Introduces configurable test database for bug reports

Enables switching between production and testing MySQL databases based on the `ENABLE_TEST_DB` environment variable and an `X-DB-ENV` request header.

Applies this dual database functionality primarily to bug report submission and administration features. New `TESTING_MYSQL_` environment variables are added for defining test database credentials.

Refines HTTP request logging by excluding health checks and admin session validation endpoints to reduce noise. Allows `/health` endpoints to bypass API and Admin key guards.

Temporarily disables HWID-based rate limiting for bug report submissions.

.env.example

@@ -1,4 +1,4 @@
-# MySQL
+# MySQL Production DB
 MYSQL_HOST=mysql
 MYSQL_PORT=3306
 MYSQL_USER=emly
@@ -6,10 +6,21 @@ MYSQL_PASSWORD=change_me_in_production
 MYSQL_DATABASE=emly_bugreports
 MYSQL_ROOT_PASSWORD=change_root_password
 
+# MySQL Testing DB (if ENABLE_TEST_DB is true)
+TESTING_MYSQL_HOST=mysql
+TESTING_MYSQL_PORT=3306
+TESTING_MYSQL_USER=emly
+TESTING_MYSQL_PASSWORD=change_me_in_production
+TESTING_MYSQL_DATABASE=emly_bugreports
+TESTING_MYSQL_ROOT_PASSWORD=change_root_password
+
 # API Keys
 API_KEY=change_me_client_key
 ADMIN_KEY=change_me_admin_key
 
+# Hostname
+HOSTNAME=amazing-kobold
+
 # Server
 PORT=3000
 DASHBOARD_PORT=3001
@@ -18,6 +29,9 @@ DASHBOARD_PORT=3001
 RATE_LIMIT_MAX=5
 RATE_LIMIT_WINDOW_HOURS=24
 
+# Test DB flag
+ENABLE_TEST_DB = false
+
 # Cloudflare Tunnel
 CLOUDFLARE_TUNNEL_TOKEN=change_me_cloudflare_tunnel_token
-CLOUDFLARE_TUNNEL_TOKEN_DEV=change_me_cloudflare_tunnel_token
+CLOUDFLARE_TUNNEL_TOKEN_DEV=change_me_cloudflare_tunnel_token