docs: update openclaw install URLs to install.cmem.ai

Replace raw.githubusercontent.com URLs with install.cmem.ai/openclaw.sh
across install script, SKILL.md, and docs. Add OpenClaw section with
install one-liner to README.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/public/openclaw-integration.mdx

@@ -263,6 +263,29 @@ The feed only sends `new_observation` events — not raw tool usage. Observation
 
 ## Installation
 
+Run this one-liner to install everything automatically:
+
+```bash
+curl -fsSL https://install.cmem.ai/openclaw.sh | bash
+```
+
+The installer handles dependency checks (Bun, uv), plugin installation, memory slot configuration, AI provider setup, worker startup, and optional observation feed configuration.
+
+You can also pre-select options:
+
+```bash
+# With a specific AI provider
+curl -fsSL https://install.cmem.ai/openclaw.sh | bash -s -- --provider=gemini --api-key=YOUR_KEY
+
+# Fully unattended (defaults to Claude Max Plan)
+curl -fsSL https://install.cmem.ai/openclaw.sh | bash -s -- --non-interactive
+
+# Upgrade existing installation
+curl -fsSL https://install.cmem.ai/openclaw.sh | bash -s -- --upgrade
+```
+
+### Manual Configuration
+
 Add `claude-mem` to your OpenClaw gateway's plugin configuration:
 
 ```json