feat: finish the ai plugin (B18)

plugins/ai/migrations/mysql/0001_adopt_ai_tables.sql

@@ -0,0 +1,55 @@
+-- ai 0001: adopt_ai_tables
+-- Generated by termix-plugin migrations. Review before committing.
+-- Hand-edited: keeps the legacy foreign key from messages and proposals to
+-- their conversation, which the SDK cannot declare.
+
+CREATE TABLE IF NOT EXISTS `ai_providers` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `user_id` varchar(255) NOT NULL,
+  `provider_type` text NOT NULL,
+  `label` varchar(255) NOT NULL,
+  `base_url` text,
+  `api_key_prefix` text,
+  `default_model` text,
+  `enabled` boolean NOT NULL DEFAULT true,
+  `created_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  `updated_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `ai_providers` TO `p_ai_providers`;
+CREATE TABLE IF NOT EXISTS `ai_conversations` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `user_id` varchar(255) NOT NULL,
+  `title` text,
+  `provider_id` int,
+  `model` text,
+  `created_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  `updated_at` varchar(255) NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `ai_conversations` TO `p_ai_conversations`;
+CREATE TABLE IF NOT EXISTS `ai_messages` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `conversation_id` int NOT NULL,
+  `role` text NOT NULL,
+  `content` text NOT NULL DEFAULT (''),
+  `tool_calls` text,
+  `created_at` varchar(255) NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`conversation_id`) REFERENCES `p_ai_conversations` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `ai_messages` TO `p_ai_messages`;
+CREATE TABLE IF NOT EXISTS `ai_proposals` (
+  `id` int AUTO_INCREMENT PRIMARY KEY,
+  `conversation_id` int NOT NULL,
+  `user_id` varchar(255) NOT NULL,
+  `kind` varchar(255) NOT NULL,
+  `summary` text,
+  `payload` text NOT NULL DEFAULT ('{}'),
+  `status` varchar(32) NOT NULL DEFAULT 'pending',
+  `applied_at` text,
+  `result_summary` text,
+  `created_at` text NOT NULL DEFAULT (CURRENT_TIMESTAMP),
+  FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE,
+  FOREIGN KEY (`conversation_id`) REFERENCES `p_ai_conversations` (`id`) ON DELETE CASCADE
+);
+RENAME TABLE `ai_proposals` TO `p_ai_proposals`;