docs: Update for unified SvelteKit + FastAPI architecture. Added autonomous SvelteKit build process and updated cheatsheet commands.

env.default

@@ -115,6 +115,14 @@ AE_API_JWT_KEY="your-22-char-secret-key"
 # Regex for allowed CORS origins
 AE_API_ORIGINS_REGEX="(https://.*\.oneskyit\.com)|(https://.*\.oneskyit\.com:4443)"
 
+# ------------------------------------------------------------------------------
+# APP SETTINGS (SvelteKit)
+# ------------------------------------------------------------------------------
+AE_APP_ENV=development
+AE_APP_BUILD_MODE=staging
+AE_APP_REPLICAS=1
+AE_APP_NODE_PORT=3001
+
 # ------------------------------------------------------------------------------
 # SMTP SETTINGS (Email)
 # ------------------------------------------------------------------------------
@@ -125,13 +133,13 @@ AE_SMTP_USERNAME=send_mail
 AE_SMTP_PASSWORD="your-smtp-password-here"
 
 # ------------------------------------------------------------------------------
-# APP SETTINGS (Legacy Flask)
+# LEGACY APP SETTINGS (Flask)
 # ------------------------------------------------------------------------------
-AE_APP_ENV=development
-AE_APP_GUNICORN_PORT=5055
-AE_APP_CACHE_SECRET_KEY="your-secret-key"
-AE_APP_SESSION_LIFETIME=86400
-AE_APP_CACHE_TIMEOUT=5
+AE_FLASK_APP_ENV=development
+AE_FLASK_APP_GUNICORN_PORT=5055
+AE_FLASK_APP_CACHE_SECRET_KEY="your-secret-key"
+AE_FLASK_APP_SESSION_LIFETIME=86400
+AE_FLASK_APP_CACHE_TIMEOUT=5
 
 # ------------------------------------------------------------------------------
 # SOURCE PATHS (Absolute paths on Host Machine)
@@ -141,7 +149,8 @@ AE_APP_CACHE_TIMEOUT=5
 
 # Project Source Code
 AE_API_SRC=/path/to/aether_api_fastapi
-AE_APP_SRC=/path/to/aether_app_flask
+AE_APP_SRC=/path/to/aether_app_sveltekit
+AE_FLASK_APP_SRC=/path/to/aether_app_flask
 
 # Physical File Storage (Images, Documents, etc.)
 # NOTE: Shared between environments to ensure binary availability