refactor(compose): rename docker network archive-net to archiv-net

The docker network was the only `archive-*` identifier in either
compose file; everything else (user, db, bucket, service account,
project name) uses the `archiv-*` spelling. Reviewers' eyes stuttered
on it on the prod compose review (round 2 of PR #499 — Markus and
Tobi). Renamed in both prod and dev compose for consistency and
updated the single doc reference to the dev-project-prefixed
network name.

Operational note: applying this change to a running stack will
recreate the network on the next `docker compose up`; containers
restart, named volumes are unaffected.

`docker compose config --quiet` passes for both compose files and
for the staging profile. Sweep confirms zero `archive-net`
references remain in the tree.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.yml

@@ -13,7 +13,7 @@ services:
     ports:
       - "${PORT_DB}:5432"
     networks:
-      - archive-net
+      - archiv-net
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
       interval: 5s
@@ -35,7 +35,7 @@ services:
       - "${PORT_MINIO_API}:9000"      # API Port
       - "${PORT_MINIO_CONSOLE}:9001"  # Web-Oberfläche
     networks:
-      - archive-net
+      - archiv-net
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
       interval: 30s
@@ -56,7 +56,7 @@ services:
       exit 0;
       "
     networks:
-      - archive-net
+      - archiv-net
 
   # --- Mail catcher: Mailpit (dev only) ---
   # Catches all outgoing emails and displays them in a web UI.
@@ -69,7 +69,7 @@ services:
       - "${PORT_MAILPIT_UI:-8025}:8025"   # Web UI
       - "${PORT_MAILPIT_SMTP:-1025}:1025" # SMTP
     networks:
-      - archive-net
+      - archiv-net
 
   # --- OCR: Python microservice (Surya + Kraken) ---
   # Single-node only: OCR training reloads the model in-process after each run.
@@ -99,7 +99,7 @@ services:
       OCR_CLAHE_TILE_SIZE: "8"      # CLAHE tile grid size (NxN tiles per page)
       OCR_MAX_CACHED_MODELS: "2"    # LRU cache; each model ~500 MB, so 2 = ~1 GB resident
     networks:
-      - archive-net
+      - archiv-net
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
       interval: 10s
@@ -150,7 +150,7 @@ services:
     ports:
       - "${PORT_BACKEND}:8080"
     networks:
-      - archive-net
+      - archiv-net
     healthcheck:
       test: ["CMD-SHELL", "wget -qO- http://localhost:8080/actuator/health | grep -q UP || exit 1"]
       interval: 15s
@@ -185,10 +185,10 @@ services:
     ports:
       - "${PORT_FRONTEND}:5173"
     networks:
-      - archive-net
+      - archiv-net
 
 networks:
-  archive-net:
+  archiv-net:
     driver: bridge
 
 volumes: