refactor: remove api/docker types, add toolset type

refactor: strip MCP/skills from server, enhance skills with references/scripts/assets

feat: AuroraCoder-styled management UI, light mode default, auth fix

feat: add docker tool type with client-side approval

feat: add skill support to server + skill publish CLI command

fix(management): shift UI from 'create from scratch' to 'connect to existing / register from file'

AgentToolStore v2: MCP client + Skills manager + MCP server + Registry