chore: remove applied migration script

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

migrations/002_metadata_kv_redesign.sql

@@ -1,88 +0,0 @@
--- 迁移：文件元数据系统重构
--- 将固定列 FileMetadata 表替换为灵活的 ObjectMetadata KV 表
--- 日期：2026-02-23
-
-BEGIN;
-
--- ==================== 1. object 表新增 mime_type 列 ====================
-ALTER TABLE object ADD COLUMN IF NOT EXISTS mime_type VARCHAR(127);
-
--- ==================== 2. physicalfile 表新增 checksum_sha256 列 ====================
-ALTER TABLE physicalfile ADD COLUMN IF NOT EXISTS checksum_sha256 VARCHAR(64);
-
--- ==================== 3. 创建 objectmetadata KV 表 ====================
-CREATE TABLE IF NOT EXISTS objectmetadata (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    object_id UUID NOT NULL REFERENCES object(id) ON DELETE CASCADE,
-    name VARCHAR(255) NOT NULL,
-    value TEXT NOT NULL,
-    is_public BOOLEAN NOT NULL DEFAULT false,
-    CONSTRAINT uq_object_metadata_object_name UNIQUE (object_id, name)
-);
-
-CREATE INDEX IF NOT EXISTS ix_object_metadata_object_id
-    ON objectmetadata (object_id);
-
--- ==================== 4. 创建 custompropertydefinition 表 ====================
-CREATE TABLE IF NOT EXISTS custompropertydefinition (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    owner_id UUID NOT NULL REFERENCES "user"(id) ON DELETE CASCADE,
-    name VARCHAR(100) NOT NULL,
-    type VARCHAR NOT NULL,
-    icon VARCHAR(100),
-    options JSON,
-    default_value VARCHAR(500),
-    sort_order INTEGER NOT NULL DEFAULT 0
-);
-
-CREATE INDEX IF NOT EXISTS ix_custompropertydefinition_owner_id
-    ON custompropertydefinition (owner_id);
-
--- ==================== 5. 迁移旧数据（从 filemetadata 到 objectmetadata）====================
--- 将 filemetadata 中的数据迁移到 objectmetadata KV 格式
-DO $$
-BEGIN
-    IF EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'filemetadata') THEN
-        -- 同时将 mime_type 上提到 object 表
-        UPDATE object o
-        SET mime_type = fm.mime_type
-        FROM filemetadata fm
-        WHERE fm.object_id = o.id AND fm.mime_type IS NOT NULL;
-
-        -- 将 checksum_sha256 迁移到 physicalfile 表
-        UPDATE physicalfile pf
-        SET checksum_sha256 = fm.checksum_sha256
-        FROM filemetadata fm
-        JOIN object o ON fm.object_id = o.id
-        WHERE o.physical_file_id = pf.id AND fm.checksum_sha256 IS NOT NULL;
-
-        -- 迁移 width → exif:width
-        INSERT INTO objectmetadata (id, object_id, name, value, is_public)
-        SELECT gen_random_uuid(), object_id, 'exif:width', CAST(width AS TEXT), true
-        FROM filemetadata WHERE width IS NOT NULL;
-
-        -- 迁移 height → exif:height
-        INSERT INTO objectmetadata (id, object_id, name, value, is_public)
-        SELECT gen_random_uuid(), object_id, 'exif:height', CAST(height AS TEXT), true
-        FROM filemetadata WHERE height IS NOT NULL;
-
-        -- 迁移 duration → stream:duration
-        INSERT INTO objectmetadata (id, object_id, name, value, is_public)
-        SELECT gen_random_uuid(), object_id, 'stream:duration', CAST(duration AS TEXT), true
-        FROM filemetadata WHERE duration IS NOT NULL;
-
-        -- 迁移 bitrate → stream:bitrate
-        INSERT INTO objectmetadata (id, object_id, name, value, is_public)
-        SELECT gen_random_uuid(), object_id, 'stream:bitrate', CAST(bitrate AS TEXT), true
-        FROM filemetadata WHERE bitrate IS NOT NULL;
-
-        -- 删除旧表
-        DROP TABLE filemetadata;
-    END IF;
-END $$;
-
-COMMIT;