feat(storage): integrate Alibaba Cloud OSS for file persistence - Add OSSAdapter and LocalAdapter with StorageFactory pattern - Integrate PKB module with OSS upload - Rename difyDocumentId to storageKey - Create 4 OSS buckets and development specification

backend/prisma/manual-migrations/001_add_postgres_cache_and_checkpoint.sql

@@ -116,6 +116,9 @@ ORDER BY ordinal_position;
 
 
 
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backend/prisma/manual-migrations/run-migration-002.ts

@@ -129,6 +129,9 @@ runMigration()
 
 
 
+
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+
 
 
 

backend/prisma/migrations/20251208_add_column_mapping/migration.sql

@@ -63,6 +63,9 @@ COMMENT ON COLUMN "dc_schema"."dc_tool_c_sessions"."column_mapping" IS '列名
 
 
 
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backend/prisma/migrations/create_tool_c_session.sql

@@ -90,6 +90,9 @@ COMMENT ON COLUMN dc_schema.dc_tool_c_sessions.expires_at IS '过期时间（创
 
 
 
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backend/prisma/migrations/manual/ekb_create_indexes.sql

@@ -62,3 +62,6 @@ USING gin (metadata jsonb_path_ops);
 -- SELECT indexname, indexdef FROM pg_indexes WHERE schemaname = 'ekb_schema';
 
 
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backend/prisma/migrations/manual/ekb_create_indexes_mvp.sql

@@ -29,3 +29,6 @@ ON "ekb_schema"."ekb_document"
 USING gin (tags);
 
 
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backend/prisma/schema.prisma

@@ -152,7 +152,7 @@ model Document {
   fileType          String        @map("file_type")
   fileSizeBytes     BigInt        @map("file_size_bytes")
   fileUrl           String        @map("file_url")
-  difyDocumentId    String        @map("dify_document_id")
+  storageKey        String        @map("dify_document_id")  // 原 difyDocumentId，现存储 OSS 路径
   status            String        @default("uploading")
   progress          Int           @default(0)
   errorMessage      String?       @map("error_message")
@@ -168,7 +168,7 @@ model Document {
   batchResults      BatchResult[] @relation("DocumentBatchResults")
   knowledgeBase     KnowledgeBase @relation("KnowledgeBaseDocuments", fields: [kbId], references: [id], onDelete: Cascade)
 
-  @@index([difyDocumentId], map: "idx_pkb_documents_dify_document_id")
+  @@index([storageKey], map: "idx_pkb_documents_dify_document_id")  // 保留原索引名
   @@index([extractionMethod], map: "idx_pkb_documents_extraction_method")
   @@index([kbId], map: "idx_pkb_documents_kb_id")
   @@index([status], map: "idx_pkb_documents_status")