Document the new `ollama launch openclaude` command as a shortcut
for running OpenClaude through a local Ollama instance. This is
now supported in Ollama's launch system and handles all environment
variable setup automatically — no manual env vars needed.
Changes:
- README.md: Add "Using Ollama's launch command" section after the
manual Ollama env var setup, and update the provider table to
list `ollama launch` as a setup path for Ollama
- docs/advanced-setup.md: Add `ollama launch` as the recommended
method at the top of the Ollama section, with the manual env var
approach kept below as an alternative
Split the setup documentation into a simple beginner path and a separate advanced path. Add OS-specific quick starts for Windows and macOS/Linux so non-technical users can copy and paste the right commands without sorting through Bun and source-build instructions.
