feat: auto-approve UI + session status approved

- sessions POST: look up coolifyServiceUuid, pass autoApprove:true to runner
- sessions PATCH: approved added to terminal statuses (sets completed_at)
- build/page.tsx: approved status, STATUS_COLORS/LABELS for "Shipped",
  auto-committed UI in changed files panel, bottom bar for approved state
- Architecture doc: fully updated with current state

Made-with: Cursor

app/api/projects/[projectId]/agent/sessions/[sessionId]/route.ts

@@ -88,7 +88,7 @@ export async function PATCH(
     if (body.status) {
       updates.push(`status = $${idx++}`);
       values.push(body.status);
-      if (body.status === "done" || body.status === "failed" || body.status === "stopped") {
+      if (["done", "approved", "failed", "stopped"].includes(body.status)) {
         updates.push(`completed_at = now()`);
       }
     }