Refactor to use LuaJIT and improve performance

Integrate LuaJIT as an optional runtime for better performance, with a fallback to standard Lua 5.4. Update Dockerfile to install LuaJIT and create a wrapper script for execution. Enhance network module with socket fallback support and update README to reflect these changes and configuration options.

scripts/config.lua

@@ -25,7 +25,7 @@ config.SSH_IDENTITY_FILE = getenv("SSH_IDENTITY_FILE", "/root/.ssh/id_rsa")
 config.ERROR_PATTERN = getenv(
   "ERROR_PATTERN",
   ("[ERROR] Document analysis failed: connect EHOSTUNREACH %s:%d"):format(
-    config.OLLAMA_HOST, 
+    config.OLLAMA_HOST,
     config.OLLAMA_PORT
   )
 )
@@ -39,4 +39,10 @@ config.WOL_PORT = tonumber(getenv("WOL_PORT", "9"))
 -- Optional: wait for service to come up (kept commented to stay minimal)
 -- config.UP_WAIT_TIMEOUT = tonumber(getenv("UP_WAIT_TIMEOUT", "90"))
 
+-- Debug configuration
+function config.is_debug()
+  local debug_env = os.getenv("DEBUG")
+  return debug_env and (string.lower(debug_env) == "true" or debug_env == "1")
+end
+
 return config