feat(db): add database migrations

Generate initial migration file for all schema tables (users, decks,
cards, review_logs) using Drizzle Kit.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/pkgs/server/drizzle/0000_cynical_zeigeist.sql b/pkgs/server/drizzle/0000_cynical_zeigeist.sql
new file mode 100644
index 0000000..3034102
--- /dev/null
+++ b/pkgs/server/drizzle/0000_cynical_zeigeist.sql
@@ -0,0 +1,58 @@
+CREATE TABLE "cards" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"deck_id" uuid NOT NULL,
+	"front" text NOT NULL,
+	"back" text NOT NULL,
+	"state" smallint DEFAULT 0 NOT NULL,
+	"due" timestamp with time zone DEFAULT now() NOT NULL,
+	"stability" real DEFAULT 0 NOT NULL,
+	"difficulty" real DEFAULT 0 NOT NULL,
+	"elapsed_days" integer DEFAULT 0 NOT NULL,
+	"scheduled_days" integer DEFAULT 0 NOT NULL,
+	"reps" integer DEFAULT 0 NOT NULL,
+	"lapses" integer DEFAULT 0 NOT NULL,
+	"last_review" timestamp with time zone,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"deleted_at" timestamp with time zone,
+	"sync_version" integer DEFAULT 0 NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "decks" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"user_id" uuid NOT NULL,
+	"name" varchar(255) NOT NULL,
+	"description" text,
+	"new_cards_per_day" integer DEFAULT 20 NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"deleted_at" timestamp with time zone,
+	"sync_version" integer DEFAULT 0 NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "review_logs" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"card_id" uuid NOT NULL,
+	"user_id" uuid NOT NULL,
+	"rating" smallint NOT NULL,
+	"state" smallint NOT NULL,
+	"scheduled_days" integer NOT NULL,
+	"elapsed_days" integer NOT NULL,
+	"reviewed_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"duration_ms" integer,
+	"sync_version" integer DEFAULT 0 NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "users" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"username" varchar(255) NOT NULL,
+	"password_hash" varchar(255) NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "users_username_unique" UNIQUE("username")
+);
+--> statement-breakpoint
+ALTER TABLE "cards" ADD CONSTRAINT "cards_deck_id_decks_id_fk" FOREIGN KEY ("deck_id") REFERENCES "public"."decks"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "decks" ADD CONSTRAINT "decks_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "review_logs" ADD CONSTRAINT "review_logs_card_id_cards_id_fk" FOREIGN KEY ("card_id") REFERENCES "public"."cards"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "review_logs" ADD CONSTRAINT "review_logs_user_id_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."users"("id") ON DELETE no action ON UPDATE no action;
\ No newline at end of file