Phase 3: move service layer, serializers and DTOs into WarpEngine + dummy-app test suite

- all catalog services (update/software/highlighted/builds/file/file-manager/
  download/image + SoftwareResponseBuilder), the SoftwareUpdater platform
  services and their concerns, Blueprinter serializers (incl. TimestampFields)
  and the 4 DTOs now live in the engine under WarpEngine::
- constantize dispatch strings use absolute names
  (WarpEngine::SoftwareUpdater::<Platform>Service)
- container paths read from WarpEngine.config everywhere (FileService,
  DownloadService, FileManagerService, ArchiveExtraction, ReleaseSerializer
  path rewriting); FileManagerService base path is now lazy
- engine requires blueprinter itself; gemspec declares blueprinter + rubyzip
- engine test suite: spec/dummy app (mysql warp_engine_test, catalog-only
  schema), rails_helper with engine-local factories; catalog model/service
  specs and factories moved from the host
- host suite keeps TTG specs and loads catalog factories from the engine

Verified: engine suite 40 green, host suite 14 green, /api/software and
/api/builds byte-identical to baselines, admin OK.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

spec/dummy/db/schema.rb

@@ -0,0 +1,108 @@
+# A katalógus-táblák a host schema.rb-vel megegyező definícióval.
+ActiveRecord::Schema[8.1].define(version: 1) do
+  create_table "downloads", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", precision: 3
+    t.datetime "deleted_at", precision: 3
+    t.string "file_path", null: false
+    t.string "ip_address"
+    t.string "referer", limit: 500
+    t.bigint "release_id", unsigned: true
+    t.datetime "updated_at", precision: 3
+    t.string "user_agent", limit: 500
+    t.index ["deleted_at"], name: "idx_downloads_deleted_at"
+    t.index ["file_path"], name: "index_downloads_on_file_path"
+    t.index ["release_id"], name: "index_downloads_on_release_id"
+  end
+
+  create_table "external_links", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", precision: 3
+    t.datetime "deleted_at", precision: 3
+    t.string "label", limit: 128
+    t.bigint "software_id", unsigned: true
+    t.datetime "updated_at", precision: 3
+    t.string "url"
+    t.index ["deleted_at"], name: "idx_external_links_deleted_at"
+    t.index ["software_id"], name: "idx_external_links_software_id"
+  end
+
+  create_table "images", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "content_type", default: "application/octet-stream", null: false
+    t.datetime "created_at", null: false
+    t.datetime "deleted_at", precision: 3
+    t.string "filename", null: false
+    t.string "original_filename", null: false
+    t.datetime "updated_at", null: false
+    t.index ["deleted_at"], name: "idx_images_deleted_at"
+  end
+
+  create_table "platform_links", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", precision: 3
+    t.datetime "deleted_at", precision: 3
+    t.string "name", limit: 128
+    t.string "platform", limit: 128
+    t.integer "position", default: 0, null: false
+    t.datetime "updated_at", precision: 3
+    t.string "url"
+    t.index ["deleted_at"], name: "idx_platform_links_deleted_at"
+    t.index ["platform"], name: "idx_platform_links_platform"
+  end
+
+  create_table "release_assets", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", precision: 3, null: false
+    t.datetime "deleted_at", precision: 3
+    t.string "kind", limit: 32, null: false
+    t.string "path", null: false
+    t.bigint "release_id", null: false, unsigned: true
+    t.datetime "updated_at", precision: 3, null: false
+    t.index ["deleted_at"], name: "idx_release_assets_deleted_at"
+    t.index ["path"], name: "idx_release_assets_path"
+    t.index ["release_id", "kind"], name: "idx_release_assets_release_kind", unique: true
+  end
+
+  create_table "releases", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", precision: 3
+    t.datetime "deleted_at", precision: 3
+    t.bigint "software_id", unsigned: true
+    t.datetime "updated_at", precision: 3
+    t.string "version", limit: 64
+    t.index ["deleted_at"], name: "idx_releases_deleted_at"
+    t.index ["software_id"], name: "idx_releases_software_id"
+  end
+
+  create_table "software_images", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.bigint "image_id", null: false
+    t.boolean "is_default", default: false, null: false
+    t.integer "position", default: 0, null: false
+    t.bigint "software_id", null: false, unsigned: true
+    t.datetime "updated_at", null: false
+    t.index ["image_id"], name: "fk_rails_a456fbc278"
+    t.index ["software_id", "image_id"], name: "index_software_images_on_software_id_and_image_id", unique: true
+    t.index ["software_id", "position"], name: "index_software_images_on_software_id_and_position"
+  end
+
+  create_table "softwares", id: { type: :bigint, unsigned: true }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "author"
+    t.datetime "created_at", precision: 3
+    t.datetime "deleted_at", precision: 3
+    t.text "desc"
+    t.boolean "highlighted", default: false
+    t.string "license", limit: 128
+    t.string "name", limit: 128
+    t.string "platform", limit: 128
+    t.string "site"
+    t.string "status", limit: 20, default: "development"
+    t.text "story"
+    t.string "title"
+    t.datetime "updated_at", precision: 3
+    t.index ["deleted_at"], name: "idx_softwares_deleted_at"
+    t.index ["name"], name: "idx_softwares_name", unique: true
+  end
+
+  add_foreign_key "downloads", "releases", name: "fk_downloads_release", on_delete: :nullify
+  add_foreign_key "external_links", "softwares", name: "fk_softwares_external_links", on_delete: :cascade
+  add_foreign_key "release_assets", "releases", name: "fk_releases_release_assets", on_delete: :cascade
+  add_foreign_key "releases", "softwares", name: "fk_softwares_releases", on_delete: :cascade
+  add_foreign_key "software_images", "images"
+  add_foreign_key "software_images", "softwares", on_delete: :cascade
+end