feat(ai): Phase 1 — provider configuration, installer step, admin + company settings

Foundation for the AI chatbot + text generation feature. Phase 1 is infrastructure only: driver plumbing, configuration storage with encrypted API keys, global vs per-company resolution, admin + company UI pages, and an optional installer wizard step. The chat assistant and text-generation WYSIWYG integration come in later phases.

**Driver plumbing (app/Support/Ai/)** — AiDriver abstract, AiDriverFactory, AiException, AiChatResponse DTO, OpenRouterDriver concrete implementation. OpenRouter is the OpenAI-compatible aggregator that unlocks hundreds of models behind one API key and one request shape — ideal as the default v1 driver. Drivers are extensible the same way exchange rate drivers are: the module Registry's generic registerDriver('ai', ...) machinery plus a typed Registry::registerAiDriver() convenience wrapper (shipped in the upstream invoiceshelf/modules package in a paired commit).

**AiConfigurationService** — mirrors MailConfigurationService shape but with one deliberate deviation: API keys are encrypted at the service layer via Crypt::encryptString before persistence. OpenRouter bearer tokens have much bigger blast radius than SMTP passwords. Same settings / company_settings tables, same global-vs-per-company pattern, same use_custom_ai_config override toggle. Resolution order: global ai_enabled must be YES, then the company either overrides via use_custom_ai_config=YES (and can opt out with ai_enabled=NO inside the override) or inherits the global config.

**Controllers** — Admin/Settings/AiConfigurationController (global CRUD + driver list + test connection), Company/Settings/CompanyAiConfigurationController (per-company override + test), Setup/AiConfigurationController (installer wizard step, skippable with explicit ai_enabled=NO). API key is always masked as '********' in GET responses — the frontend submits the placeholder back on save and the backend preserves the stored value.

**Installer wizard** — new optional step 7 'AI' between Mail and Account. Default OFF with a Skip button. MailView.vue now routes to installation.ai instead of installation.account; installation.ai then routes to installation.account. Step order comment updated in routes.ts.

**Admin + Company settings pages** — AdminAiConfigView (no toggle, always global) and AiConfigView (with use_custom_ai_config BaseSwitchSection that auto-saves OFF). Both share AiConfigurationForm which renders the driver selector, API key input with show/hide, driver-specific config_fields (base_url for OpenRouter), and per-role enable toggles with free-text model inputs backed by a datalist of suggested models from driver metadata.

**Bootstrap endpoint** — adds an ai block to the response: { enabled, chat_enabled, text_generation_enabled }. All three are booleans resolved through AiConfigurationService::resolveForCompany(). Never leaks the API key. Frontend feature flags read from bootstrapData.ai to decide whether to show Phase 2/3 UI.

**Bouncer ability** 'manage ai config' added to SettingsPolicy, gated on isSuperAdmin() (same pattern as manage email config, manage pdf config).

**Tests** (22 new) — Unit: AiDriverFactory resolves built-in + Registry-contributed drivers, rejects unknown, merges availableDrivers. AiConfigurationService: encryption round-trip, resolution order (3 cases: global off, inherit global, override with company key, override with opt-out), makeDriver null/instance cases, listDrivers metadata. Feature: admin save + read with api key masking, preserve-on-placeholder behavior, company toggle ON/OFF semantics, bootstrap ai flags reflect resolution, company opt-out path.

372 tests pass (was 350, +22). Pint clean. npm run build clean. Phase 2 (chat assistant + tool calling) and Phase 3 (WYSIWYG text generation popup) are separate follow-up commits — this one is the foundation only.

resources/scripts/features/installation/views/AiView.vue

@@ -0,0 +1,100 @@
+<script setup lang="ts">
+import { onMounted, ref } from 'vue'
+import { useRouter } from 'vue-router'
+import { installClient } from '@/scripts/api/install-client'
+import type {
+  AiConfig,
+  AiDriverOption,
+  AiDriversResponse,
+} from '@/scripts/types/ai-config'
+import AiConfigurationForm from '@/scripts/features/company/settings/components/AiConfigurationForm.vue'
+import { useInstallationFeedback } from '../use-installation-feedback'
+
+const router = useRouter()
+const { isSuccessfulResponse, showRequestError, showResponseError } = useInstallationFeedback()
+
+const isSaving = ref(false)
+const isFetchingInitialData = ref(false)
+const configData = ref<AiConfig | null>(null)
+const drivers = ref<AiDriverOption[]>([])
+
+onMounted(loadData)
+
+async function loadData(): Promise<void> {
+  isFetchingInitialData.value = true
+  try {
+    const { data } = await installClient.get<{
+      config: AiConfig
+      drivers: AiDriversResponse['ai_drivers']
+    }>('/api/v1/installation/ai/config')
+    configData.value = data.config
+    drivers.value = data.drivers
+  } catch (error: unknown) {
+    showRequestError(error)
+  } finally {
+    isFetchingInitialData.value = false
+  }
+}
+
+async function saveAi(value: AiConfig): Promise<void> {
+  isSaving.value = true
+  try {
+    const { data } = await installClient.post('/api/v1/installation/ai/config', value)
+
+    if (!isSuccessfulResponse(data)) {
+      showResponseError(data)
+      return
+    }
+
+    await router.push({ name: 'installation.account' })
+  } catch (error: unknown) {
+    showRequestError(error)
+  } finally {
+    isSaving.value = false
+  }
+}
+
+async function skipStep(): Promise<void> {
+  // Persist the disabled default so bootstrap sees an explicit ai_enabled=NO
+  // (rather than a missing key that defaults to NO anyway — we want the value
+  // in storage so tests / repeated installer runs behave predictably).
+  await saveAi({
+    ai_enabled: 'NO',
+    ai_driver: 'openrouter',
+    ai_api_key: '',
+    ai_base_url: '',
+    ai_chat_enabled: 'NO',
+    ai_chat_model: '',
+    ai_text_generation_enabled: 'NO',
+    ai_text_generation_model: '',
+  })
+}
+</script>
+
+<template>
+  <BaseWizardStep
+    :title="$t('settings.ai.installer_title')"
+    :description="$t('settings.ai.installer_description')"
+  >
+    <div v-if="configData">
+      <AiConfigurationForm
+        :config-data="configData"
+        :drivers="drivers"
+        :is-saving="isSaving"
+        :is-fetching-initial-data="isFetchingInitialData"
+        @submit-data="saveAi"
+      />
+
+      <div class="mt-6">
+        <BaseButton
+          variant="primary-outline"
+          type="button"
+          :disabled="isSaving"
+          @click="skipStep"
+        >
+          {{ $t('general.skip') }}
+        </BaseButton>
+      </div>
+    </div>
+  </BaseWizardStep>
+</template>

resources/scripts/features/installation/views/MailView.vue

@@ -51,7 +51,7 @@ async function saveMailConfig(value: MailConfig): Promise<void> {
       ...value,
     }
 
-    await router.push({ name: 'installation.account' })
+    await router.push({ name: 'installation.ai' })
   } catch (error: unknown) {
     showRequestError(error)
   } finally {