feat(19-01): update schema with reference item model and tags tables

- Add globalItemId and purchasePriceCents columns to items table
- Add globalItemId column to threadCandidates table
- Add tags and globalItemTags tables for tag system
- Remove itemGlobalLinks table (replaced by direct FK)
- Generate migration with data migration step before table drop

drizzle-pg/0002_wakeful_vermin.sql

@@ -0,0 +1,27 @@
+CREATE TABLE "tags" (
+	"id" serial PRIMARY KEY NOT NULL,
+	"name" text NOT NULL,
+	"created_at" timestamp DEFAULT now() NOT NULL,
+	CONSTRAINT "tags_name_unique" UNIQUE("name")
+);
+--> statement-breakpoint
+CREATE TABLE "global_item_tags" (
+	"global_item_id" integer NOT NULL,
+	"tag_id" integer NOT NULL,
+	CONSTRAINT "global_item_tags_global_item_id_tag_id_pk" PRIMARY KEY("global_item_id","tag_id")
+);
+--> statement-breakpoint
+ALTER TABLE "items" ADD COLUMN "global_item_id" integer;--> statement-breakpoint
+ALTER TABLE "items" ADD COLUMN "purchase_price_cents" integer;--> statement-breakpoint
+ALTER TABLE "thread_candidates" ADD COLUMN "global_item_id" integer;--> statement-breakpoint
+UPDATE "items" SET "global_item_id" = (
+  SELECT "global_item_id" FROM "item_global_links"
+  WHERE "item_global_links"."item_id" = "items"."id"
+);
+--> statement-breakpoint
+ALTER TABLE "item_global_links" DISABLE ROW LEVEL SECURITY;--> statement-breakpoint
+DROP TABLE "item_global_links" CASCADE;--> statement-breakpoint
+ALTER TABLE "global_item_tags" ADD CONSTRAINT "global_item_tags_global_item_id_global_items_id_fk" FOREIGN KEY ("global_item_id") REFERENCES "public"."global_items"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "global_item_tags" ADD CONSTRAINT "global_item_tags_tag_id_tags_id_fk" FOREIGN KEY ("tag_id") REFERENCES "public"."tags"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "items" ADD CONSTRAINT "items_global_item_id_global_items_id_fk" FOREIGN KEY ("global_item_id") REFERENCES "public"."global_items"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "thread_candidates" ADD CONSTRAINT "thread_candidates_global_item_id_global_items_id_fk" FOREIGN KEY ("global_item_id") REFERENCES "public"."global_items"("id") ON DELETE no action ON UPDATE no action;

drizzle-pg/meta/_journal.json

@@ -15,6 +15,13 @@
       "when": 1775386658636,
       "tag": "0001_tough_boomerang",
       "breakpoints": true
+    },
+    {
+      "idx": 2,
+      "version": "7",
+      "when": 1775413526643,
+      "tag": "0002_wakeful_vermin",
+      "breakpoints": true
     }
   ]
 }

src/db/schema.ts

@@ -55,6 +55,8 @@ export const items = pgTable("items", {
 	imageFilename: text("image_filename"),
 	imageSourceUrl: text("image_source_url"),
 	quantity: integer("quantity").notNull().default(1),
+	globalItemId: integer("global_item_id").references(() => globalItems.id),
+	purchasePriceCents: integer("purchase_price_cents"),
 	createdAt: timestamp("created_at").defaultNow().notNull(),
 	updatedAt: timestamp("updated_at").defaultNow().notNull(),
 });
@@ -97,6 +99,7 @@ export const threadCandidates = pgTable("thread_candidates", {
 	pros: text("pros"),
 	cons: text("cons"),
 	sortOrder: doublePrecision("sort_order").notNull().default(0),
+	globalItemId: integer("global_item_id").references(() => globalItems.id),
 	createdAt: timestamp("created_at").defaultNow().notNull(),
 	updatedAt: timestamp("updated_at").defaultNow().notNull(),
 });
@@ -141,19 +144,29 @@ export const globalItems = pgTable("global_items", {
 	createdAt: timestamp("created_at").defaultNow().notNull(),
 });
 
-// ── Item Global Links ───────────────────────────────────────────────
+// ── Tags ───────────────────────────────────────────────────────────
 
-export const itemGlobalLinks = pgTable("item_global_links", {
+export const tags = pgTable("tags", {
 	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" }),
+	name: text("name").notNull().unique(),
+	createdAt: timestamp("created_at").defaultNow().notNull(),
 });
 
+// ── Global Item Tags ───────────────────────────────────────────────
+
+export const globalItemTags = pgTable(
+	"global_item_tags",
+	{
+		globalItemId: integer("global_item_id")
+			.notNull()
+			.references(() => globalItems.id, { onDelete: "cascade" }),
+		tagId: integer("tag_id")
+			.notNull()
+			.references(() => tags.id, { onDelete: "cascade" }),
+	},
+	(table) => [primaryKey({ columns: [table.globalItemId, table.tagId] })],
+);
+
 // ── Settings ────────────────────────────────────────────────────────
 
 export const settings = pgTable(