release: repair the catalog 404 and stop the page jumping (#3)

Showstopper. Adding, editing or deleting a dish redirected to /ruoat, which stopped existing when the tab was renamed to Ruuat — every one of those actions ended on a 404. Live in v20260905-4. The tests missed it because they asserted only a 303; a redirect to a dead URL is still a 303. They now assert the target.

The page no longer jumps. Deleting a dish partway down the catalog, or opening a day in Kirjaa, sent the browser to the top. Both now patch in place via Datastar — bin, pencil, day rows, dish pills, save, delete, cancel and Näytä lisää. Links stay links and forms stay forms, so it works without JavaScript.

Non-production tabs are labelled. ENV=dev gives dev · Foodster.

Contributing guide added, and commits now take Conventional Commit types.

⚠️ Breaking: rewrite the server's .env in this deploy. Environment variables lost the FOODSTER_ prefix; the app refuses to start on an unset PASSWORD.

REPO=…  TAG=latest  PASSWORD=…  HOST=foodster.kessinen.com
ENV=prod  PUID=1000  PGID=1000  TZ=Europe/Helsinki

PUID/PGID rather than UID/GID — UID is read-only in bash and would be silently overwritten.

Co-authored-by: Esa Kataja <[email protected]>
Reviewed-on: #3

compose.yaml

@@ -1,19 +1,23 @@
 services:
   app:
-    image: ${FOODSTER_REPO:?set FOODSTER_REPO in .env}:${FOODSTER_TAG:-latest}
+    image: ${REPO:?set REPO in .env}:${TAG:-latest}
     restart: unless-stopped
 
-    # The database is a bind mount, not a named volume: it sits in ./data on
-    # the host where it can be listed, copied and opened with any sqlite
-    # client. The image runs as UID 65534, so the container has to be told
-    # which host user owns that directory.
-    user: "${FOODSTER_UID:-1000}:${FOODSTER_GID:-1000}"
+    # A bind mount rather than a named volume: the database sits in ./data on
+    # the host, where it can be listed, copied and backed up without going
+    # through the container engine. The image runs as UID 65534, so the
+    # container has to be told which host user owns that directory.
+    #
+    # PUID/PGID rather than UID/GID: UID is a read-only variable in bash, so a
+    # value set here would be silently replaced by the invoking shell's own.
+    user: "${PUID:-1000}:${PGID:-1000}"
     volumes:
       - ./data:/data
 
     environment:
-      FOODSTER_PASSWORD: ${FOODSTER_PASSWORD:?set FOODSTER_PASSWORD in .env}
-      FOODSTER_DB: /data/foodster.db
+      PASSWORD: ${PASSWORD:?set PASSWORD in .env}
+      DB: /data/foodster.db
+      ENV: ${ENV:-prod}
       TZ: ${TZ:-Europe/Helsinki}
 
     # No published ports: Traefik reaches the container over the shared
@@ -22,7 +26,7 @@ services:
     labels:
       - traefik.enable=true
       - traefik.http.routers.foodster.entrypoints=websecure
-      - traefik.http.routers.foodster.rule=Host(`${FOODSTER_HOST:?set FOODSTER_HOST in .env}`)
+      - traefik.http.routers.foodster.rule=Host(`${HOST:?set HOST in .env}`)
       - traefik.http.routers.foodster.tls=true
       - traefik.http.services.foodster.loadbalancer.server.port=8080
       - traefik.docker.network=traefik