core: make account login upgrades safe while adding multi-account workspace auth (#15487)

Co-authored-by: Kit Langton <kit.langton@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/opencode/migration/20260228203230_blue_harpoon/migration.sql

@@ -0,0 +1,17 @@
+CREATE TABLE `account` (
+	`id` text PRIMARY KEY,
+	`email` text NOT NULL,
+	`url` text NOT NULL,
+	`access_token` text NOT NULL,
+	`refresh_token` text NOT NULL,
+	`token_expiry` integer,
+	`selected_org_id` text,
+	`time_created` integer NOT NULL,
+	`time_updated` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `account_state` (
+	`id` integer PRIMARY KEY NOT NULL,
+	`active_account_id` text,
+	FOREIGN KEY (`active_account_id`) REFERENCES `account`(`id`) ON UPDATE no action ON DELETE set null
+);

packages/opencode/migration/20260309230000_move_org_to_state/migration.sql

@@ -0,0 +1,3 @@
+ALTER TABLE `account_state` ADD `active_org_id` text;--> statement-breakpoint
+UPDATE `account_state` SET `active_org_id` = (SELECT `selected_org_id` FROM `account` WHERE `account`.`id` = `account_state`.`active_account_id`);--> statement-breakpoint
+ALTER TABLE `account` DROP COLUMN `selected_org_id`;