Bug Description

The browser profile driver schema in zod-schema.ts only accepts "clawd" (legacy project name) and "extension", but:

1. The TypeScript type at types.browser.ts:7 defines driver?: "openclaw" | "extension"
2. The runtime code at browser/config.ts:320 normalizes to "openclaw" as the default
3. Tests at browser/config.test.ts:16,21 expect "openclaw" as the resolved driver value

Users setting browser.profiles.*.driver: "openclaw" get a validation error because the schema only accepts "clawd".

Steps to Reproduce

browser:
  profiles:
    default:
      cdpPort: 9222
      driver: "openclaw"
      color: "#ff0000"

This config is rejected by validateConfigObject().

Root Cause

The project was renamed from "clawd" to "openclaw" but the Zod schema wasn't updated to accept the new name.