docs: remove hermes setup from install flow, point to hermes model/tools instead

The installer already handles full setup (provider config, etc.), so
telling users to run 'hermes setup' post-install is redundant and
confusing. Updated all docs to reflect the correct flow:

1. Run the installer (handles everything including provider setup)
2. Use 'hermes model', 'hermes tools', 'hermes gateway setup' to
   reconfigure individual settings later

Files updated:
- README.md: removed setup from quick install & getting started
- installation.md: updated post-install, manual step 9, troubleshooting
- quickstart.md: updated provider section & quick reference table
- cli-commands.md: updated hermes setup description
- faq.md: replaced hermes setup references with specific commands

website/docs/getting-started/quickstart.md

@@ -29,10 +29,10 @@ source ~/.bashrc   # or source ~/.zshrc
 
 ## 2. Set Up a Provider
 
-The installer runs the setup wizard automatically. If you skipped it, run:
+The installer configures your LLM provider automatically. To change it later, run:
 
 ```bash
-hermes setup
+hermes model
 ```
 
 This walks you through selecting an inference provider:
@@ -160,7 +160,6 @@ mcp_servers:
 | Command | Description |
 |---------|-------------|
 | `hermes` | Start chatting |
-| `hermes setup` | Configure providers and settings |
 | `hermes model` | Switch provider or model |
 | `hermes tools` | Configure which tools are enabled per platform |
 | `hermes doctor` | Diagnose issues |