Mention Arch AUR (#1286)

* Arch Linux installation instructions

* Include Arch Linux installation instructions for OpenClaude

* Apply suggestions from code review

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* docs: Update installation instructions for Arch Linux

* docs: Clarify Arch Linux installation instructions and AUR usage

* Grammar fix

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

README.md

@@ -68,6 +68,11 @@ OpenClaude is also mirrored to GitLawb:
 npm install -g @gitlawb/openclaude@latest
 ```
 
+If you're on Arch Linux, you can install OpenClaude from the community-maintained [AUR package](https://aur.archlinux.org/packages/openclaude):
+```bash
+paru -S openclaude
+```
+
 If the install later reports `ripgrep not found`, install ripgrep system-wide and confirm `rg --version` works in the same terminal before starting OpenClaude.
 
 **Verify / troubleshoot installed version:**

docs/quick-start-mac-linux.md

@@ -20,7 +20,11 @@ npm --version
 ```bash
 npm install -g @gitlawb/openclaude@latest
 ```
+On Arch Linux, you can alternatively install OpenClaude via the community-maintained [AUR package](https://aur.archlinux.org/packages/openclaude):
 
+```bash
+paru -S openclaude
+```
 ## 3. Pick One Provider
 
 ### Option A: OpenAI
@@ -128,16 +132,29 @@ Check the basics:
 
 ## 6. Updating OpenClaude
 
+**Via npm:**
 ```bash
 npm install -g @gitlawb/openclaude@latest
 ```
 
+**Via AUR:**
+```bash
+paru
+```
+*(Or use your preferred AUR helper like `yay -Syu`)*
+
 ## 7. Uninstalling OpenClaude
 
+**Via npm:**
 ```bash
 npm uninstall -g @gitlawb/openclaude
 ```
 
+**Via AUR (Arch Linux):**
+```bash
+paru -Rns openclaude
+```
+
 ## Need Advanced Setup?
 
 Use: