feat: unify scheduled tasks from #337 and #338 with security-first integration

Unifies scheduled task capabilities and consolidates overlapping implementations from #337 and #338 into a single security-first integration path.\n\nCo-authored-by: Edvard <ecschoye@stud.ntnu.no>\nCo-authored-by: stawky <stakeswky@gmail.com>

src/gateway/mod.rs

@@ -267,6 +267,7 @@ pub async fn run_gateway(host: &str, port: u16, config: Config) -> Result<()> {
         &config.workspace_dir,
         &config.agents,
         config.api_key.as_deref(),
+        &config,
     ));
     let skills = crate::skills::load_skills(&config.workspace_dir);
     let tool_descs: Vec<(&str, &str)> = tools_registry