0.15.0

Changed — may break callers

• wa mcp serve with no profile is refused; name what it serves. Run wa <profile> mcp serve for one profile,
  wa mcp serve --profiles work,personal for a list, or wa mcp serve --profiles all for every profile. With none it
  exits 2 with validation_error and lists the profiles. The same holds for --http, mcp revoke,
  mcp server start|stop|status and mcp config. An app entry that runs wa mcp serve with no profile stops
  working: print it again with wa mcp config --profiles all, or wa <profile> mcp config. The MCP Registry entry
  now runs wa mcp serve --profiles all (cli-core 0.470.0).
• cli-core 0.473.0. Every message wa prints says whether you sent it (sender_is_me). A failed run's record
  keeps the network's error code (runs show, error.cause_code). --offline --transcribe lists the voice messages
  it could not transcribe under missing, with the command that does.