feat(modules): company-context module surfaces and schema-driven settings

Adds the read-only company "Active Modules" index page (lists every
instance-activated module with a Settings shortcut) and the schema-driven
settings framework (generic BaseSchemaForm.vue renderer + per-company
persistence in CompanySetting). Bundled because they share the same
routes/api.php edit and the index page's Settings button targets the
settings page.

Backend:

- CompanyModulesController::index() returns every Module::enabled = true row
  with a kebab-case slug (via Str::kebab()) and a has_settings flag computed
  from \InvoiceShelf\Modules\Registry::settingsFor(). nwidart stores module
  names in PascalCase ("HelloWorld") but URLs and registry keys use kebab
  ("hello-world") — the controller normalizes so module authors can call
  Registry::registerSettings('hello-world') naturally without thinking
  about the storage format.

- ModuleSettingsController::show(\$slug) returns the registered Schema +
  per-company values from CompanySetting (defaults flow through when nothing
  has been saved yet). update(\$slug) builds Laravel validator rules from
  the Schema's per-field rules arrays — with type-rule fallbacks for
  switch -> boolean, number -> numeric, multiselect -> array — silently
  drops unknown keys, and persists via CompanySetting::setSettings() under
  the module.{slug}.{key} prefix. Activation is instance-global, but
  settings are per-company: two companies on the same instance can
  configure the same activated module differently.

- routes/api.php mounts GET /api/v1/company-modules at the root of the
  company API group and GET/PUT /api/v1/modules/{slug}/settings inside the
  existing modules prefix.

Frontend:

- BaseSchemaForm.vue is the central new component — a generic schema-driven
  form renderer that maps schema fields to BaseInput / BaseTextarea /
  BaseSwitch / BaseMultiselect by type, and builds Vuelidate rules
  dynamically from each field's rules array (supports required, email, url,
  numeric, min:N, max:N). New fields are added by extending the type ->
  component map.

- CompanyModulesIndexView.vue fetches /company-modules and renders a card
  grid (with empty/loading states); CompanyModuleCard.vue is the per-row
  component with the Settings button. ModuleSettingsView.vue fetches
  /modules/{slug}/settings, hands {schema, values} to BaseSchemaForm, and
  posts back on submit.

- Company-context routes.ts is rebuilt after the previous commit relocated
  the marketplace browser away. It now declares modules.index +
  modules.settings, both gated by manage-module ability.

- New api/services/{companyModules,moduleSettings}.service.ts thin clients.

- lang/en.json adds modules.index.{description,empty_title,empty_description},
  modules.settings.{title,open,saved,not_found,none}, and
  modules.sidebar.section_title. The sidebar key is added here even though
  the dynamic sidebar rendering lands in the next commit — keeping all i18n
  additions in one file edit avoids hunk-splitting lang/en.json.

resources/scripts/features/company/modules/components/CompanyModuleCard.vue

@@ -0,0 +1,61 @@
+<template>
+  <div
+    class="
+      flex flex-col p-6 rounded-lg border border-line-default bg-surface-secondary
+      shadow-sm hover:shadow-md transition-shadow
+    "
+  >
+    <div class="flex items-start justify-between gap-3">
+      <div class="flex items-center gap-3">
+        <div class="
+          shrink-0 h-10 w-10 rounded-lg bg-primary-50 text-primary-600
+          flex items-center justify-center
+        ">
+          <BaseIcon :name="iconName" class="h-5 w-5" />
+        </div>
+        <div>
+          <h3 class="text-base font-semibold text-heading">{{ data.name }}</h3>
+          <p class="text-xs text-muted">{{ $t('modules.version') }} {{ data.version }}</p>
+        </div>
+      </div>
+    </div>
+
+    <div class="mt-6 flex items-center justify-end">
+      <BaseButton
+        v-if="data.has_settings"
+        size="sm"
+        variant="primary-outline"
+        @click="goToSettings"
+      >
+        <template #left="slotProps">
+          <BaseIcon name="CogIcon" :class="slotProps.class" />
+        </template>
+        {{ $t('modules.settings.open') }}
+      </BaseButton>
+      <span v-else class="text-xs text-subtle italic">
+        {{ $t('modules.settings.none') }}
+      </span>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import { useRouter } from 'vue-router'
+import type { CompanyModuleSummary } from '../store'
+
+interface Props {
+  data: CompanyModuleSummary
+}
+
+const props = defineProps<Props>()
+const router = useRouter()
+
+const iconName = computed<string>(() => {
+  return props.data.menu?.icon ?? 'PuzzlePieceIcon'
+})
+
+function goToSettings(): void {
+  router.push({ name: 'modules.settings', params: { slug: props.data.slug } })
+}
+</script>