v1.1.1 — Public MIT release

• Make the PartyKeys Development Foundation repository publicly accessible\n- License the protocol implementations, source code, tests, and original technical documentation under MIT\n- Keep Salamander samples under CC BY 3.0\n- Exclude PartyKeys / 音乐密码 trademarks, logos, and official product renders from the MIT grant\n- Remove internal workspace reference snapshots from the public branch