Merge branch 'worktree-agent-a64432fc' into Develop

# Conflicts:
#	.planning/STATE.md

.planning/STATE.md

@@ -2,12 +2,12 @@
 gsd_state_version: 1.0
 milestone: v1.3
 milestone_name: Research & Decision Tools
-status: Ready to discuss/plan
-stopped_at: Phase 19 context gathered
-last_updated: "2026-04-05T18:04:19.312Z"
+status: planning
+stopped_at: Completed 19-01-PLAN.md
+last_updated: "2026-04-05T11:22:25.312Z"
 last_activity: 2026-04-05
 progress:
-  total_phases: 13
+  total_phases: 12
   completed_phases: 11
   total_plans: 33
   completed_plans: 31
@@ -21,16 +21,16 @@ progress:
 See: .planning/PROJECT.md (updated 2026-04-03)
 
 **Core value:** Help people make better gear decisions — discover what others use, compare real-world data, and see how a potential buy affects your setup before committing.
-**Current focus:** v2.0 Platform Foundation — Phase 19 (Reference Item Model & Tags Schema)
+**Current focus:** v2.0 Platform Foundation — Phase 14 (PostgreSQL Migration)
 
 ## Current Position
 
-Phase: 19 of 22 (Reference Item Model & Tags Schema)
-Plan: Not started
-Status: Ready to discuss/plan
+Phase: 19 of 19 (Reference Item Model & Tags Schema)
+Plan: 1 of 3
+Status: Executing
 Last activity: 2026-04-05
 
-Progress: [----------] 0% (v2.0 milestone)
+Progress: [#---------] 3% (v2.0 milestone)
 
 ## Performance Metrics
 
@@ -55,6 +55,9 @@ Key decisions made during v2.0 planning:
 - Separate globalItems table — not a flag on user items table
 - Single-user SQLite mode diverges at v2.0 boundary
 - [Phase 18]: Profile data loaded via usePublicProfile(userId) not /auth/me extension
+- [Phase 19]: Direct globalItemId FK on items replaces itemGlobalLinks junction table
+- [Phase 19]: Data migration SQL: UPDATE items before DROP TABLE item_global_links
+- [Phase 19]: Flat tags system without type categorization per D-16
 
 ### Pending Todos
 
@@ -67,6 +70,6 @@ None active.
 
 ## Session Continuity
 
-Last session: 2026-04-05T18:04:19.310Z
-Stopped at: Phase 19 context gathered
-Resume file: .planning/phases/19-reference-item-model-tags-schema/19-CONTEXT.md
+Last session: 2026-04-05T18:28:00Z
+Stopped at: Completed 19-01-PLAN.md
+Resume file: None

.planning/phases/19-reference-item-model-tags-schema/19-01-SUMMARY.md

@@ -0,0 +1,117 @@
+---
+phase: 19-reference-item-model-tags-schema
+plan: 01
+subsystem: database
+tags: [drizzle, postgres, schema, migration, tags, reference-items]
+
+requires:
+  - phase: 18-global-items-public-profiles
+    provides: globalItems table and itemGlobalLinks junction table
+provides:
+  - items.globalItemId direct FK replacing itemGlobalLinks junction table
+  - items.purchasePriceCents for user-specific purchase price tracking
+  - threadCandidates.globalItemId for catalog-linked candidates
+  - tags and globalItemTags tables for tag-based discovery
+  - Zod schemas with globalItemId and purchasePriceCents fields
+  - Tag and GlobalItemTag TypeScript types
+  - 30 curated seed tags for outdoor/adventure gear
+affects: [19-02, 19-03, global-item-service, item-service, thread-service]
+
+tech-stack:
+  added: []
+  patterns:
+    - "Reference item model: nullable globalItemId FK on items replaces junction table"
+    - "Tag system: flat tags table with many-to-many via globalItemTags"
+
+key-files:
+  created:
+    - drizzle-pg/0002_wakeful_vermin.sql
+  modified:
+    - src/db/schema.ts
+    - src/shared/schemas.ts
+    - src/shared/types.ts
+    - src/db/seed-global-items.ts
+
+key-decisions:
+  - "Data migration in SQL: UPDATE items SET global_item_id before DROP TABLE item_global_links"
+  - "Seed tags as flat list without type categorization per D-16"
+
+patterns-established:
+  - "Reference items: globalItemId nullable FK on items table, when set base data comes from global item"
+  - "Tag seeding: idempotent async seedTags function alongside seedGlobalItems"
+
+requirements-completed: [CATFLOW-03, TAG-01, TAG-02]
+
+duration: 4min
+completed: 2026-04-05
+---
+
+# Phase 19 Plan 01: Reference Item Model & Tags Schema Summary
+
+**Database schema updated with direct globalItemId FK on items/candidates, tags system tables, and data migration from itemGlobalLinks**
+
+## Performance
+
+- **Duration:** 4 min
+- **Started:** 2026-04-05T18:23:49Z
+- **Completed:** 2026-04-05T18:28:00Z
+- **Tasks:** 2
+- **Files modified:** 5
+
+## Accomplishments
+- Added globalItemId and purchasePriceCents columns to items table, globalItemId to threadCandidates
+- Created tags and globalItemTags tables for tag-based global item discovery
+- Removed itemGlobalLinks junction table with safe data migration in SQL
+- Updated Zod schemas with new fields, removed linkItemSchema
+- Converted seed script to async with 30 curated outdoor/adventure tags
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Update schema.ts, generate migration with data migration step** - `5df513c` (feat)
+2. **Task 2: Update Zod schemas, types, test helpers, and seed script** - `e9baa8d` (feat)
+
+## Files Created/Modified
+- `src/db/schema.ts` - Added globalItemId/purchasePriceCents to items, globalItemId to threadCandidates, tags + globalItemTags tables, removed itemGlobalLinks
+- `src/shared/schemas.ts` - Added globalItemId/purchasePriceCents to createItemSchema, globalItemId to createCandidateSchema, tags to searchGlobalItemsSchema, removed linkItemSchema
+- `src/shared/types.ts` - Added Tag and GlobalItemTag types, removed ItemGlobalLink and LinkItem
+- `src/db/seed-global-items.ts` - Converted to async, added seedTags with 30 curated tags
+- `drizzle-pg/0002_wakeful_vermin.sql` - Migration with ADD COLUMN, data migration UPDATE, DROP TABLE
+
+## Decisions Made
+- Reordered generated migration SQL to ensure data migration (UPDATE items SET global_item_id) runs before DROP TABLE item_global_links
+- Kept seed tags as flat list per D-16 (no type categorization)
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 3 - Blocking] drizzle-kit generate interactive prompt**
+- **Found during:** Task 1 (migration generation)
+- **Issue:** drizzle-kit detected table rename ambiguity between itemGlobalLinks and globalItemTags, prompting interactively
+- **Fix:** Used Bun.spawn with piped stdin to programmatically select "create table" option
+- **Files modified:** None (tooling workaround)
+- **Verification:** Migration file generated correctly
+- **Committed in:** 5df513c (Task 1 commit)
+
+---
+
+**Total deviations:** 1 auto-fixed (1 blocking)
+**Impact on plan:** Tooling workaround only, no code impact.
+
+## Issues Encountered
+None beyond the drizzle-kit interactive prompt handled above.
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Schema foundation ready for service layer updates (plan 19-02)
+- Services referencing itemGlobalLinks, linkItemToGlobal, unlinkItemFromGlobal need updating
+- Test files referencing removed schema entities need updating
+- Client code referencing LinkToGlobalItem component needs updating
+
+---
+*Phase: 19-reference-item-model-tags-schema*
+*Completed: 2026-04-05*

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(

src/db/seed-global-items.ts

@@ -1,27 +1,73 @@
 import seedData from "./global-items-seed.json";
 import { db as prodDb } from "./index.ts";
-import { globalItems } from "./schema.ts";
+import { globalItems, tags } from "./schema.ts";
 
 type Db = typeof prodDb;
 
+const SEED_TAGS = [
+	"handlebar-bag",
+	"framebag",
+	"saddlebag",
+	"top-tube-bag",
+	"stem-bag",
+	"fork-bag",
+	"hip-pack",
+	"backpack",
+	"tent",
+	"bivy",
+	"tarp",
+	"hammock",
+	"sleeping-bag",
+	"sleeping-pad",
+	"quilt",
+	"pillow",
+	"stove",
+	"cookware",
+	"water-filter",
+	"water-bottle",
+	"headlamp",
+	"bike-light",
+	"ultralight",
+	"waterproof",
+	"budget",
+	"premium",
+	"bikepacking",
+	"hiking",
+	"camping",
+	"touring",
+];
+
+/**
+ * Seed curated tags for outdoor/adventure gear.
+ * Idempotent: skips if any tags already exist.
+ */
+export async function seedTags(db: Db = prodDb) {
+	const existing = await db.select().from(tags).limit(1);
+	if (existing.length > 0) return;
+
+	for (const name of SEED_TAGS) {
+		await db.insert(tags).values({ name });
+	}
+}
+
 /**
  * Seed the global items table with initial bikepacking gear data.
  * Idempotent: skips if any rows already exist.
  */
-export function seedGlobalItems(db: Db = prodDb) {
-	const existing = db.select().from(globalItems).limit(1).all();
+export async function seedGlobalItems(db: Db = prodDb) {
+	const existing = await db.select().from(globalItems).limit(1);
 	if (existing.length > 0) return;
 
 	for (const item of seedData) {
-		db.insert(globalItems)
-			.values({
-				brand: item.brand,
-				model: item.model,
-				category: item.category ?? null,
-				weightGrams: item.weightGrams ?? null,
-				priceCents: item.priceCents ?? null,
-				description: item.description ?? null,
-			})
-			.run();
+		await db.insert(globalItems).values({
+			brand: item.brand,
+			model: item.model,
+			category: item.category ?? null,
+			weightGrams: item.weightGrams ?? null,
+			priceCents: item.priceCents ?? null,
+			description: item.description ?? null,
+		});
 	}
+
+	await seedTags(db);
 }

src/shared/schemas.ts

@@ -10,6 +10,8 @@ export const createItemSchema = z.object({
 	imageFilename: z.string().optional(),
 	imageSourceUrl: z.string().url().optional().or(z.literal("")),
 	quantity: z.number().int().positive().optional(),
+	globalItemId: z.number().int().positive().optional(),
+	purchasePriceCents: z.number().int().nonnegative().optional(),
 });
 
 export const updateItemSchema = createItemSchema.partial().extend({
@@ -58,6 +60,7 @@ export const createCandidateSchema = z.object({
 	status: candidateStatusSchema.optional(),
 	pros: z.string().optional(),
 	cons: z.string().optional(),
+	globalItemId: z.number().int().positive().optional(),
 });
 
 export const updateCandidateSchema = createCandidateSchema.partial();
@@ -95,10 +98,7 @@ export const updateClassificationSchema = z.object({
 // Global item schemas
 export const searchGlobalItemsSchema = z.object({
 	q: z.string().optional(),
-});
-
-export const linkItemSchema = z.object({
-	globalItemId: z.number().int().positive(),
+	tags: z.string().optional(),
 });
 
 // Profile schemas

src/shared/types.ts

@@ -2,10 +2,11 @@ import type { z } from "zod";
 import type {
 	categories,
 	globalItems,
-	itemGlobalLinks,
+	globalItemTags,
 	items,
 	setupItems,
 	setups,
+	tags,
 	threadCandidates,
 	threads,
 } from "../db/schema.ts";
@@ -15,7 +16,6 @@ import type {
 	createItemSchema,
 	createSetupSchema,
 	createThreadSchema,
-	linkItemSchema,
 	reorderCandidatesSchema,
 	resolveThreadSchema,
 	searchGlobalItemsSchema,
@@ -49,7 +49,6 @@ export type UpdateClassification = z.infer<typeof updateClassificationSchema>;
 
 // Global item types
 export type SearchGlobalItems = z.infer<typeof searchGlobalItemsSchema>;
-export type LinkItem = z.infer<typeof linkItemSchema>;
 export type UpdateProfile = z.infer<typeof updateProfileSchema>;
 
 // Types inferred from Drizzle schema
@@ -60,4 +59,5 @@ export type ThreadCandidate = typeof threadCandidates.$inferSelect;
 export type Setup = typeof setups.$inferSelect;
 export type SetupItem = typeof setupItems.$inferSelect;
 export type GlobalItem = typeof globalItems.$inferSelect;
-export type ItemGlobalLink = typeof itemGlobalLinks.$inferSelect;
+export type Tag = typeof tags.$inferSelect;
+export type GlobalItemTag = typeof globalItemTags.$inferSelect;