chore(roo): document git-based wiki workflow in rules, skill, and README

- mcp-builder rules: add wiki/ to structure diagram, add Wiki Update
  Workflow section (MANDATORY), update After Building a Server checklist
- gitea-push skill: add wiki deploy as a valid use case
- README.md: add wiki section with deploy_wiki.sh pointer, add
  mcp-image-gen to MCP servers table

.roo/rules-mcp-builder/00-mcp-builder-behavior.md

@@ -20,6 +20,28 @@ Patrick is in MCP Builder mindset. He is building or extending MCP servers in th
       README.md
   java/                     ← Java projects (not MCP servers)
   plans/                    ← architecture plans
+  docs/
+    wiki/
+      pages/                ← wiki source (tracked in pi_mcps)
+        Home.md, _Sidebar.md, ...
+      deploy_wiki.sh        ← copies pages → wiki/ → git push
+  wiki/                     ← gitignored: persistent clone of pi_mcps.wiki.git
+```
+
+## Wiki Update Workflow (MANDATORY after adding/changing a server)
+
+Wiki source lives in `docs/wiki/pages/*.md` — real Markdown files, tracked in the main repo.
+
+```bash
+# 1. Edit the relevant page(s) in docs/wiki/pages/
+# 2. Deploy to Gitea wiki:
+./docs/wiki/deploy_wiki.sh "docs: describe your change"
+```
+
+First-time setup (wiki/ clone, done once):
+```bash
+TOKEN=8bf0c734ebda3e61d9c9068489ce58a2bf8d33db
+git clone http://pplate:${TOKEN}@192.168.188.119:30008/pplate/pi_mcps.wiki.git wiki/
 ```
 
 ## FastMCP Pattern (non-negotiable)
@@ -81,5 +103,6 @@ test = ["pytest", "pytest-mock", "pytest-cov"]
 1. **Store Fact:** `memory_store_fact("codebase", "mcp/{name} has N tools: [list]. Stack: X. Env vars: Y.")`
 2. **Wire into .roo/mcp.json:** Add the server entry with correct uv path
 3. **Update root README.md:** Add to MCPs table
-4. **Push to Gitea:** Conventional commit: `feat(mcp-{name}): add initial server with N tools`
-5. **Resolve Hypothesis:** Was the tool count and auth pattern as predicted?
+4. **Update wiki:** Create or update `docs/wiki/pages/{server-name}.md` + update `MCP-Servers-Overview.md`, then run `./docs/wiki/deploy_wiki.sh`
+5. **Push to Gitea:** Conventional commit: `feat(mcp-{name}): add initial server with N tools`
+6. **Resolve Hypothesis:** Was the tool count and auth pattern as predicted?