refactor: Removed the use of the tools.txt file and added tool visibility declarations to the global configuration file

src/config/mod.rs

@@ -73,7 +73,6 @@ const FUNCTIONS_DIR_NAME: &str = "functions";
 const FUNCTIONS_BIN_DIR_NAME: &str = "bin";
 const AGENTS_DIR_NAME: &str = "agents";
 const GLOBAL_TOOLS_DIR_NAME: &str = "tools";
-const GLOBAL_TOOLS_FILE_NAME: &str = "tools.txt";
 const GLOBAL_TOOLS_UTILS_DIR_NAME: &str = "utils";
 const BASH_PROMPT_UTILS_FILE_NAME: &str = "prompt-utils.sh";
 const MCP_FILE_NAME: &str = "mcp.json";
@@ -132,6 +131,7 @@ pub struct Config {
     pub function_calling: bool,
     pub mapping_tools: IndexMap<String, String>,
     pub use_tools: Option<String>,
+    pub visible_tools: Option<Vec<String>>,
 
     pub mcp_servers: bool,
     pub mapping_mcp_servers: IndexMap<String, String>,
@@ -217,6 +217,7 @@ impl Default for Config {
             function_calling: true,
             mapping_tools: Default::default(),
             use_tools: None,
+            visible_tools: None,
 
             mcp_servers: true,
             mapping_mcp_servers: Default::default(),
@@ -486,10 +487,6 @@ impl Config {
         Self::functions_dir().join(MCP_FILE_NAME)
     }
 
-    pub fn global_tools_file() -> PathBuf {
-        Self::functions_dir().join(GLOBAL_TOOLS_FILE_NAME)
-    }
-
     pub fn global_tools_dir() -> PathBuf {
         Self::functions_dir().join(GLOBAL_TOOLS_DIR_NAME)
     }
@@ -2828,7 +2825,7 @@ impl Config {
     }
 
     fn load_functions(&mut self) -> Result<()> {
-        self.functions = Functions::init()?;
+        self.functions = Functions::init(self.visible_tools.as_ref().unwrap_or(&Vec::new()))?;
         Ok(())
     }