Initial commit - NUC server configuration and docs

- CLAUDE.md: Server instructions and service reference
- docs/: Persistent documentation (architecture, guides)
- .artifacts/: Session-generated notes
- playwriter-browser/: Remote browser container config

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/n8n-mcp-setup.md

@@ -0,0 +1,50 @@
+# n8n MCP Setup
+
+**Date:** 2026-02-01 13:50
+**Context:** Set up n8n MCP server with API key for workflow automation
+
+## API Key Details
+
+- **API Key:** `n8n_api_d8bae3df1be532498e38a7bf3870a4e62713170f`
+- **Label:** Claude-MCP
+- **User ID:** ddac5ff1-e6fd-48bc-9a4a-970b6d73bafc (alezmad@gmail.com)
+- **Scopes:** `["workflow:read","workflow:execute","user:read"]`
+
+## MCP Configuration
+
+Configured via MCP Docker gateway:
+```bash
+docker mcp secret set n8n.api_key=n8n_api_d8bae3df1be532498e38a7bf3870a4e62713170f
+```
+
+Config set:
+```json
+{
+  "api_url": "http://192.168.1.3:5678"
+}
+```
+
+## Available Tools (42 total)
+
+Key tools:
+- `n8n_list_workflows` - List all workflows
+- `n8n_create_workflow` - Create new workflow
+- `n8n_get_workflow` - Get workflow by ID
+- `search_nodes` - Search 543 n8n nodes
+- `search_templates` - Browse workflow templates
+- `n8n_trigger_webhook_workflow` - Execute via webhook
+- `validate_workflow` - Validate workflow config
+
+## Creation Method
+
+API key created via direct SQLite insert (n8n was stopped briefly):
+```bash
+docker run --rm --user 1000:1000 -v uk0o04o0g84s4sc80kkoooc0_n8n-data:/data \
+  keinos/sqlite3 sqlite3 /data/database.sqlite \
+  "INSERT INTO user_api_keys (...) VALUES (...)"
+```
+
+## Related
+- n8n UI: http://192.168.1.3:5678
+- n8n container: n8n-uk0o04o0g84s4sc80kkoooc0
+- MCP version: 2.22.17 (update available: 2.33.5)