first commit

src/current/current.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { DbService } from '../db/db.service';
+import { CurrentRow } from './current.types';
+
+@Injectable()
+export class CurrentRepository {
+  constructor(private readonly db: DbService) {}
+
+  /** Читает текущие значения и добавляет метаданные тегов для UI-дашбордов. */
+  async findByEdge(edge: string, tags: string[] | null): Promise<CurrentRow[]> {
+    const result = await this.db.query<CurrentRow>(
+      `
+        SELECT
+          c.edge,
+          c.tag,
+          c.value,
+          c."createdAt",
+          c."updatedAt",
+          t.name,
+          t.tag_group,
+          t.min,
+          t.max,
+          t.comment,
+          t.unit_of_measurement,
+          t.precision
+        FROM current AS c
+        LEFT JOIN tag AS t
+          ON t.id = c.tag
+        WHERE c.edge = $1
+          AND ($2::varchar[] IS NULL OR c.tag = ANY($2::varchar[]))
+        ORDER BY c.tag ASC
+      `,
+      [edge, tags],
+    );
+
+    return result.rows;
+  }
+}