chore: initial commit

Laimiao agent v2 service: agent orchestration, sessions, billing,
gateway client, skills catalog, auth, config, plus tests.

tests/pricing.test.ts

@@ -0,0 +1,74 @@
+import { describe, expect, it } from "vitest";
+import { PricingError, quoteSkill, repriceForQuantity } from "../src/billing/pricing.js";
+import type { SkillDefinition } from "../src/types.js";
+
+const skill: SkillDefinition = {
+  key: "demo",
+  name: "demo",
+  displayName: "Demo Skill",
+  description: "demo",
+  content: "# demo",
+  triggerKeywords: "demo",
+  usesDefaults: false,
+  manifest: {
+    key: "demo",
+    version: "1.0.0",
+    industry: "test",
+    model: "seedream@5.0",
+    defaults: { size: "1024x1536", n: 1 },
+    price: { currency: "credits", per_image: 30, size_multipliers: { "2048x3072": 2 } },
+    capabilities: [],
+    tags: [],
+    max_images: 4,
+    enabled: true,
+  },
+};
+
+describe("pricing", () => {
+  it("quotes one image using defaults", () => {
+    expect(quoteSkill(skill, { size: "1024x1536", quantity: 1 }, {}, "dry_run")).toEqual({
+      skill_id: "demo",
+      skill_name: "Demo Skill",
+      model: "seedream@5.0",
+      size: "1024x1536",
+      quantity: 1,
+      unit_credits: 30,
+      size_multiplier: 1,
+      total_credits: 30,
+      currency: "credits",
+      billing_mode: "dry_run",
+    });
+  });
+
+  it("applies size multipliers and quantity", () => {
+    const quote = quoteSkill(
+      skill,
+      { size: "1024x1536", quantity: 1 },
+      { size: "2048x3072", quantity: 3 },
+      "off",
+    );
+    expect(quote.size_multiplier).toBe(2);
+    expect(quote.total_credits).toBe(180);
+    expect(quote.billing_mode).toBe("off");
+  });
+
+  it("rejects over-limit, non-integer, and malformed sizes", () => {
+    expect(() => quoteSkill(skill, { size: "1024x1536", quantity: 1 }, { quantity: 5 }, "dry_run")).toThrow(
+      PricingError,
+    );
+    expect(() => quoteSkill(skill, { size: "1024x1536", quantity: 1 }, { quantity: 1.5 }, "dry_run")).toThrow(
+      /integer/,
+    );
+    expect(() => quoteSkill(skill, { size: "1024x1536", quantity: 1 }, { size: "large" }, "dry_run")).toThrow(
+      /size/,
+    );
+  });
+
+  it("reprices to the actually returned image count", () => {
+    const quote = quoteSkill(skill, { size: "1024x1536", quantity: 1 }, { quantity: 3 }, "dry_run");
+    const repriced = repriceForQuantity(quote, 1);
+    expect(repriced.quantity).toBe(1);
+    expect(repriced.total_credits).toBe(30);
+    expect(() => repriceForQuantity(quote, -1)).toThrow(PricingError);
+  });
+});