feat(25-01): Zod schemas, upsert service functions, passing tests

- Add upsertGlobalItemSchema and bulkUpsertGlobalItemsSchema to schemas.ts
- Add UpsertGlobalItemInput and BulkUpsertGlobalItemsInput types to types.ts
- Implement upsertGlobalItem with onConflictDoUpdate and tag sync
- Implement bulkUpsertGlobalItems processing array in single transaction
- Fix migration 0003 to only add new columns + unique constraint
- All 21 tests pass including 8 new upsert operation tests

src/shared/types.ts

@@ -11,6 +11,7 @@ import type {
 	threads,
 } from "../db/schema.ts";
 import type {
+	bulkUpsertGlobalItemsSchema,
 	createCandidateSchema,
 	createCategorySchema,
 	createItemSchema,
@@ -27,6 +28,7 @@ import type {
 	updateProfileSchema,
 	updateSetupSchema,
 	updateThreadSchema,
+	upsertGlobalItemSchema,
 } from "./schemas.ts";
 
 // Types inferred from Zod schemas
@@ -50,6 +52,10 @@ export type UpdateClassification = z.infer<typeof updateClassificationSchema>;
 // Global item types
 export type SearchGlobalItems = z.infer<typeof searchGlobalItemsSchema>;
 export type UpdateProfile = z.infer<typeof updateProfileSchema>;
+export type UpsertGlobalItemInput = z.infer<typeof upsertGlobalItemSchema>;
+export type BulkUpsertGlobalItemsInput = z.infer<
+	typeof bulkUpsertGlobalItemsSchema
+>;
 
 // Types inferred from Drizzle schema
 export type Item = typeof items.$inferSelect;