feat: implement secure multi-tenancy, RBAC, and premium dark mode

- Enforced tenant isolation and Role-Based Access Control across all API routes

- Implemented secure profile avatar upload using multer and UUIDs

- Redesigned UI with a premium "Onyx & Gold" Charcoal dark mode

- Added Funnel Stage and Origin filters to Dashboard and User Detail pages

- Replaced "Referral" with "Indicação" across the platform and database

- Optimized Dockerfile and local environment setup for reliable deployments

- Fixed frontend syntax errors and improved KPI/Chart visualizations

agenciac_comia.sql

@@ -36,7 +36,7 @@ CREATE TABLE `attendances` (
   `first_response_time_min` int DEFAULT '0',
   `handling_time_min` int DEFAULT '0',
   `funnel_stage` enum('Sem atendimento','Identificação','Negociação','Ganhos','Perdidos') NOT NULL,
-  `origin` enum('WhatsApp','Instagram','Website','LinkedIn','Referral') NOT NULL,
+  `origin` enum('WhatsApp','Instagram','Website','LinkedIn','Indicação') NOT NULL,
   `product_requested` varchar(255) DEFAULT NULL,
   `product_sold` varchar(255) DEFAULT NULL,
   `converted` tinyint(1) DEFAULT '0',
@@ -104,6 +104,38 @@ INSERT INTO `tenants` (`id`, `name`, `slug`, `admin_email`, `logo_url`, `status`
 
 -- --------------------------------------------------------
 
+--
+-- Estrutura da tabela `pending_registrations`
+--
+
+CREATE TABLE `pending_registrations` (
+  `email` varchar(255) NOT NULL,
+  `password_hash` varchar(255) NOT NULL,
+  `full_name` varchar(255) NOT NULL,
+  `organization_name` varchar(255) NOT NULL,
+  `verification_code` varchar(10) NOT NULL,
+  `expires_at` timestamp NOT NULL,
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`email`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- --------------------------------------------------------
+
+--
+-- Estrutura da tabela `password_resets`
+--
+
+CREATE TABLE `password_resets` (
+  `email` varchar(255) NOT NULL,
+  `token` varchar(255) NOT NULL,
+  `expires_at` timestamp NOT NULL,
+  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`token`),
+  KEY `email` (`email`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- --------------------------------------------------------
+
 --
 -- Estrutura da tabela `users`
 --