Wire the app to the shared Supabase catalog (public catalog read integration)

Moves port/cable/category/device-template data from per-diagram embedded
storage to the global public/private catalog backed by Supabase, per
organized-ideas.md's "live reference, not snapshot" decision.

- domain/types.ts, project.ts, compatibility.ts, bom.ts: lookup functions
  now take an explicit Catalog parameter instead of deriving data from
  Project — Project is reduced to just diagram-scoped fields.
- New CatalogRepository/SupabaseCatalogRepository (mirrors the
  DiagramRepository pattern) and catalogStore.ts, replacing the
  catalog-related actions that used to live in projectStore.
- device_templates gets a plain-text manufacturer column for now (the
  normalized manufacturer catalog from organized-ideas.md §3 is its own
  future pass, not blocking this one).
- domain/library.ts is no longer imported by the app — it's now only the
  source scripts/generate-seed.mjs reads to produce supabase/seed.sql.
- Swept every UI call site via tsc -b until clean; oxlint clean; 23/23
  pgTAP RLS tests still passing after a `supabase db reset`.

src/data/CatalogRepository.ts

@@ -0,0 +1,30 @@
+import type { Catalog, CableType, DeviceCategoryDef, DeviceTemplate, PortType } from '../domain/types'
+
+/**
+ * Storage abstraction for the global port/cable/category/device-template
+ * catalog — mirrors DiagramRepository's role, but for catalog data instead
+ * of diagrams. Fetching returns everything the current user can see (public
+ * entries plus their own private ones); RLS does that filtering server-side,
+ * so implementations don't need to filter client-side.
+ *
+ * Only covers the "read + manage your own private entries" surface for now.
+ * Submitting a private entry for public review/promotion is a separate,
+ * not-yet-built workflow (organized-ideas.md §3/§9) — these `add*`/`update*`
+ * methods always create or edit is_public = false rows you own.
+ */
+export interface CatalogRepository {
+  /** Everything visible to the current user: public entries plus their own private ones. */
+  load(): Promise<Catalog>
+
+  addDeviceCategory(name: string): Promise<DeviceCategoryDef>
+
+  addPortType(portType: Omit<PortType, 'id' | 'custom'>): Promise<PortType>
+  updatePortType(id: string, patch: Partial<Omit<PortType, 'id' | 'custom'>>): Promise<void>
+
+  addCableType(cableType: Omit<CableType, 'id' | 'custom'>): Promise<CableType>
+  updateCableType(id: string, patch: Partial<Omit<CableType, 'id' | 'custom'>>): Promise<void>
+
+  addDeviceTemplate(template: Omit<DeviceTemplate, 'id' | 'custom'>): Promise<DeviceTemplate>
+  updateDeviceTemplate(id: string, patch: Partial<Omit<DeviceTemplate, 'id' | 'custom'>>): Promise<void>
+  removeDeviceTemplate(id: string): Promise<void>
+}