Restructure components into types + instances

Components are now split into two concepts:
- Component (type definition): title, componentType, brand, partNumber,
  specs, notes, default condition/firmware/location
- Component Instance (individual physical unit): serialNumber, condition,
  firmwareVersion, notes, currentDeviceId, locationId

Key changes:
- New component_instances table with per-unit tracking
- Component list shows cards with total/installed/available counts
- Component detail page shows all instances with inline edit
- Add instances: bulk (quantity) or one at a time
- Each instance has install/remove/edit/delete actions
- Installation log now references instances, not components
- Device detail shows installed instances with instance numbers
- Dashboard and sidebar counts use instance totals
- Location pages show instances, not component types
- Labels show component type info (serial is per-instance)

IMPORTANT: Run db:push on the server after deploy to create the new
tables and columns. Existing component data will need manual migration.

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

src/lib/server/db/schema.ts

@@ -123,7 +123,7 @@ export const deviceDocuments = pgTable(
 	(table) => [index('device_documents_device_idx').on(table.deviceId)]
 );
 
-// ─── Components ─────────────────────────────────────────────────────
+// ─── Components (type definitions) ──────────────────────────────────
 
 export const components = pgTable(
 	'components',
@@ -133,10 +133,32 @@ export const components = pgTable(
 		componentType: text('component_type').notNull(),
 		brand: text('brand'),
 		partNumber: text('part_number'),
+		specs: text('specs'),
+		notes: text('notes'),
+		defaultCondition: text('default_condition').notNull().default('Working'),
+		defaultFirmwareVersion: text('default_firmware_version'),
+		defaultLocationId: uuid('default_location_id').references(() => locations.id),
+		createdAt: timestamp('created_at', { withTimezone: true }).defaultNow().notNull(),
+		updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull()
+	},
+	(table) => [
+		index('components_type_idx').on(table.componentType)
+	]
+);
+
+// ─── Component Instances (individual physical units) ────────────────
+
+export const componentInstances = pgTable(
+	'component_instances',
+	{
+		id: uuid('id').defaultRandom().primaryKey(),
+		componentId: uuid('component_id')
+			.notNull()
+			.references(() => components.id, { onDelete: 'cascade' }),
+		instanceNumber: integer('instance_number').notNull().default(1),
 		serialNumber: text('serial_number'),
 		condition: text('condition').notNull().default('Working'),
 		firmwareVersion: text('firmware_version'),
-		specs: text('specs'),
 		notes: text('notes'),
 		currentDeviceId: uuid('current_device_id').references(() => devices.id, {
 			onDelete: 'set null'
@@ -146,10 +168,10 @@ export const components = pgTable(
 		updatedAt: timestamp('updated_at', { withTimezone: true }).defaultNow().notNull()
 	},
 	(table) => [
-		index('components_type_idx').on(table.componentType),
-		index('components_device_idx').on(table.currentDeviceId),
-		index('components_location_idx').on(table.locationId),
-		check('components_condition_check', sql`${table.condition} IN ('Working', 'Faulty', 'Unknown', 'Refurbished')`)
+		index('instances_component_idx').on(table.componentId),
+		index('instances_device_idx').on(table.currentDeviceId),
+		index('instances_location_idx').on(table.locationId),
+		check('instances_condition_check', sql`${table.condition} IN ('Working', 'Faulty', 'Unknown', 'Refurbished')`)
 	]
 );
 
@@ -194,9 +216,9 @@ export const installationLog = pgTable(
 	'installation_log',
 	{
 		id: uuid('id').defaultRandom().primaryKey(),
-		componentId: uuid('component_id')
+		instanceId: uuid('instance_id')
 			.notNull()
-			.references(() => components.id, { onDelete: 'cascade' }),
+			.references(() => componentInstances.id, { onDelete: 'cascade' }),
 		deviceId: uuid('device_id')
 			.notNull()
 			.references(() => devices.id, { onDelete: 'cascade' }),
@@ -206,7 +228,7 @@ export const installationLog = pgTable(
 		performedAt: timestamp('performed_at', { withTimezone: true }).defaultNow().notNull()
 	},
 	(table) => [
-		index('install_log_component_idx').on(table.componentId),
+		index('install_log_instance_idx').on(table.instanceId),
 		index('install_log_device_idx').on(table.deviceId),
 		index('install_log_date_idx').on(table.performedAt),
 		check('install_log_action_check', sql`${table.action} IN ('installed', 'removed', 'swapped')`)