fix: resolve TS compilation errors for dev deployment

- Add latitude/longitude Float fields to Client model in schema.prisma
- Rewrite dashboard controller (remove duplicate const data, use getRecentActivity)
- Remove invalid files field from ticket comment create
- Add migration for client coordinates

packages/db/prisma/migrations/20260506070000_add_client_coordinates/migration.sql

@@ -0,0 +1,3 @@
+-- AlterTable
+ALTER TABLE "clients" ADD COLUMN "latitude" DOUBLE PRECISION;
+ALTER TABLE "clients" ADD COLUMN "longitude" DOUBLE PRECISION;