Enhance Activepieces automation flows with restore UI and publishing

- Add "Restore Defaults" dropdown to Automations page with confirmation
- Create flows in "Defaults" folder for organization
- Pre-populate trigger sample data when creating/restoring flows
- Auto-publish flows (lock and enable) after creation
- Fix email template context variables to match template tags
- Fix dark mode logo switching in Activepieces iframe
- Add iframe refresh on flow restore
- Auto-populate business context (name, email, phone, address) in emails

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/api/activepieces.ts

@@ -0,0 +1,36 @@
+import api from './client';
+
+export interface DefaultFlow {
+  flow_type: string;
+  display_name: string;
+  activepieces_flow_id: string | null;
+  is_modified: boolean;
+  is_enabled: boolean;
+}
+
+export interface RestoreFlowResponse {
+  success: boolean;
+  flow_type: string;
+  message: string;
+}
+
+export interface RestoreAllResponse {
+  success: boolean;
+  restored: string[];
+  failed: string[];
+}
+
+export const getDefaultFlows = async (): Promise<DefaultFlow[]> => {
+  const response = await api.get('/activepieces/default-flows/');
+  return response.data.flows;
+};
+
+export const restoreFlow = async (flowType: string): Promise<RestoreFlowResponse> => {
+  const response = await api.post(`/activepieces/default-flows/${flowType}/restore/`);
+  return response.data;
+};
+
+export const restoreAllFlows = async (): Promise<RestoreAllResponse> => {
+  const response = await api.post('/activepieces/default-flows/restore-all/');
+  return response.data;
+};