feat: refactor agent step limits and enhance workflow orchestration with new findings tool

src/app/subagent/context.rs

@@ -45,7 +45,7 @@ pub fn build_subagent_context(def: &AgentDefinition) -> SubagentContext {
             Vec::new()
         }
     });
-    let max_steps = def.max_steps.unwrap_or(25);
+    let max_steps = def.max_steps.unwrap_or(usize::MAX);
     SubagentContext {
         system_prompt: String::new(),
         allowed_tools,