feat(18-01): add globalItems, itemGlobalLinks tables and user profile/setup visibility columns

- Add globalItems table with brand, model, category, weightGrams, priceCents, imageUrl, description
- Add itemGlobalLinks junction table linking user items to global items (unique per item)
- Add displayName, avatarUrl, bio nullable columns to users table
- Add isPublic boolean column to setups table (default false)
- Import boolean from drizzle-orm/pg-core
- Generate migration 0001_tough_boomerang.sql

src/db/schema.ts

@@ -1,4 +1,5 @@
 import {
+	boolean,
 	doublePrecision,
 	integer,
 	pgTable,
@@ -14,6 +15,9 @@ import {
 export const users = pgTable("users", {
 	id: serial("id").primaryKey(),
 	logtoSub: text("logto_sub").notNull().unique(),
+	displayName: text("display_name"),
+	avatarUrl: text("avatar_url"),
+	bio: text("bio"),
 	createdAt: timestamp("created_at").defaultNow().notNull(),
 });
 
@@ -105,6 +109,7 @@ export const setups = pgTable("setups", {
 	userId: integer("user_id")
 		.notNull()
 		.references(() => users.id),
+	isPublic: boolean("is_public").notNull().default(false),
 	createdAt: timestamp("created_at").defaultNow().notNull(),
 	updatedAt: timestamp("updated_at").defaultNow().notNull(),
 });
@@ -122,6 +127,33 @@ export const setupItems = pgTable("setup_items", {
 	classification: text("classification").notNull().default("base"),
 });
 
+// ── Global Items ────────────────────────────────────────────────────
+
+export const globalItems = pgTable("global_items", {
+	id: serial("id").primaryKey(),
+	brand: text("brand").notNull(),
+	model: text("model").notNull(),
+	category: text("category"),
+	weightGrams: doublePrecision("weight_grams"),
+	priceCents: integer("price_cents"),
+	imageUrl: text("image_url"),
+	description: text("description"),
+	createdAt: timestamp("created_at").defaultNow().notNull(),
+});
+
+// ── Item Global Links ───────────────────────────────────────────────
+
+export const itemGlobalLinks = pgTable("item_global_links", {
+	id: serial("id").primaryKey(),
+	itemId: integer("item_id")
+		.notNull()
+		.references(() => items.id, { onDelete: "cascade" })
+		.unique(),
+	globalItemId: integer("global_item_id")
+		.notNull()
+		.references(() => globalItems.id, { onDelete: "cascade" }),
+});
+
 // ── Settings ────────────────────────────────────────────────────────
 
 export const settings = pgTable(