feat: ClawDock - shell docker helpers for OpenClaw development (#12817)

Discussion: https://github.com/openclaw/openclaw/discussions/13528

## Checklist

- [x] **Mark as AI-assisted in the PR title or description** - Implemented by 🤖, reviewed by 👨‍💻 
- [x] **Note the degree of testing** - fully tested and I use it myself
- [x] **Include prompts or session logs if possible (super helpful!)** - I can try doing a "resume" on a few sessions, but don't think it'll provide value. Lmk if this is a blocker.
- [x] **Confirm you understand what the code does** - It's simple :)

## Summary of changes

- **ClawDock** - Shell helpers replace verbose `docker-compose` commands with simple `clawdock-*` shortcuts
- **Zero-config setup** - First run auto-detects the OpenClaw project directory from common paths and saves the config for future use
- **No extra dependencies** - Just bash
- **Built-in auth & device pairing helpers** - `clawdock-fix-token`, `clawdock-dashboard`, etc to handle gateay setup, streamline web UI, etc...
- **Updated Docker docs** - Installation docs now include the optional ClawDock helper setup for users who want simplified container management

## Example Usage

```bash
$ clawdock-help

🦞 ClawDock - Docker Helpers for OpenClaw

⚡ Basic Operations
  clawdock-start       Start the gateway
  clawdock-stop        Stop the gateway
  clawdock-restart     Restart the gateway
  clawdock-status      Check container status
  clawdock-logs        View live logs (follows)

🐚 Container Access
  clawdock-shell       Shell into container (openclaw alias ready)
  clawdock-cli         Run CLI commands (e.g., clawdock-cli status)
  clawdock-exec <cmd>  Execute command in gateway container

🌐 Web UI & Devices
  clawdock-dashboard   Open web UI in browser (auto-guides you)
  clawdock-devices     List device pairings (auto-guides you)
  clawdock-approve <id> Approve device pairing (with examples)

⚙️  Setup & Configuration
  clawdock-fix-token   Configure gateway token (run once)

🔧 Maintenance
  clawdock-rebuild     Rebuild Docker image
  clawdock-clean       ⚠️  Remove containers & volumes (nuclear)

🛠️  Utilities
  clawdock-health      Run health check
  clawdock-token       Show gateway auth token
  clawdock-cd          Jump to openclaw project directory
  clawdock-config      Open config directory (~/.openclaw)
  clawdock-workspace   Open workspace directory

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🚀 First Time Setup
  1. clawdock-start          # Start the gateway
  2. clawdock-fix-token      # Configure token
  3. clawdock-dashboard      # Open web UI
  4. clawdock-devices        # If pairing needed
  5. clawdock-approve <id>   # Approve pairing

💬 WhatsApp Setup
  clawdock-shell
    > openclaw channels login --channel whatsapp
    > openclaw status

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

💡 All commands guide you through next steps!
📚 Docs: https://docs.openclaw.ai
```\n\nCo-authored-by: Gustavo Madeira Santana <gumadeiras@gmail.com>

docs/install/docker.md

@@ -65,6 +65,24 @@ It writes config/workspace on the host:
 
 Running on a VPS? See [Hetzner (Docker VPS)](/install/hetzner).
 
+### Shell Helpers (optional)
+
+For easier day-to-day Docker management, install `ClawDock`:
+
+```bash
+mkdir -p ~/.clawdock && curl -sL https://raw.githubusercontent.com/openclaw/openclaw/main/scripts/shell-helpers/clawdock-helpers.sh -o ~/.clawdock/clawdock-helpers.sh
+```
+
+**Add to your shell config (zsh):**
+
+```bash
+echo 'source ~/.clawdock/clawdock-helpers.sh' >> ~/.zshrc && source ~/.zshrc
+```
+
+Then use `clawdock-start`, `clawdock-stop`, `clawdock-dashboard`, etc. Run `clawdock-help` for all commands.
+
+See [`ClawDock` Helper README](https://github.com/openclaw/openclaw/blob/main/scripts/shell-helpers/README.md) for details.
+
 ### Manual flow (compose)
 
 ```bash