refactor: remove unnecessary static template wrappers

- Remove template wrapper files for static config files that don't use variables
- Keep only inventory.yml.tera wrapper that actually needs variable substitution
- Update documentation to reflect the simplified approach
- Static files are now copied directly without template processing
- Reduce code maintenance burden and improve performance

Benefits:
- Less code to maintain
- Simpler architecture
- Faster processing for static files
- Easier to add new templates when needed

Author: josecelano

src/template/context.rs

@@ -4,11 +4,6 @@
 
 use serde::Serialize;
 
-pub trait TemplateContext {
-    // Marker trait for template contexts
-    // No required methods - let Tera handle validation during rendering
-}
-
 /// Context for static templates (no variables needed)
 #[derive(Serialize, Clone, Debug)]
 pub struct StaticContext {

src/template/wrappers/ansible/ansible_cfg.rs

@@ -2,7 +2,6 @@
 //!
 //! This template has mandatory variables that must be provided at construction time.
 
-use crate::template::context::TemplateContext;
 use crate::template::{StaticContext, TemplateRenderer};
 use anyhow::{Context, Result};
 use serde::Serialize;
@@ -21,15 +20,11 @@ struct InventoryContext {
     ansible_ssh_private_key_file: String,
 }
 
-impl TemplateContext for InventoryContext {
-    // No required methods - Tera handles validation
-}
-
 impl InventoryTemplate {
     /// Creates a new `InventoryTemplate`, validating the template content and variable substitution
     ///
     /// # Errors
-    /// 
+    ///
     /// Returns an error if:
     /// - Template syntax is invalid
     /// - Required variables cannot be substituted
@@ -46,6 +41,7 @@ impl InventoryTemplate {
 
         // Create template engine and validate rendering
         let template_name = "inventory.yml";
+
         let engine =
             crate::template::TemplateEngine::with_template_content(template_name, template_content)
                 .with_context(|| "Failed to create template engine with content")?;

src/template/wrappers/ansible/install_docker.rs

@@ -1,16 +1,8 @@
 //! Ansible template wrappers
 //!
-//! One module per template file in templates/ansible/
-
-pub mod ansible_cfg;
-pub mod install_docker;
-pub mod install_docker_compose;
+//! Contains wrappers only for template files that actually need variable substitution
+//! and have the `.tera` extension. Static playbooks and config files are copied directly.
 pub mod inventory;
-pub mod wait_cloud_init;
 
 // Re-export the main template structs for easier access
-pub use ansible_cfg::AnsibleCfgTemplate;
-pub use install_docker::InstallDockerTemplate;
-pub use install_docker_compose::InstallDockerComposeTemplate;
 pub use inventory::InventoryTemplate;
-pub use wait_cloud_init::WaitCloudInitTemplate;