User configurable templates (#6420)

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

crates/goose/src/agents/extension_manager.rs

@@ -848,7 +848,7 @@ impl ExtensionManager {
         let mut context: HashMap<&str, Value> = HashMap::new();
         context.insert("tools", serde_json::to_value(tools_info).unwrap());
 
-        prompt_template::render_global_file("plan.md", &context).expect("Prompt should render")
+        prompt_template::render_template("plan.md", &context).expect("Prompt should render")
     }
 
     /// Find and return a reference to the appropriate client for a tool call

crates/goose/src/agents/prompt_manager.rs

@@ -161,9 +161,9 @@ impl<'a> SystemPromptBuilder<'a, PromptManager> {
 
         let base_prompt = if let Some(override_prompt) = &self.manager.system_prompt_override {
             let sanitized_override_prompt = sanitize_unicode_tags(override_prompt);
-            prompt_template::render_inline_once(&sanitized_override_prompt, &context)
+            prompt_template::render_string(&sanitized_override_prompt, &context)
         } else {
-            prompt_template::render_global_file("system.md", &context)
+            prompt_template::render_template("system.md", &context)
         }
         .unwrap_or_else(|_| {
             "You are a general-purpose AI agent called goose, created by Block".to_string()
@@ -245,7 +245,7 @@ impl PromptManager {
 
     pub async fn get_recipe_prompt(&self) -> String {
         let context: HashMap<&str, Value> = HashMap::new();
-        prompt_template::render_global_file("recipe.md", &context)
+        prompt_template::render_template("recipe.md", &context)
             .unwrap_or_else(|_| "The recipe prompt is busted. Tell the user.".to_string())
     }
 }

crates/goose/src/agents/subagent_handler.rs

@@ -1,7 +1,7 @@
 use crate::{
     agents::{subagent_task_config::TaskConfig, Agent, AgentConfig, AgentEvent, SessionConfig},
     conversation::{message::Message, Conversation},
-    prompt_template::render_global_file,
+    prompt_template::render_template,
     recipe::Recipe,
 };
 use anyhow::{anyhow, Result};
@@ -148,7 +148,7 @@ fn get_agent_messages(
             .await;
 
         let tools = agent.list_tools(&session_id, None).await;
-        let subagent_prompt = render_global_file(
+        let subagent_prompt = render_template(
             "subagent_system.md",
             &SubagentPromptContext {
                 max_turns: task_config