project-diagramming-archify: add publish-maps.sh — rsync docs/ to maps site behind Caddy on .35

- publish-maps.sh: incremental/atomic rsync of <project>/docs to maps.lab.audasmedia.com.au/<project>/docs (excludes visual-check sidecars)
- SKILL.md: document publish step after deliver + site URL
- maps.lab.audasmedia.com.au served by Caddy on .35 (file_server browse, no auth)

skills/project-diagramming-archify/SKILL.md

@@ -47,6 +47,21 @@ Commands (from the vendored skill's fast authoring path):
 
 Create `<project>/docs/` (+ `docs/archify/`) if missing. Never write artifacts outside the project directory.
 
+## Publish to the central maps site (optional but recommended)
+
+After a successful `deliver`, offer to **publish** the project's `docs/` to the LAN maps site:
+
+```bash
+~/.agents/skills/project-diagramming-archify/publish-maps.sh [<project-dir>]
+```
+
+- Uploads `docs/` to Caddy on `.35` → **`https://maps.lab.audasmedia.com.au/<project>/docs/`** (site index at `https://maps.lab.audasmedia.com.au/` — Caddy `file_server browse`, no auth, read-only static hosting).
+- **Incremental + atomic** (rsync -az): only changed blocks transfer; no half-written files on failure.
+- Excludes `*.visual-check.*` sidecars automatically (keeps the browse index clean).
+- Works from any machine with ssh key access to `.35` (all three pi machines have it).
+- `publish-maps.sh --list` shows what's already published.
+- Wait for `visual-check` to pass first; `publish-maps.sh` does NOT re-run it.
+
 ## Authoring rules (subset of the vendored skill — read SKILL.md for full invariants)
 
 - Omit `meta.visual_preset`, `meta.subtitle`, `meta.legend`, `meta.engineering_profile` by default.