修复了一点bug，然后增加了图层拆分更多的功能

backend/internal/application/application.go

@@ -17,6 +17,7 @@ import (
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/httpapi"
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/identity"
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/jobs"
+	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/layercompositions"
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/localstore"
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/orchestration"
 	"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/postgres"
@@ -119,6 +120,7 @@ func New(options Options) (*App, error) {
 	var usageRepository usage.Repository = postgres.NewUsageRepository(database.Store)
 	var templateCatalog templates.Catalog = database.Store
 	var jobStore jobs.Store = database.Store
+	var layerCompositionRepository layercompositions.Repository = database.Store
 	var creationState orchestration.CreationStateWriter = database.Store
 	var jobState orchestration.JobStateWriter = database.Store
 	var settlementState orchestration.SettlementStateWriter = database.Store
@@ -134,6 +136,7 @@ func New(options Options) (*App, error) {
 		usageRepository = store
 		templateCatalog = store
 		jobStore = store
+		layerCompositionRepository = store
 		creationState = store
 		jobState = store
 		settlementState = store
@@ -277,6 +280,13 @@ func New(options Options) (*App, error) {
 		providerResolver = newRuntimeProviderResolver(getenv, runtimeSettings)
 	}
 	jobService := jobs.NewService(jobStore, nil)
+	layerCompositionService := layercompositions.NewService(layerCompositionRepository, assetCatalog)
+	layerCompositionHandler, err := httpapi.NewLayerCompositionsHandler(platformAuthorizer, jobService, layerCompositionService, httpapi.LayerCompositionsConfig{
+		MaxJSONBytes: positiveInt64Env(getenv, "ZHINIAN_MAX_JSON_BYTES", 1<<20),
+	})
+	if err != nil {
+		return nil, err
+	}
 	jobBuilder := runtimeProviderJobBuilder{fallback: getenv, settings: runtimeSettings, enforceAvailability: config.Backend == postgres.BackendPostgres}
 	usageService := usage.Service{
 		Repository: usageRepository,
@@ -358,6 +368,7 @@ func New(options Options) (*App, error) {
 	mux.Handle("/api/v1/jobs", jobsHandler)
 	mux.Handle("/api/v1/jobs/", jobsHandler)
 	mux.Handle("/api/internal/worker/tick", jobsHandler)
+	mux.Handle("/api/layer-compositions/", layerCompositionHandler)
 	mux.Handle("/api/image-templates", miscHandler)
 	mux.Handle("/api/image-templates/", miscHandler)
 	mux.Handle("/api/prompt/assemble", miscHandler)