3.5.0

AI generated. Reviewed by Johnny.

This release makes jd agent-setup the one home for setup. The
johnnydecimal.com MCP server's install_cli tool clones this repo and
then sends the agent to this prompt. The prompt no longer sends the
agent back to the server.

Changes

• The prompt carries the safety rules that lived in the server's text
  before: name the package manager before jq is installed, add to an
  existing config and never overwrite it, JD_CONFIG overrides the
  file's location, the rc file for each shell with config.fish for
  fish, show the line and the file before writing, never add the source
  line twice, append and never reorder, resolve a symlinked rc file
  and say where the real file lives, and touch no other file.
• Step 3 sends a bought system that is not on disk to the server's
  install_system tool, which builds it and writes the config.
• Step 8 offers the zsh prompt both ways, _jd_pwd in the user's own
  prompt or Johnny's theme, and warns that the theme sets PROMPT
  whatever was there. Nothing is added without a yes.
• The line "If you have the Johnny.Decimal MCP server, call its
  install_cli tool" is gone.
• test/cases/setup.sh checks the new lines and that install_cli is
  no longer named.