feat(catalog): Notion-style shared select fields (tag/pacchetto/categoria/fase)

Turn the catalog into Notion/Airtable select properties:
- Tag + Pacchetto: multi-select with a SHARED pool — created values persist and
  are selectable from a dropdown across all services (no more re-typing)
- Categoria + Fase: single-select chips with the same dropdown + create-on-the-fly
- Rename an option once -> propagates to every row (renameServiceOption)
- Deterministic colors per value (shared option-colors util)
- Quick-add row now sets name+description+categoria+fase+prezzo then Enter (active)
- Search broadened to name/categoria/fase/tag/pacchetto

Data model (additive): tag/pacchetto in polymorphic tags table (entity_type
services / services.pacchetto); categoria/fase as single-select columns on
services (new: services.fase). Pools derived from distinct values.

New: OptionSelect, OptionMultiSelect, option-colors. Removed tag-multi-select.
Migration 0007_add_services_fase.sql must be applied before runtime.

tsc + eslint + next build clean. CSV bulk import (OFFER-12) stays Phase 12.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/db/schema.ts

@@ -216,7 +216,8 @@ export const services = pgTable("services", {
   name: text("name").notNull(),
   description: text("description"),
   unit_price: numeric("unit_price", { precision: 10, scale: 2 }).notNull(),
-  category: text("category"),
+  category: text("category"),             // single-select option (shared pool derived from distinct values)
+  fase: text("fase"),                     // single-select option — offer lifecycle phase (Notion-style)
   active: boolean("active").notNull().default(true),
   migrated_from: text("migrated_from"),   // "service_catalog" | "offer_services" | null (new rows after Phase 7)
   migrated_id: text("migrated_id"),       // original id from source table, null for new rows