profile list / config show only report the saved default profile, not the
app/profile a specific invocation actually resolves to (especially under
--profile or LARKSUITE_CLI_PROFILE). Rename the misleading profile list
JSON field active -> default (it is the configured default, not the one in
effect), and point config show / profile list / profile help at
lark-cli whoami --json for the identity actually used now. Restructure the
lark-shared skill profile guidance as an intent -> command table.