feat(stack): add Tatlock UI home lab dashboard

Add Flutter-based dashboard to replace Organizr:
- Port 8092, stateless static web app via nginx
- Resource limits (128M/32M), wget-based healthcheck
- Documented in CONTAINERS.md with full service profile

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

stacks/tatlock-ui.yml

@@ -0,0 +1,44 @@
+version: '3.8'
+
+# Tatlock UI - Home Lab Dashboard (Flutter Web)
+# Port: 8092 (HTTP)
+# GPU: No
+# External: home.schweitz.net (future, replacing Organizr)
+# Storage: None (stateless static web app)
+#
+# Container image built from: git.schweitz.internal/jpmschweitzer/tatlock-ui
+# See CONTAINERS.md for port allocation reference
+
+services:
+  tatlock-ui:
+    image: git.schweitz.internal/jpmschweitzer/tatlock-ui:latest
+    container_name: tatlock-ui
+    restart: unless-stopped
+    ports:
+      - "8092:80"
+    networks:
+      - docker-dataplane
+    labels:
+      - "com.centurylinklabs.watchtower.enable=true"
+    healthcheck:
+      test: ["CMD-SHELL", "wget -q --spider http://localhost:80/ || exit 1"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+    deploy:
+      resources:
+        limits:
+          memory: 128M
+        reservations:
+          memory: 32M
+
+networks:
+  docker-dataplane:
+    external: true
+    name: docker-dataplane
+
+# Access:
+# - Internal: http://tower-of-joy:8092
+# - Mesh VPN: http://10.99.0.1:8092
+# - Future: https://home.schweitz.net (after NPM switch from Organizr)