Add component persistence foundation

src/db/schema/circuit-protection-devices.ts

@@ -0,0 +1,27 @@
+import { real, sqliteTable, text } from "drizzle-orm/sqlite-core";
+import type {
+  BreakerTripCharacteristic,
+  FuseUtilizationCategory,
+  ProtectionDeviceType,
+  RcdType,
+} from "../../shared/constants/protection-device.js";
+import { circuits } from "./circuits.js";
+
+export const circuitProtectionDevices = sqliteTable(
+  "circuit_protection_devices",
+  {
+    circuitId: text("circuit_id")
+      .primaryKey()
+      .references(() => circuits.id, { onDelete: "cascade" }),
+    type: text("type").$type<ProtectionDeviceType>().notNull(),
+    ratedCurrentA: real("rated_current_a").notNull(),
+    fuseUtilizationCategory: text(
+      "fuse_utilization_category"
+    ).$type<FuseUtilizationCategory>(),
+    tripCharacteristic: text(
+      "trip_characteristic"
+    ).$type<BreakerTripCharacteristic>(),
+    rcdType: text("rcd_type").$type<RcdType>(),
+    ratedResidualCurrentMa: real("rated_residual_current_ma"),
+  }
+);