0.53.0

Added

• zm mcp with no profile serves every profile over stdio (cli-core 0.450.0). An AI app needs one connector for
  Zoom, not one per profile. Each tool takes a required profile (every profile here, no default) and the agent is
  told to ask when you did not name the account; the call runs in that profile's own zm <profile> mcp, with its own
  permissions. zm <profile> mcp is unchanged. The MCP Registry entry starts zm mcp with no profile.

Fixed

• Every command spends less time getting ready (cli-base 0.62.0, cli-core 0.449.0). The check of shared commands now
  describes each command once, not again for every group above it. It was about 60% of each command's setup; in tg a
  warm run(["--version"]) went from 49 to 29 ms. It catches the same changes as before.
• bin/release no longer says a release failed while its run is still going. gh run watch also stops with an
  error when one of its own requests to GitHub fails; the script now watches the run again and decides from the run's
  result.