Add soft delete for components (disabled flag)

- disabled boolean on components table (default false)
- Component list filters out disabled components
- Component detail returns 404 for disabled
- Delete button with confirmation on component detail page
- Installation form filters out instances of disabled components

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/server/db/schema.ts

@@ -138,6 +138,7 @@ export const components = pgTable(
 		defaultCondition: text('default_condition').notNull().default('Working'),
 		defaultFirmwareVersion: text('default_firmware_version'),
 		defaultLocationId: uuid('default_location_id').references(() => locations.id),
+		disabled: boolean('disabled').default(false).notNull(),
 		createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
 		updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull()
 	},