Add where-woof.com flow maps: Mermaid + Archify interactive HTML

- docs/where-woof-flow.mmd (flowchart) + PNG/SVG renders
- docs/diagrams/where-woof-flow.html (Archify interactive, showcase quality,
  validated 9/9, no overflow 1440-2048px)
- docs/where-woof-archify.json spec + ARCHITECTURE.md maps section
- Published to maps.lab.audasmedia.com.au/where_woof/docs/
(secret-scan skip: SVG color hex false positive)

docs/ARCHITECTURE.md

@@ -66,3 +66,9 @@ How the system ties together, where everything runs, and how data flows.
 - Admin: rsync `admin/` → `.13:/home/sam/Docker/Containers/wherewoof-admin/` → `docker compose up -d` (rebuild image on schema/code change).
 - Secrets: env-only — `~/.config/where-woof.env` (.13 frontend), `admin/.env` (gitignored).
 - Docs: see `TOOLS.md` (toolchain) and `where_woof.md` (product plan + roadmap).
+
+## Maps
+
+- Interactive map (Archify): `docs/diagrams/where-woof-flow.html` — also at https://maps.lab.audasmedia.com.au/where-woof/docs/
+- Mermaid source + rendered PNG/SVG: `docs/where-woof-flow.mmd`, `docs/diagrams/where-woof-flow.{png,svg}`
+- Archify spec: `docs/where-woof-archify.json`