feat(costs): add billing, quota, and budget control plane

packages/shared/src/validators/budget.ts

@@ -0,0 +1,37 @@
+import { z } from "zod";
+import {
+  BUDGET_INCIDENT_RESOLUTION_ACTIONS,
+  BUDGET_METRICS,
+  BUDGET_SCOPE_TYPES,
+  BUDGET_WINDOW_KINDS,
+} from "../constants.js";
+
+export const upsertBudgetPolicySchema = z.object({
+  scopeType: z.enum(BUDGET_SCOPE_TYPES),
+  scopeId: z.string().uuid(),
+  metric: z.enum(BUDGET_METRICS).optional().default("billed_cents"),
+  windowKind: z.enum(BUDGET_WINDOW_KINDS).optional().default("calendar_month_utc"),
+  amount: z.number().int().nonnegative(),
+  warnPercent: z.number().int().min(1).max(99).optional().default(80),
+  hardStopEnabled: z.boolean().optional().default(true),
+  notifyEnabled: z.boolean().optional().default(true),
+  isActive: z.boolean().optional().default(true),
+});
+
+export type UpsertBudgetPolicy = z.infer<typeof upsertBudgetPolicySchema>;
+
+export const resolveBudgetIncidentSchema = z.object({
+  action: z.enum(BUDGET_INCIDENT_RESOLUTION_ACTIONS),
+  amount: z.number().int().nonnegative().optional(),
+  decisionNote: z.string().optional().nullable(),
+}).superRefine((value, ctx) => {
+  if (value.action === "raise_budget_and_resume" && typeof value.amount !== "number") {
+    ctx.addIssue({
+      code: z.ZodIssueCode.custom,
+      message: "amount is required when raising a budget",
+      path: ["amount"],
+    });
+  }
+});
+
+export type ResolveBudgetIncident = z.infer<typeof resolveBudgetIncidentSchema>;