feat: self-serve signup Phase 2 (frontend cutover) (#162)

Co-authored-by: Michael Chihlas <michael@resolutionflow.com>
Co-committed-by: Michael Chihlas <michael@resolutionflow.com>

frontend/src/api/plans.ts

@@ -0,0 +1,22 @@
+import apiClient from './client'
+
+export interface PublicPlanResponse {
+  plan: string
+  display_name: string
+  description: string | null
+  monthly_price_cents: number | null
+  annual_price_cents: number | null
+  max_seats: number | null
+  sort_order: number
+  is_public: boolean
+}
+
+export const plansApi = {
+  /** Public plan catalog for the marketing /pricing page. No auth. */
+  async getPublic(): Promise<PublicPlanResponse[]> {
+    const response = await apiClient.get<PublicPlanResponse[]>('/plans/public')
+    return response.data
+  },
+}
+
+export default plansApi