feat: add uninstall instructions and new commands for CLI

cli.mdx

@@ -76,3 +76,21 @@ chatwoot convs --help
 ```
 
 Issues and feedback: [github.com/chatwoot/cli](https://github.com/chatwoot/cli).
+
+## Uninstalling
+
+```bash
+chatwoot auth logout              # remove API key from the OS keyring
+rm -rf ~/.chatwoot                # delete config (~/.chatwoot/config.yaml)
+rm "$(command -v chatwoot)"       # delete the binary
+```
+
+If you set up shell completions, also remove them:
+
+```bash
+rm -f ~/.local/share/bash-completion/completions/chatwoot   # bash
+rm -f ~/.config/fish/completions/chatwoot.fish              # fish
+# zsh: delete the `source <(... completion zsh -c)` line from ~/.zshrc
+```
+
+On Windows, delete the extracted `chatwoot.exe` and the `%USERPROFILE%\.chatwoot` folder. If `CHATWOOT_API_KEY` is set in your environment, unset it in your shell rc — `auth logout` can't remove env-provided credentials.

cli/commands.mdx

@@ -68,6 +68,12 @@ chatwoot conv 123 label billing,urgent         # sets labels (replaces existing)
 chatwoot conv 123 priority urgent              # urgent | high | medium | low | none
 ```
 
+**Contact:**
+
+```bash
+chatwoot conv 123 contact                      # view the contact (sender) for this conversation
+```
+
 ## Contacts
 
 ```bash
@@ -104,6 +110,14 @@ chatwoot config path                           # print config file path
 chatwoot config view                           # print config and credential source
 ```
 
+## Version
+
+```bash
+chatwoot version                               # print the CLI version
+chatwoot version --check                       # check GitHub for a newer release
+chatwoot --version                             # same as `version`, as a flag
+```
+
 ## Global flags
 
 | Flag | Short | Description |