fix(web-app): remove unused sqlite.worker.js and wasi-dummy.js, update Config.kt and service worker logic

- Deleted `sqlite.worker.js` and `wasi-dummy.js` to clean up outdated resources.
- Updated `Config.kt` to use a shared `Json` instance for deserialization.
- Revised service worker for cache versioning and to bypass caching of `web-app.js` and `.map` files.
- Enhanced debug logging and improved handling of uncaught errors in new `sqlite.worker.js`.

Signed-off-by: Stefan Mogeritsch <stefan.mo.co@gmail.com>

.env.example

@@ -21,12 +21,10 @@ BACKUP_RETENTION_DAYS=7
 DOCKER_REGISTRY=git.mo-code.at/mocode-software/meldestelle
 DOCKER_TAG=latest
 DOCKER_VERSION=1.0.0-SNAPSHOT
-DOCKER_BUILD_DATE=2026-02-02T15:00:00Z
+DOCKER_BUILD_DATE=2026-03-15T12:00:00Z
 DOCKER_GRADLE_VERSION=9.3.1
-# Java 25 = Early Access; für LTS auf 21 setzen
 DOCKER_JAVA_VERSION=25
 DOCKER_NODE_VERSION=24.12.0
-# Caddy Version für den Web-App Container
 DOCKER_CADDY_VERSION=2.11-alpine
 # ARM64 spezifische JVM-Optionen (leer lassen auf x86/amd64, z.B. auf Apple Silicon)
 # Beispiel ARM64: JVM_OPTS_ARM64=-XX:UseSVE=0
@@ -43,7 +41,7 @@ POSTGRES_DB_URL=jdbc:postgresql://postgres:5432/pg-meldestelle-db
 POSTGRES_SHARED_BUFFERS=256MB
 POSTGRES_EFFECTIVE_CACHE_SIZE=768MB
 
-# --- VALKEY (formerly Redis) ---
+# --- VALKEY ---
 VALKEY_IMAGE=valkey/valkey:9-alpine
 VALKEY_PASSWORD=<SICHERES_PASSWORT>
 VALKEY_PORT=6379:6379