Add write_readme, Caddy, and start prompt to wolf/homeassistant/js99er/minecraft

- wolf.sh: add Authelia SSO check, configure_caddy_for_service, write_readme,
  and prompt to start Wolf (it had none of these)
- homeassistant.sh: add write_readme with access URL and manage commands
- js99er.sh: add write_readme with access URL and manage commands
- minecraft.sh: add write_readme with manage and backup commands

Completes the service audit — all 49 services now have full interactive setup,
standalone bootstrap, and self-documenting README in the deploy directory.

https://claude.ai/code/session_014CCYqVwW6d6f5dw1qRokYt

services/js99er.sh

@@ -442,7 +442,24 @@ COMPOSE
         fi
     fi
 
-    # ── 7. Access summary ────────────────────────────────────────────────────
+    write_readme "$JS99ER_DIR" << MD
+# js99er — TI-99/4A Emulator
+
+Browser-based TI-99/4A emulator. No built-in auth — protect with Authelia if exposing externally.
+
+## Access
+- URL: http://localhost:${JS99ER_PORT}
+- Online (no install): https://js99er.net
+
+## Manage
+\`\`\`bash
+cd $JS99ER_DIR
+docker compose up -d --build               # start (or rebuild)
+docker compose down                        # stop
+docker compose logs -f                     # logs
+\`\`\`
+MD
+
     echo ""
     echo "  Access at:  http://localhost:${JS99ER_PORT}"
     echo "  If you set a domain above, it is also reachable via that domain (HTTPS)."