feat(mcp): add tool presets and audit commands

- Introduce reference MCP presets with installation/audit helpers and remove legacy connector lists.
- Add CLI `owlen tools` commands to install presets or audit configuration, with optional pruning.
- Extend the TUI :tools command to support listing presets, installing them, and auditing current configuration.
- Document the preset workflow and provide regression tests for preset application.

crates/mcp/server/src/main.rs

@@ -62,7 +62,7 @@ async fn handle_request(req: &RpcRequest, root: &Path) -> Result<serde_json::Val
                 RpcError::internal_error(format!("Failed to serialize result: {}", e))
             })?)
         }
-        "resources/list" => {
+        "resources_list" => {
             let params = req
                 .params
                 .as_ref()
@@ -71,7 +71,7 @@ async fn handle_request(req: &RpcRequest, root: &Path) -> Result<serde_json::Val
                 .map_err(|e| RpcError::invalid_params(format!("Invalid params: {}", e)))?;
             resources_list(&args.path, root).await
         }
-        "resources/get" => {
+        "resources_get" => {
             let params = req
                 .params
                 .as_ref()
@@ -80,7 +80,7 @@ async fn handle_request(req: &RpcRequest, root: &Path) -> Result<serde_json::Val
                 .map_err(|e| RpcError::invalid_params(format!("Invalid params: {}", e)))?;
             resources_get(&args.path, root).await
         }
-        "resources/write" => {
+        "resources_write" => {
             let params = req
                 .params
                 .as_ref()
@@ -89,7 +89,7 @@ async fn handle_request(req: &RpcRequest, root: &Path) -> Result<serde_json::Val
                 .map_err(|e| RpcError::invalid_params(format!("Invalid params: {}", e)))?;
             resources_write(&args.path, &args.content, root).await
         }
-        "resources/delete" => {
+        "resources_delete" => {
             let params = req
                 .params
                 .as_ref()