feat(admin-web): add Vue 3 admin console and deployment configs

- Add admin-web/ with Vite + Vue 3 + Element Plus + Vue Router
- Add 8 management pages: dashboard, channel subject/account, conversation,
  person, tag, send record (with test send), inbound flow
- Add API client modules for account/channel/crm/send/flow
- Add Dockerfile and nginx config for admin-web
- Add Dockerfile for mci-server
- Add docker-compose.app.yml for one-command app deployment
- Add K8s deployment manifests for backend/admin-web/channel-service
- Update scripts/local-up.sh with shared network and --with-apps option

backend/mci-server/Dockerfile

@@ -0,0 +1,19 @@
+FROM maven:3.9-eclipse-temurin-21-alpine AS builder
+
+WORKDIR /app
+COPY mci-shared ./mci-shared
+COPY mci-channel-common ./mci-channel-common
+COPY mci-server/pom.xml ./mci-server/pom.xml
+COPY mci-server/src ./mci-server/src
+
+RUN mvn -f mci-shared/pom.xml install -DskipTests && \
+    mvn -f mci-channel-common/pom.xml install -DskipTests && \
+    mvn -f mci-server/pom.xml package -DskipTests
+
+FROM eclipse-temurin:21-jre-alpine
+
+WORKDIR /app
+COPY --from=builder /app/mci-server/target/*.jar app.jar
+
+EXPOSE 8080
+ENTRYPOINT ["java", "-jar", "app.jar"]