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/components/layout/AppShell.tsx

@@ -1,4 +1,5 @@
 import { useEffect } from 'react'
+import { useCatalogStore } from '../../state/catalogStore'
 import { useProjectStore } from '../../state/projectStore'
 import FlowCanvas from '../canvas/FlowCanvas'
 import DevicePalette from '../palette/DevicePalette'
@@ -9,12 +10,15 @@ import TopBar from './TopBar'
 export default function AppShell() {
   const isLoaded = useProjectStore((s) => s.isLoaded)
   const loadInitialDiagram = useProjectStore((s) => s.loadInitialDiagram)
+  const isCatalogLoaded = useCatalogStore((s) => s.isLoaded)
+  const loadCatalog = useCatalogStore((s) => s.loadCatalog)
 
   useEffect(() => {
     loadInitialDiagram()
-  }, [loadInitialDiagram])
+    loadCatalog()
+  }, [loadInitialDiagram, loadCatalog])
 
-  if (!isLoaded) {
+  if (!isLoaded || !isCatalogLoaded) {
     return <div className="flex h-screen items-center justify-center text-sm text-slate-400">Loading…</div>
   }