fix: include full recipe parameter details in load/discovery output (#9233)

Signed-off-by: Douwe Osinga <douwe@squareup.com>
Co-authored-by: Douwe Osinga <douwe@squareup.com>

crates/goose/src/agents/platform_extensions/summon.rs

@@ -9,7 +9,7 @@ use crate::config::{Config, GooseMode};
 use crate::providers;
 use crate::recipe::build_recipe::build_recipe_from_template;
 use crate::recipe::local_recipes::load_local_recipe_file;
-use crate::recipe::{Recipe, Settings, RECIPE_FILE_EXTENSIONS};
+use crate::recipe::{Recipe, RecipeParameter, Settings, RECIPE_FILE_EXTENSIONS};
 use crate::session::extension_data::EnabledExtensionsState;
 use crate::session::SessionType;
 use crate::sources::parse_frontmatter;
@@ -647,7 +647,16 @@ impl SummonClient {
 
         match load_local_recipe_file(&sr.path) {
             Ok(recipe_file) => match Recipe::from_content(&recipe_file.content) {
-                Ok(recipe) => recipe.instructions.unwrap_or_default(),
+                Ok(recipe) => {
+                    let mut content = recipe.instructions.unwrap_or_default();
+                    if let Some(params) = &recipe.parameters {
+                        if !params.is_empty() {
+                            content.push_str("\n\n");
+                            content.push_str(&Self::format_parameters(params));
+                        }
+                    }
+                    content
+                }
                 Err(_) => recipe_file.content,
             },
             Err(_) => String::new(),
@@ -711,10 +720,8 @@ impl SummonClient {
                 let mut desc = recipe.description.clone();
 
                 if let Some(params) = &recipe.parameters {
-                    let param_names: Vec<&str> = params.iter().map(|p| p.key.as_str()).collect();
-                    if !param_names.is_empty() {
-                        let params_str = param_names.join(", ");
-                        desc = format!("{} (params: {})", desc, params_str);
+                    if !params.is_empty() {
+                        desc = format!("{}\n{}", desc, Self::format_parameters(params));
                     }
                 }
 
@@ -725,6 +732,24 @@ impl SummonClient {
         format!("Subrecipe from {}", sr.path)
     }
 
+    fn format_parameters(params: &[RecipeParameter]) -> String {
+        let mut out = String::from("Parameters:");
+        for p in params {
+            let mut detail = format!("\n  - {} ({}, {})", p.key, p.input_type, p.requirement);
+            if let Some(default) = &p.default {
+                detail.push_str(&format!(", default: \"{}\"", default));
+            }
+            if let Some(options) = &p.options {
+                if !options.is_empty() {
+                    detail.push_str(&format!(", options: [{}]", options.join(", ")));
+                }
+            }
+            detail.push_str(&format!(": {}", p.description));
+            out.push_str(&detail);
+        }
+        out
+    }
+
     async fn handle_load(
         &self,
         session_id: &str,