feat(113): fakturownia integration foundation

Phase 113 complete (v3.7 Invoices):
- DB: invoices, invoice_configs, invoice_number_counters, fakturownia_integration_settings + orders.invoice_requested
- FakturowniaIntegrationRepository (multi-account via integrations.type='fakturownia')
- FakturowniaApiClient (testConnection; createInvoice/downloadPdf STUBs)
- IntegrationsRepository::updateTestResult() (reusable test-result writer)
- /settings/integrations/fakturownia (list + edit + test + delete)
- Karta Fakturownia w hubie /settings/integrations

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

database/migrations/20260510_000104_create_invoices_tables.sql

@@ -0,0 +1,72 @@
+CREATE TABLE IF NOT EXISTS `invoice_configs` (
+  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `name` VARCHAR(128) NOT NULL,
+  `integration_id` INT UNSIGNED DEFAULT NULL,
+  `is_delegated` TINYINT(1) NOT NULL DEFAULT 0,
+  `is_active` TINYINT(1) NOT NULL DEFAULT 1,
+  `number_format` VARCHAR(64) NOT NULL DEFAULT 'FV/%N/%M/%Y',
+  `numbering_type` ENUM('monthly','yearly') NOT NULL DEFAULT 'monthly',
+  `sale_date_source` ENUM('order_date','payment_date','issue_date') NOT NULL DEFAULT 'issue_date',
+  `order_reference` ENUM('none','orderpro','integration') NOT NULL DEFAULT 'none',
+  `payment_to_days` TINYINT UNSIGNED NOT NULL DEFAULT 7,
+  `default_kind` VARCHAR(32) NOT NULL DEFAULT 'vat',
+  `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  KEY `invoice_configs_integration_idx` (`integration_id`),
+  CONSTRAINT `invoice_configs_integration_fk` FOREIGN KEY (`integration_id`) REFERENCES `integrations` (`id`) ON DELETE SET NULL ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `invoices` (
+  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `order_id` BIGINT UNSIGNED NOT NULL,
+  `config_id` INT UNSIGNED NOT NULL,
+  `invoice_number` VARCHAR(64) NOT NULL,
+  `issue_date` DATETIME NOT NULL,
+  `sale_date` DATETIME NOT NULL,
+  `payment_due_date` DATETIME DEFAULT NULL,
+  `seller_data_json` JSON NOT NULL,
+  `buyer_data_json` JSON DEFAULT NULL,
+  `items_json` JSON NOT NULL,
+  `total_net` DECIMAL(12,2) NOT NULL DEFAULT 0.00,
+  `total_gross` DECIMAL(12,2) NOT NULL DEFAULT 0.00,
+  `order_reference_value` VARCHAR(128) DEFAULT NULL,
+  `external_invoice_id` VARCHAR(128) DEFAULT NULL,
+  `external_pdf_url` VARCHAR(500) DEFAULT NULL,
+  `kind` VARCHAR(32) NOT NULL DEFAULT 'vat',
+  `created_by` INT UNSIGNED DEFAULT NULL,
+  `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `invoices_number_unique` (`invoice_number`),
+  KEY `invoices_order_idx` (`order_id`),
+  KEY `invoices_config_date_idx` (`config_id`, `issue_date`),
+  KEY `invoices_external_idx` (`external_invoice_id`),
+  CONSTRAINT `invoices_order_fk` FOREIGN KEY (`order_id`) REFERENCES `orders` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT `invoices_config_fk` FOREIGN KEY (`config_id`) REFERENCES `invoice_configs` (`id`) ON DELETE RESTRICT ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `invoice_number_counters` (
+  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `config_id` INT UNSIGNED NOT NULL,
+  `year` SMALLINT UNSIGNED NOT NULL,
+  `month` TINYINT UNSIGNED DEFAULT NULL,
+  `last_number` INT UNSIGNED NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `invoice_counters_config_period_unique` (`config_id`, `year`, `month`),
+  CONSTRAINT `invoice_counters_config_fk` FOREIGN KEY (`config_id`) REFERENCES `invoice_configs` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `fakturownia_integration_settings` (
+  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `integration_id` INT UNSIGNED NOT NULL,
+  `account_prefix` VARCHAR(64) NOT NULL,
+  `api_token_encrypted` TEXT DEFAULT NULL,
+  `department_id` VARCHAR(64) DEFAULT NULL,
+  `default_kind` VARCHAR(32) NOT NULL DEFAULT 'vat',
+  `default_payment_to_days` TINYINT UNSIGNED NOT NULL DEFAULT 7,
+  `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `fakturownia_integration_id_unique` (`integration_id`),
+  CONSTRAINT `fakturownia_integration_fk` FOREIGN KEY (`integration_id`) REFERENCES `integrations` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

database/migrations/20260510_000105_add_invoice_requested_to_orders.sql

@@ -0,0 +1,3 @@
+ALTER TABLE `orders`
+  ADD COLUMN `invoice_requested` TINYINT(1) NOT NULL DEFAULT 0,
+  ADD INDEX `idx_orders_invoice_requested` (`invoice_requested`);

database/migrations/20260510_000106_seed_fakturownia_integration_type.sql

@@ -0,0 +1,6 @@
+-- Phase 113-01: Fakturownia Integration Type marker.
+-- `integrations.type` is VARCHAR(32) - no schema change required for new type 'fakturownia'.
+-- Rows for type='fakturownia' are inserted on-demand by FakturowniaIntegrationRepository
+-- via IntegrationsRepository::ensureIntegration(). This migration just stamps the table
+-- comment so we have an auditable record of when the type became officially supported.
+ALTER TABLE `integrations` COMMENT = 'Integration accounts; supported types: allegro, apaczka, inpost, shoppro, fakturownia (Phase 113-01)';