docs(wiki): migrate to git-based workflow with persistent wiki/ clone

- Extract all wiki content from create_wiki_pages.py into docs/wiki/pages/*.md
- Add docs/wiki/deploy_wiki.sh: copies pages to wiki/ repo, commits, pushes
- Add /wiki/ to .gitignore (anchored — does not affect docs/wiki/)
- 12 pages: Home, MCP-Servers-Overview, mcp-image-gen, ComfyUI-Setup,
  mcp-webscraper (8 tools incl. search_hint), BigMind (schema v8),
  Development-Conventions, Java-Projects, Java-wellmann-shop,
  Java-mss-failsafe, Java-Architecture, _Sidebar
- Workflow: edit docs/wiki/pages/*.md → ./docs/wiki/deploy_wiki.sh

docs/wiki/pages/MCP-Servers-Overview.md

@@ -0,0 +1,42 @@
+# 🔌 MCP Servers Overview
+
+![MCP Overview Banner](http://192.168.188.119:30008/pplate/pi_mcps/raw/branch/main/docs/wiki/images/mcp-overview-banner.png)
+
+This repo contains three production-grade MCP (Model Context Protocol) servers, each specialized for a different capability domain. Together they give Roo Code / Claude Desktop a complete set of superpowers.
+
+## The Three Pillars
+
+```
+Roo Code / Claude Desktop
+       │
+       ├── bigmind ──────────► ~/.mcp/bigmind/memory.db  (persistent memory)
+       ├── mcp-image-gen ────► ComfyUI @ localhost:8188   (image generation)
+       └── webscraper ───────► Internet / Intranet         (web scraping + search)
+```
+
+## Comparison Table
+
+| Feature | mcp-image-gen | webscraper | bigmind |
+|---|---|---|---|
+| **Purpose** | Generate images from text | Scrape & parse web, search | Persistent AI memory |
+| **Tools** | 4 | 8 | 20+ |
+| **Backend** | ComfyUI / FLUX.1-schnell | httpx + BeautifulSoup4 + Brave | SQLite + FTS5 |
+| **GPU required** | ✅ AMD RX 7900 XTX | ❌ | ❌ |
+| **Tests** | 19/19 ✅ | 23/23 ✅ | 297/297 ✅ |
+| **Schema version** | n/a | n/a | v8 |
+
+## Quick Links
+
+- 🎨 [mcp-image-gen](mcp-image-gen) — Image generation docs
+- 🕸️ [mcp-webscraper](mcp-webscraper) — Web scraping docs
+- 🧠 [BigMind](BigMind) — Memory system docs
+- 🛠️ [Development Conventions](Development-Conventions) — How all servers are built
+
+## Adding a New Server
+
+All servers follow the [FastMCP convention](Development-Conventions). Use the `new-mcp-server` Roo skill to scaffold:
+
+```bash
+# In Roo Code MCP Builder mode, load skill:
+# skill: new-mcp-server
+```