Add initial project structure with backend and frontend setup

- Created backend structure with Go, including main application logic and API endpoints.
- Added Docker support for both development and production environments.
- Introduced frontend using Nuxt 3 with Tailwind CSS for styling.
- Included configuration files for Docker and environment variables.
- Established basic documentation for contributing, development, and deployment processes.
- Set up .gitignore and .dockerignore files to manage ignored files in the repository.

frontend-nuxt/pages/admin/users/[username].vue

@@ -0,0 +1,123 @@
+<template>
+  <div class="container mx-auto p-4 max-w-lg">
+    <h1 class="text-2xl font-bold mb-6">{{ isNew ? 'New user' : `Edit ${username}` }}</h1>
+
+    <form @submit.prevent="submit" class="flex flex-col gap-4">
+      <div class="form-control">
+        <label class="label" for="user">Username</label>
+        <input
+          id="user"
+          v-model="form.user"
+          type="text"
+          class="input input-bordered"
+          required
+          :readonly="!isNew"
+        />
+      </div>
+      <PasswordInput
+        v-model="form.pass"
+        label="Password (leave blank to keep)"
+        autocomplete="new-password"
+      />
+      <div class="form-control">
+        <label class="label">Auths</label>
+        <div class="flex flex-wrap gap-2">
+          <label v-for="a of authOptions" :key="a" class="label cursor-pointer gap-2" :for="`auth-${a}`">
+            <input :id="`auth-${a}`" v-model="form.auths" type="checkbox" :value="a" class="checkbox checkbox-sm" />
+            <span class="label-text">{{ a }}</span>
+          </label>
+        </div>
+      </div>
+      <p v-if="error" class="text-error text-sm">{{ error }}</p>
+      <div class="flex gap-2">
+        <button type="submit" class="btn btn-primary" :disabled="loading">{{ loading ? '…' : 'Save' }}</button>
+        <NuxtLink to="/admin" class="btn btn-ghost">Back</NuxtLink>
+        <button
+          v-if="!isNew"
+          type="button"
+          class="btn btn-error btn-outline ml-auto"
+          :disabled="loading"
+          @click="confirmDelete"
+        >
+          Delete
+        </button>
+      </div>
+    </form>
+
+    <dialog ref="deleteModalRef" class="modal">
+      <div class="modal-box">
+        <p>Delete user {{ form.user }}?</p>
+        <div class="modal-action">
+          <form method="dialog">
+            <button class="btn">Cancel</button>
+          </form>
+          <button class="btn btn-error" :disabled="deleting" @click="doDelete">Delete</button>
+        </div>
+      </div>
+      <form method="dialog" class="modal-backdrop"><button aria-label="Close">Close</button></form>
+    </dialog>
+  </div>
+</template>
+
+<script setup lang="ts">
+definePageMeta({ middleware: 'admin' })
+
+const route = useRoute()
+const router = useRouter()
+const api = useMapApi()
+const username = computed(() => (route.params.username as string) ?? '')
+const isNew = computed(() => username.value === 'new')
+
+const form = ref({ user: '', pass: '', auths: [] as string[] })
+const authOptions = ['admin', 'map', 'markers', 'upload']
+const loading = ref(false)
+const deleting = ref(false)
+const error = ref('')
+const deleteModalRef = ref<HTMLDialogElement | null>(null)
+
+onMounted(async () => {
+  if (!isNew.value) {
+    form.value.user = username.value
+    try {
+      const u = await api.adminUserByName(username.value)
+      form.value.auths = u.auths ?? []
+    } catch {
+      error.value = 'Failed to load user'
+    }
+  }
+})
+
+async function submit() {
+  error.value = ''
+  loading.value = true
+  try {
+    await api.adminUserPost({
+      user: form.value.user,
+      pass: form.value.pass || undefined,
+      auths: form.value.auths,
+    })
+    await router.push('/admin')
+  } catch (e: unknown) {
+    error.value = e instanceof Error ? e.message : 'Failed'
+  } finally {
+    loading.value = false
+  }
+}
+
+function confirmDelete() {
+  deleteModalRef.value?.showModal()
+}
+
+async function doDelete() {
+  deleting.value = true
+  try {
+    await api.adminUserDelete(form.value.user)
+    deleteModalRef.value?.close()
+    await router.push('/admin')
+  } catch (e: unknown) {
+    error.value = e instanceof Error ? e.message : 'Delete failed'
+  } finally {
+    deleting.value = false
+  }
+}
+</script>