feat: Lifecycle hooks (#219)

* flatten lifecycle hooks into RepoSettings string fields

replace the separate LifecycleHook model with setupScript and
postCheckoutScript string fields directly on RepoSettings. move the UI
into the Agent settings section alongside environment variables and
custom instructions. delete the standalone lifecycle-hooks API route,
component, and schema since the existing settings PATCH endpoint
handles the new fields automatically.

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix: pass env to lifecycle hook spawn so scripts can use package managers

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Colin McDonnell <colinmcd94@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

utils/runContext.ts

@@ -11,6 +11,8 @@ export interface Mode {
 export interface RepoSettings {
   defaultAgent: AgentName | null;
   modes: Mode[];
+  setupScript: string | null;
+  postCheckoutScript: string | null;
   repoInstructions: string;
   web: ToolPermission;
   search: ToolPermission;
@@ -26,6 +28,8 @@ export interface RunContext {
 const defaultSettings: RepoSettings = {
   defaultAgent: null,
   modes: [],
+  setupScript: null,
+  postCheckoutScript: null,
   repoInstructions: "",
   web: "enabled",
   search: "enabled",
@@ -81,7 +85,14 @@ export async function fetchRunContext(params: {
     }
 
     return {
-      settings: data.settings ?? defaultSettings,
+      settings: {
+        ...defaultSettings,
+        ...data.settings,
+        // ensure arrays are never undefined (API may omit new fields for existing repos)
+        modes: data.settings?.modes ?? [],
+        setupScript: data.settings?.setupScript ?? null,
+        postCheckoutScript: data.settings?.postCheckoutScript ?? null,
+      },
       apiToken: data.apiToken,
     };
   } catch {