pc: PC setup tracker at /trackers/pc on the hardware schema

- model the existing hardware schema in Drizzle (devices, components, new sensitivities)
- idempotent reconciling migration: new columns, checks, setup_overview view, grants, meta.tables
- seed: main PC labels/hostnames, planned AMD X3D + RTX 5090 build, stan-ovh (OVH RISE-S),
  other devices, sensitivity placeholders (no invented cm/360)
- owner-only add/edit via modals; public view hides notes/order numbers
- trackers dropdown entry + icon, seo/title/sitemap, owner write prefix

src/lib/server/owner.test.ts

@@ -41,6 +41,8 @@ describe('owner gate', () => {
 		expect(isOwnerWritePath('/trackers/health/import')).toBe(true);
 		expect(isOwnerWritePath('/trackers/cars/ford/mustang')).toBe(true);
 		expect(isOwnerOnlyPath('/trackers/cars/ford/mustang')).toBe(false);
+		expect(isOwnerWritePath('/trackers/pc')).toBe(true);
+		expect(isOwnerOnlyPath('/trackers/pc')).toBe(false);
 		expect(isOwnerWritePath('/trackers/bookshelf')).toBe(false);
 		expect(isOwnerWritePath('/lists/books')).toBe(false);
 	});