3000/health').then(response=>process.exit(response.ok?0:1)).catch(()=>process.exit(1))
       interval: 30s
-      timeout: 3s
+      timeout: 5s
       retries: 5
-      start_period: 20s
+      start_period: 30s
 
   web:
-    build: *build
+    <<: *service-defaults
+    build:
+      context: .
+      target: dev
     command:
-      - node_modules/.bin/next
-      - start
-      - -p
-      - "3001"
+      - npm
+      - run
+      - dev:web
+      - --
+      - --hostname
+      - 0.0.0.0
     environment:
-      NODE_ENV: production
       API_INTERNAL_URL: http://api:3000
       NEXT_TELEMETRY_DISABLED: "1"
       LOG_LEVEL: "${LOG_LEVEL:-info}"
-    init: true
-    restart: unless-stopped
-    logging: *logging
     depends_on:
       api:
         condition: service_healthy
     ports:
-      - "3001:3001"
+      - "127.0.0.1:3001:3001"
+    # next dev grows steadily under long-running use; the limit turns that into
+    # a container restart instead of host-wide 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:
+      # Must stay on /health: "/" redirects to /projects and Node's fetch
+      # follows redirects, which turned every probe into a full page render.
       test:
         - CMD
         - node
         - -e
-        - fetch('http://localhost:3001/web-health').then(response=>{if(!response.ok)process.exit(1)}).catch(()=>process.exit(1))
+        - fetch('http://127.0.0.1:3001/health').then(response=>process.exit(response.ok?0:1)).catch(()=>process.exit(1))
       interval: 30s
-      timeout: 3s
+      timeout: 5s
       retries: 5
-      start_period: 20s
+      start_period: 30s
diff --git a/docs/deployment.md b/docs/deployment.md
old mode 100644
new mode 100755
index 06289a7..355cf40
--- a/docs/deployment.md
+++ b/docs/deployment.md
@@ -2,29 +2,40 @@
 
 ## Aktueller Status
 
-Es gibt zwei Compose-Stacks.
+Es gibt zwei getrennte Compose-Dateien. Sie dürfen nicht verwechselt 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.
+| Datei | Projektname | Zweck |
+| --- | --- | --- |
+| `compose.yaml` | `leistungsbilanz-dev` | ausschließlich lokale Entwicklung |
+| `compose.prod.yaml` | `leistungsbilanz` | Dauerbetrieb im LAN |
 
-`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.
+`compose.yaml` startet `tsx watch` und `next dev` und bindet Quellcode vom Host
+ein. Dieser Stack ist **nicht** für Dauerbetrieb geeignet (siehe
+[Warum kein Dev-Stack im Dauerbetrieb](#warum-kein-dev-stack-im-dauerbetrieb)).
+Seine Ports sind deshalb an `127.0.0.1` gebunden.
 
-Beides enthält weder TLS, Authentifizierung, Reverse Proxy, Prozesshärtung noch
-ein zentral betriebenes Datenbanksystem. Der Stack darf deshalb nicht öffentlich
-erreichbar gemacht werden.
+`compose.prod.yaml` startet kompilierten Code ohne Dateibeobachter. Es enthält
+weiterhin weder TLS, Authentifizierung noch ein Benutzer-/Rollenmodell; die
+Express-API wird deshalb nicht auf dem Host veröffentlicht, sondern nur über den
+Next.js-Rewrite erreicht. Der Stack gehört hinter einen Reverse Proxy mit
+Authentifizierung und darf nicht öffentlich erreichbar gemacht werden.
 
 ## Topologie
 
-| Komponente | Port | Healthcheck | Persistenz |
-| --- | ---: | --- | --- |
-| Next.js Web | 3001 | `GET /web-health` | keine |
-| Express API | 3000 | `GET /health` | `./data:/app/data` |
-| SQLite | Datei | Integritäts-/FK-Prüfung via Backup und Skript | `data/leistungsbilanz.db` |
+Entwicklung (`compose.yaml`):
+
+| Komponente | Port | Healthcheck | Speicherlimit | Persistenz |
+| --- | ---: | --- | ---: | --- |
+| Next.js Web | `127.0.0.1:3001` | `GET /health` alle 30 s | 2 GB | keine |
+| Express API | `127.0.0.1:3000` | `GET /health` alle 30 s | 1 GB | `./data:/app/data` |
+
+Produktion (`compose.prod.yaml`):
+
+| Komponente | Port | Healthcheck | Speicherlimit | Persistenz |
+| --- | ---: | --- | ---: | --- |
+| Next.js Web | `3090` | `GET /health` alle 30 s | 1 GB, kein Swap | keine |
+| Express API | nur intern | `GET /health` alle 30 s | 512 MB, kein Swap | Volume `leistungsbilanz-data` |
+| SQLite | Datei | Integritäts-/FK-Prüfung via Backup und Skript | – | `data/leistungsbilanz.db` |
 
 Verwendete Umgebungsvariablen:
 
@@ -32,22 +43,66 @@ 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` – nur in
-  `compose.dev.yaml`, für Dateibeobachtung über Bind-Mounts hinweg
+- `NODE_ENV=production` – nur in `compose.prod.yaml`
 - `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 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`).
+Beim API-Start laufen in der Entwicklung zuerst `npm run db:migrate` und
+`npm run db:verify:circuit-schema` (drizzle-kit, eine devDependency). Das
+Produktionsimage enthält keine devDependencies und migriert stattdessen über
+`node scripts/run-migrations.js`, das denselben Migrationsordner mit
+`drizzle-orm` anwendet.
 
-`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.
+## Warum kein Dev-Stack im Dauerbetrieb
+
+`compose.yaml` lief einmal fünf Tage durchgehend auf einem Server. Ergebnis:
+10,3 GB belegter Arbeitsspeicher im Web-Container, 12,2 % Dauer-CPU im
+API-Container und ein Host, der 13 GB Swap belegt hatte. Vier Ursachen wirkten
+zusammen; alle vier sind inzwischen behoben:
+
+1. **Polling-Dateibeobachter.** `CHOKIDAR_USEPOLLING` und `WATCHPACK_POLLING`
+   ließen `tsx watch` permanent den Quellbaum abklappern. Beide Variablen sind
+   entfernt; unter Linux funktioniert `inotify` auf Bind-Mounts.
+2. **Healthcheck als Seitenrendering.** Der Web-Healthcheck rief `/` alle fünf
+   Sekunden auf. `/` ist ein `redirect("/projects")`, und Node's `fetch` folgt
+   Redirects – jede Prüfung rendert also die vollständige Projektliste, rund
+   16.000-mal pro Tag. Der Healthcheck zeigt jetzt auf `/health` und läuft alle
+   30 Sekunden.
+3. **Kein Speicherlimit.** `next dev` hält Kompilierungs-State und wächst unter
+   Dauerlast unbegrenzt. Beide Compose-Dateien setzen jetzt `mem_limit`; in der
+   Produktion zusätzlich `memswap_limit` in gleicher Höhe, damit ein Leck den
+   Container beendet statt den Host in den Swap zu ziehen.
+4. **Kollidierender Projektname.** `compose.yaml` hieß `leistungsbilanz` und
+   damit genauso wie das Produktionsprojekt; ein `docker compose down` im
+   Entwicklungsverzeichnis zielte auf den Produktionsstack. Der Entwicklungsname
+   ist jetzt `leistungsbilanz-dev`.
+
+## Produktionsdeployment
+
+```bash
+docker compose -f compose.prod.yaml up --build --detach
+docker compose -f compose.prod.yaml ps
+docker compose -f compose.prod.yaml logs --follow
+```
+
+Das Frontend hört danach auf Port 3090. Die API ist nur innerhalb des
+Compose-Netzes erreichbar.
+
+Das Produktionsimage läuft als Benutzer `node` statt als `root`. Wenn ein
+bestehendes Datenvolume von einem früheren root-Container beschrieben wurde,
+müssen dessen Dateien einmalig übereignet werden, sonst schlagen Schreibzugriffe
+mit `SQLITE_READONLY` fehl:
+
+```bash
+docker run --rm -v leistungsbilanz_leistungsbilanz-data:/data alpine \
+  chown -R 1000:1000 /data
+```
+
+Ein bestehendes Ein-Container-Deployment über `scripts/docker-start.sh` wird
+abgelöst, indem dessen Stack gestoppt und `compose.prod.yaml` mit demselben
+Projektnamen `leistungsbilanz` gestartet wird; das Volume bleibt dabei erhalten.
 
 ## Logging
 
@@ -83,23 +138,40 @@ 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.
 
-## Voraussetzungen für ein späteres Produktionssetup
+Anfragen von Healthcheck- und Monitoring-Clients (`node`, `curl`, `wget`, …)
+werden anhand des User-Agents aus dem Navigationslog gefiltert und `/health`
+läuft gar nicht erst durch `src/proxy.ts`.
 
-Vor einer produktiven Installation werden mindestens benötigt:
+## Herunterfahren
+
+`SIGTERM` und `SIGINT` schließen den HTTP-Server, danach das SQLite-Handle, und
+beenden den Prozess mit Code 0. Kommt der Server binnen 15 Sekunden nicht
+herunter, beendet sich der Prozess trotzdem. Vorher wurde das Signal nur
+geloggt: jeder `docker stop` lief in die Grace Period und endete mit `SIGKILL`,
+möglicherweise mitten in einem Schreibvorgang. `stop_grace_period` steht in
+beiden Compose-Dateien auf 20 s und liegt damit über dem internen Timeout.
+
+## Offene Punkte für einen vollwertigen Produktionsbetrieb
+
+Umgesetzt:
+
+- reproduzierbares Produktionsimage und Next.js-Produktionsstart
+- kontrollierter Migrationsschritt vor dem API-Start
+- strukturierte Logs mit Rotation, Healthchecks, Speicherlimits
+- definiertes Herunterfahren
+
+Weiterhin offen:
 
-- reproduzierbare Produktionsimages und ein Next.js-Produktionsstartskript
 - TLS-Termination und Reverse Proxy
 - Authentifizierung, Autorisierung und Benutzer-/Rollenmodell
 - definierte Secrets- und Konfigurationsverwaltung
-- persistenter, gesicherter Datenbankbetrieb
-- kontrollierter einmaliger Migrationsschritt vor dem API-Rollout
-- Monitoring, strukturierte Logs und Alarmierung
+- Alarmierung auf Basis der Healthchecks
 - getestete Backup-, Restore- und Rollback-Prozeduren
 - Entscheidung, ob SQLite für einen einzelnen Prozess genügt oder PostgreSQL für
   Mehrbenutzerbetrieb erforderlich ist
 
-Bis diese Punkte umgesetzt und getestet sind, besteht die „Installation“ aus dem
-lokalen Entwicklungsstart in der README.
+Solange Authentifizierung fehlt, gehört der Stack ausschließlich in ein
+vertrauenswürdiges Netz oder hinter einen authentifizierenden Reverse Proxy.
 
 ## Backup und Wiederherstellung
 
diff --git a/drizzle.config.js b/drizzle.config.js
deleted file mode 100644
index 004045a..0000000
--- a/drizzle.config.js
+++ /dev/null
@@ -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",
-    },
-});
diff --git a/dynamo/01_check_model_identity.py b/dynamo/01_check_model_identity.py
deleted file mode 100644
index a3fe009..0000000
--- a/dynamo/01_check_model_identity.py
+++ /dev/null
@@ -1,385 +0,0 @@
-"""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(),
-    }
diff --git a/dynamo/02_export_electrical_fixture_parameter_inventory.py b/dynamo/02_export_electrical_fixture_parameter_inventory.py
deleted file mode 100644
index 440a222..0000000
--- a/dynamo/02_export_electrical_fixture_parameter_inventory.py
+++ /dev/null
@@ -1,517 +0,0 @@
-"""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(),
-    }
diff --git a/dynamo/README.md b/dynamo/README.md
deleted file mode 100644
index 800eded..0000000
--- a/dynamo/README.md
+++ /dev/null
@@ -1,69 +0,0 @@
-# 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.
diff --git a/index.html b/index.html
deleted file mode 100644
index dcb632f..0000000
--- a/index.html
+++ /dev/null
@@ -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>
diff --git a/package-lock.json b/package-lock.json
index 417421b..b0abb41 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,15 +22,12 @@
       "devDependencies": {
         "@types/better-sqlite3": "^7.6.13",
         "@types/express": "^5.0.6",
-        "@types/node": "^24.10.1",
+        "@types/node": "^25.6.0",
         "@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": {
@@ -1517,13 +1514,12 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "24.13.3",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.3.tgz",
-      "integrity": "sha512-Dh8vAsV36ig5wa9OX4pXvMc9D3Veibfw2wix0CUwYODLD8nkj9UsLjASr49nPg+2eKzxhBV+v7L8pXvT4e639Q==",
+      "version": "25.6.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
+      "integrity": "sha512-+qIYRKdNYJwY3vRCZMdJbPLJAtGjQBudzZzdzwQYkEPQd+PJGixUL5QfvCLDaULoLv+RhT3LDkwEfKaAkgSmNQ==",
       "devOptional": true,
-      "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~7.19.0"
       }
     },
     "node_modules/@types/qs": {
@@ -3692,11 +3688,10 @@
       }
     },
     "node_modules/undici-types": {
-      "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"
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
+      "devOptional": true
     },
     "node_modules/unpipe": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index 414eb53..9bc5ae3 100644
--- a/package.json
+++ b/package.json
@@ -3,9 +3,6 @@
   "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",
@@ -13,9 +10,6 @@
     "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",
@@ -46,7 +40,7 @@
   "devDependencies": {
     "@types/better-sqlite3": "^7.6.13",
     "@types/express": "^5.0.6",
-    "@types/node": "^24.10.1",
+    "@types/node": "^25.6.0",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "drizzle-kit": "^0.31.10",
diff --git a/scripts/docker-start.sh b/scripts/docker-start.sh
old mode 100644
new mode 100755
index bf0d856..85a27a6
--- a/scripts/docker-start.sh
+++ b/scripts/docker-start.sh
@@ -1,4 +1,7 @@
 #!/bin/sh
+# Legacy single-container entrypoint. Kept for the existing deployment that
+# still runs both processes in one container; new deployments use
+# compose.prod.yaml, which runs the API and the web server separately.
 set -e
 
 echo "Running migrations..."
@@ -6,11 +9,34 @@ node scripts/run-migrations.js
 
 echo "Starting API server on :3000..."
 node dist/server/index.js &
+api_pid=$!
 
 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
+until node -e "fetch('http://127.0.0.1:3000/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))" 2>/dev/null; do
+  if ! kill -0 "$api_pid" 2>/dev/null; then
+    echo "API process exited during startup."
+    exit 1
+  fi
   sleep 1
 done
 
 echo "Starting Next.js on :3001..."
-exec node_modules/.bin/next start -p 3001
+node_modules/.bin/next start -p 3001 &
+web_pid=$!
+
+terminate() {
+  kill -TERM "$api_pid" "$web_pid" 2>/dev/null || true
+}
+trap terminate TERM INT
+
+# Previously the API ran unsupervised in the background: when it died the
+# container stayed "up" and served a frontend whose every request failed.
+# Exiting here lets the restart policy replace the container instead.
+while kill -0 "$api_pid" 2>/dev/null && kill -0 "$web_pid" 2>/dev/null; do
+  sleep 5
+done
+
+echo "A server process exited; stopping the container."
+terminate
+wait "$api_pid" "$web_pid" 2>/dev/null || true
+exit 1
diff --git a/src/app/web-health/route.ts b/src/app/web-health/route.ts
deleted file mode 100644
index ce6f2c4..0000000
--- a/src/app/web-health/route.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-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 });
-}
diff --git a/src/db/client.ts b/src/db/client.ts
old mode 100644
new mode 100755
index 02cfc7e..39f4125
--- a/src/db/client.ts
+++ b/src/db/client.ts
@@ -7,3 +7,11 @@ const defaultDatabaseContext = createDatabaseContext(
 
 export const db = defaultDatabaseContext.db;
 
+/**
+ * Closes the process-wide SQLite handle. Only the composition root calls this,
+ * during shutdown, so pending writes are flushed before the process exits.
+ */
+export function closeDefaultDatabase(): void {
+  defaultDatabaseContext.close();
+}
+
diff --git a/src/db/repositories/project-device-row-sync-project-command.repository.ts b/src/db/repositories/project-device-row-sync-project-command.repository.ts
index eb722d7..da17458 100644
--- a/src/db/repositories/project-device-row-sync-project-command.repository.ts
+++ b/src/db/repositories/project-device-row-sync-project-command.repository.ts
@@ -14,7 +14,6 @@ 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";
@@ -120,32 +119,9 @@ 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(values)
+        .set(assignment.target)
         .where(eq(circuitDeviceRows.id, assignment.rowId))
         .run();
       if (updated.changes !== 1) {
diff --git a/src/proxy.ts b/src/proxy.ts
old mode 100644
new mode 100755
index 3f4b83a..a2cb084
--- a/src/proxy.ts
+++ b/src/proxy.ts
@@ -4,11 +4,13 @@ import { createLogger } from "./shared/logging/logger";
 
 const logger = createLogger("web:navigation");
 
+// Node's fetch() sends "User-Agent: node", so the previous "no User-Agent"
+// check never matched and every healthcheck was logged as page navigation.
+const PROBE_USER_AGENT = /^(node|curl|wget|go-http-client|kube-probe)\b/i;
+
 export function proxy(request: NextRequest) {
-  // 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")) {
+  const userAgent = request.headers.get("user-agent") ?? "";
+  if (userAgent && !PROBE_USER_AGENT.test(userAgent)) {
     logger.info("page request", {
       method: request.method,
       path: request.nextUrl.pathname,
@@ -18,7 +20,5 @@ export function proxy(request: NextRequest) {
 }
 
 export const config = {
-  matcher: [
-    "/((?!_next/static|_next/image|favicon.ico|api|web-health).*)",
-  ],
+  matcher: ["/((?!_next/static|_next/image|favicon.ico|api|health).*)"],
 };
diff --git a/src/server/index.ts b/src/server/index.ts
old mode 100644
new mode 100755
index 2f6ac5e..3ee21f1
--- a/src/server/index.ts
+++ b/src/server/index.ts
@@ -4,6 +4,7 @@ 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();
@@ -62,8 +63,35 @@ process.on("unhandledRejection", (reason) => {
   process.exit(1);
 });
 
-process.on("SIGTERM", () => logger.info("received SIGTERM"));
-process.on("SIGINT", () => logger.info("received SIGINT"));
+let shuttingDown = false;
+
+function shutdown(signal: NodeJS.Signals): void {
+  if (shuttingDown) return;
+  shuttingDown = true;
+  logger.info("shutting down", { signal });
+
+  // Without this the process only logged the signal and kept running, so every
+  // stop waited for Docker's grace period and ended in SIGKILL mid-write.
+  const forceExit = setTimeout(() => {
+    logger.warn("shutdown timed out, exiting anyway");
+    process.exit(1);
+  }, 15_000);
+  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);
+  });
+}
+
+process.on("SIGTERM", shutdown);
+process.on("SIGINT", shutdown);
 
 setInterval(() => {
   const memory = process.memoryUsage();
@@ -74,6 +102,6 @@ setInterval(() => {
   });
 }, heartbeatIntervalMs).unref();
 
-app.listen(port, () => {
+const server = app.listen(port, () => {
   logger.info("server started", { port });
 });
diff --git a/styles.css b/styles.css
deleted file mode 100644
index 58c8f79..0000000
--- a/styles.css
+++ /dev/null
@@ -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;
-}
diff --git a/tests/project-device-row-sync-project-command.repository.test.ts b/tests/project-device-row-sync-project-command.repository.test.ts
index 593a7f6..75d56a8 100644
--- a/tests/project-device-row-sync-project-command.repository.test.ts
+++ b/tests/project-device-row-sync-project-command.repository.test.ts
@@ -13,13 +13,9 @@ 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,
@@ -167,79 +163,6 @@ 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
@@ -551,112 +474,6 @@ 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 {