feat: startup git clone for template repo + pass config through

- ensure_repo_ready() at startup: clone if missing, fetch if exists
- TemplateRepoConfig gains local_path field
- list_all_templates/select_template/extract_repo_template accept repo config
- Remove hardcoded repo_dir(), use config.local_path

src/main.rs

@@ -38,6 +38,16 @@ pub struct TemplateRepoConfig {
     pub gitea_url: String,
     pub owner: String,
     pub repo: String,
+    #[serde(default = "default_repo_path")]
+    pub local_path: String,
+}
+
+fn default_repo_path() -> String {
+    if std::path::Path::new("/app/oseng-templates").is_dir() {
+        "/app/oseng-templates".to_string()
+    } else {
+        "oseng-templates".to_string()
+    }
 }
 
 #[derive(Debug, Clone, serde::Deserialize)]
@@ -84,9 +94,15 @@ async fn main() -> anyhow::Result<()> {
         }
     };
 
+    // Ensure template repo is cloned before serving
+    if let Some(ref repo_cfg) = config.template_repo {
+        template::ensure_repo_ready(repo_cfg).await;
+    }
+
     let agent_mgr = agent::AgentManager::new(
         database.pool.clone(),
         config.llm.clone(),
+        config.template_repo.clone(),
         kb_arc.clone(),
     );