Initial scaffold: full-stack RackMapper application

Complete project scaffold with working auth, REST API, Prisma/SQLite
schema, Docker config, and React frontend for both Rack Planner and
Service Mapper modules. Both server and client pass TypeScript strict
mode with zero errors. Initial migration applied.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/src/store/useMapStore.ts

@@ -0,0 +1,58 @@
+import { create } from 'zustand';
+import type { ServiceMap, ServiceMapSummary } from '../types';
+import { apiClient } from '../api/client';
+
+interface MapState {
+  maps: ServiceMapSummary[];
+  activeMap: ServiceMap | null;
+  loading: boolean;
+  fetchMaps: () => Promise<void>;
+  loadMap: (id: string) => Promise<void>;
+  createMap: (name: string, description?: string) => Promise<ServiceMap>;
+  deleteMap: (id: string) => Promise<void>;
+  setActiveMap: (map: ServiceMap | null) => void;
+}
+
+export const useMapStore = create<MapState>((set) => ({
+  maps: [],
+  activeMap: null,
+  loading: false,
+
+  fetchMaps: async () => {
+    set({ loading: true });
+    try {
+      const maps = await apiClient.maps.list();
+      set({ maps, loading: false });
+    } catch {
+      set({ loading: false });
+      throw new Error('Failed to load maps');
+    }
+  },
+
+  loadMap: async (id) => {
+    set({ loading: true });
+    try {
+      const map = await apiClient.maps.get(id);
+      set({ activeMap: map, loading: false });
+    } catch {
+      set({ loading: false });
+      throw new Error('Failed to load map');
+    }
+  },
+
+  createMap: async (name, description) => {
+    const map = await apiClient.maps.create({ name, description });
+    set((s) => ({ maps: [{ id: map.id, name: map.name, description: map.description, createdAt: map.createdAt, updatedAt: map.updatedAt }, ...s.maps] }));
+    return map;
+  },
+
+  deleteMap: async (id) => {
+    await apiClient.maps.delete(id);
+    set((s) => ({
+      maps: s.maps.filter((m) => m.id !== id),
+      activeMap: s.activeMap?.id === id ? null : s.activeMap,
+    }));
+  },
+
+  setActiveMap: (map) => set({ activeMap: map }),
+}));