fix: resolve health check issues and update service configurations

- Fix MailHog health check: replace --no-verbose with -q and --tries with BusyBox-compatible options
- Fix InfluxDB health check: replace wget with curl (wget not available in container)
- Fix Pi-hole health check: replace wget with curl and remove user directive (requires root)
- Update Docker image versions with specific stable tags:
  * InfluxDB: 2.7.10
  * Wakapi: v2.7.1
  * ArchiveBox: v0.7.3
  * TubeArchivist: v0.5.8 (correct repository bbilly1/tubearchivist)
- Update README.md service table with correct ports and IP addresses
- Add MailHog configuration variables to demo.env
- Update demo-stack.sh status display to include Wakapi and MailHog URLs
- All services now showing as healthy in Homepage dashboard

SupportStack/demo/demo.env

@@ -29,6 +29,9 @@ COMPOSE_NETWORK_NAME=tsysdevstack-supportstack-demo-network
 # Developer Tools
 HOMEPAGE_PORT=4000
 ATOMIC_TRACKER_PORT=4012
+WAKAPI_PORT=4015
+MAILHOG_SMTP_PORT=4016
+MAILHOG_WEB_PORT=4017
 
 # Archival & Content Management
 ARCHIVEBOX_PORT=4013
@@ -80,6 +83,19 @@ ATOMIC_TRACKER_LISTENING_PORT=8080
 ATOMIC_TRACKER_BYPASS_LOGIN=1
 ATOMIC_TRACKER_USE_DUMMY_DATA=1
 
+# Wakapi Configuration
+WAKAPI_DATA_DIR=/data
+WAKAPI_DB_TYPE=sqlite3
+WAKAPI_DB_PATH=/data/wakapi.db
+WAKAPI_PASSWORD_SALT=demo_salt_only
+WAKAPI_INSECURE_COOKIES=true
+WAKAPI_ENVIRONMENT=production
+
+# MailHog Configuration
+MAILHOG_SMTP_BIND_ADDR=0.0.0.0:1025
+MAILHOG_WEB_BIND_ADDR=0.0.0.0:8025
+MAILHOG_STORAGE=memory
+
 # ArchiveBox Configuration
 ARCHIVEBOX_DATA_DIR=/data