Clean up compiler warnings and document Ollama/LiteLLM backends

Remove unused `any_docker_mcp()` function, add `#[allow(unused_imports)]`
and `#[allow(dead_code)]` annotations to suppress false-positive warnings.
Update README.md and HOW-TO-USE.md with Ollama and LiteLLM auth backend
documentation including best-effort compatibility notices.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src-tauri/src/docker/container.rs

@@ -1143,11 +1143,6 @@ pub fn any_stdio_docker_mcp(servers: &[McpServer]) -> bool {
     servers.iter().any(|s| s.is_docker() && s.transport_type == McpTransportType::Stdio)
 }
 
-/// Returns true if any MCP server uses Docker.
-pub fn any_docker_mcp(servers: &[McpServer]) -> bool {
-    servers.iter().any(|s| s.is_docker())
-}
-
 /// Find an existing MCP container by its expected name.
 pub async fn find_mcp_container(server: &McpServer) -> Result<Option<String>, String> {
     let docker = get_docker()?;

app/src-tauri/src/docker/exec.rs

@@ -22,6 +22,7 @@ impl ExecSession {
             .map_err(|e| format!("Failed to send input: {}", e))
     }
 
+    #[allow(dead_code)]
     pub async fn resize(&self, cols: u16, rows: u16) -> Result<(), String> {
         let docker = get_docker()?;
         docker

app/src-tauri/src/docker/mod.rs

@@ -4,8 +4,13 @@ pub mod image;
 pub mod exec;
 pub mod network;
 
+#[allow(unused_imports)]
 pub use client::*;
+#[allow(unused_imports)]
 pub use container::*;
+#[allow(unused_imports)]
 pub use image::*;
+#[allow(unused_imports)]
 pub use exec::*;
+#[allow(unused_imports)]
 pub use network::*;

app/src-tauri/src/docker/network.rs

@@ -48,6 +48,7 @@ pub async fn ensure_project_network(project_id: &str) -> Result<String, String>
 }
 
 /// Connect a container to the project network.
+#[allow(dead_code)]
 pub async fn connect_container_to_network(
     container_id: &str,
     network_name: &str,

app/src-tauri/src/storage/mod.rs

@@ -3,7 +3,11 @@ pub mod secure;
 pub mod settings_store;
 pub mod mcp_store;
 
+#[allow(unused_imports)]
 pub use projects_store::*;
+#[allow(unused_imports)]
 pub use secure::*;
+#[allow(unused_imports)]
 pub use settings_store::*;
+#[allow(unused_imports)]
 pub use mcp_store::*;