feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/console/core/script/create-coupon.ts

@@ -0,0 +1,24 @@
+import { Database } from "../src/drizzle/index.js"
+import { CouponTable, CouponType } from "../src/schema/billing.sql.js"
+
+const email = process.argv[2]
+const type = process.argv[3] as (typeof CouponType)[number]
+
+if (!email || !type) {
+  console.error(`Usage: bun create-coupon.ts <email> <${CouponType.join("|")}>`)
+  process.exit(1)
+}
+
+if (!(CouponType as readonly string[]).includes(type)) {
+  console.error(`Error: type must be one of ${CouponType.join(", ")}`)
+  process.exit(1)
+}
+
+await Database.use((tx) =>
+  tx.insert(CouponTable).values({
+    email,
+    type,
+  }),
+)
+
+console.log(`Created ${type} coupon for ${email}`)