feat: initial companion repo for OpenClaw vs Claude Code article

40 files demonstrating every major OpenClaw capability using Claude Code:
- 3 agents (researcher, writer, reviewer)
- 3 skills (daily-briefing, slack-message, web-research)
- 2 security hooks (pre-tool-use blocker, post-tool-use logger)
- 10 self-contained examples with copy-paste prompts
- Complete feature map (20 capabilities, 11 full match, 7 different, 2 gap)
- Security docs including NemoClaw comparison
- Automation, messaging, browser, memory documentation

Zero dependencies. Clone and run.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

messaging/slack-setup.md

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+# Slack Setup via MCP
+
+## 1. Create a Slack App
+
+Go to https://api.slack.com/apps and click "Create New App".
+Choose "From scratch". Give it a name and select your workspace.
+
+## 2. Add Bot Token Scopes
+
+Navigate to "OAuth & Permissions" in the sidebar.
+Under "Bot Token Scopes", add:
+- `chat:write` - post messages
+- `channels:read` - list channels
+- `channels:history` - read messages (if needed)
+
+## 3. Install to workspace
+
+Click "Install to Workspace" at the top of the OAuth & Permissions page.
+Authorize. Copy the "Bot User OAuth Token" (starts with `xoxb-`).
+
+## 4. Add to .mcp.json
+
+```json
+{
+  "mcpServers": {
+    "slack": {
+      "command": "npx",
+      "args": ["-y", "@modelcontextprotocol/server-slack"],
+      "env": {
+        "SLACK_BOT_TOKEN": "xoxb-your-token-here",
+        "SLACK_TEAM_ID": "T0123456789"
+      }
+    }
+  }
+}
+```
+
+Find your Team ID in the Slack URL when logged into the web app:
+`https://app.slack.com/client/T0123456789/...`
+
+Store the token in an environment variable rather than hardcoding it.
+
+## 5. Test
+
+Start Claude Code in your project directory. Try:
+
+```
+Send a message to #general saying "Claude Code Slack integration is working"
+```
+
+Claude will use the `slack_post_message` tool from the MCP server.
+
+## Troubleshooting
+
+- "not_in_channel": Invite the bot to the channel first (`/invite @your-bot-name`)
+- Token not found: verify the env var is exported before launching Claude Code