feat: Add SearXNG module and update infrastructure

- Introduced a new SearXNG module with configuration for Kubernetes deployment, service, and ingress.
- Updated existing Terraform app modules to include SearXNG in both dev-01 and prod-01 environments.
- Added necessary variables and secrets for SearXNG in the respective Terraform files.
- Updated Dockerfiles for llama.cpp and ollama to use latest versions.
- Enhanced security and hardening defaults in Kubernetes deployments.
- Improved documentation for Copilot instructions and Terraform workflows.

terraform/modules/apps/open-webui/variables.tf

@@ -11,7 +11,7 @@ variable "fqdn" {
 variable "tag" {
   description = "The version of app to install"
   type        = string
-  default     = "main"
+  default     = "v0.8.12"
 }
 
 variable "issuer" {
@@ -32,7 +32,6 @@ variable "ollama_proxy" {
   default = {
     enabled = false
   }
-
 }
 
 variable "secret_key" {