feat: добавить генерацию image variants

- добавлен shared config presets, custom transforms и allowlist hosts
- реализованы Backend endpoints для assets, presets и variants
- добавлена orchestration через PostgreSQL, RabbitMQ, S3 и worker
- обновлён Gateway read-through flow с L1 cache и корректным Vary: Accept
- добавлена миграция resize_mode для variants lookup
- обновлены dev scripts, env template, lockfile и документация

packages/database/src/index.ts

@@ -1,2 +1,3 @@
 export { createDatabase, createDatabasePool } from "./client.js"
+export type { Database, DatabasePool } from "./client.js"
 export * from "./schema.js"

packages/database/src/schema.ts

@@ -14,6 +14,7 @@ import {
 export const assetStatusEnum = pgEnum("asset_status", ["active", "disabled", "deleted"])
 export const variantFormatEnum = pgEnum("variant_format", ["avif", "webp", "jpg", "png"])
 export const requestedFormatEnum = pgEnum("requested_format", ["auto", "avif", "webp", "jpg", "png"])
+export const resizeModeEnum = pgEnum("resize_mode", ["fit", "fill"])
 export const variantStatusEnum = pgEnum("variant_status", ["pending", "processing", "ready", "failed"])
 
 const timestamps = {
@@ -86,6 +87,7 @@ export const imageVariants = pgTable(
     format: variantFormatEnum("format").notNull(),
     width: integer("width").notNull(),
     height: integer("height"),
+    resizeMode: resizeModeEnum("resize_mode").notNull().default("fit"),
     quality: integer("quality").notNull(),
     s3Key: text("s3_key").notNull(),
     contentType: text("content_type"),
@@ -103,6 +105,8 @@ export const imageVariants = pgTable(
       table.assetVersion,
       table.preset,
       table.width,
+      table.height,
+      table.resizeMode,
       table.quality,
       table.format,
     ),