feat: add attachment storage bindings and schema

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

migrations/0001_initial.sql

@@ -0,0 +1,81 @@
+-- cfw-attachment 初始 schema：附件、分类、标签、业务关联、审计
+CREATE TABLE attachments (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  status TEXT NOT NULL,
+  filename TEXT NOT NULL,
+  content_type TEXT NOT NULL,
+  byte_size INTEGER,
+  checksum_sha256 TEXT,
+  visibility TEXT NOT NULL DEFAULT 'private',
+  category_id TEXT,
+  description TEXT,
+  object_key TEXT,
+  etag TEXT,
+  created_by_user_id TEXT NOT NULL,
+  updated_by_user_id TEXT NOT NULL,
+  deleted_by_user_id TEXT,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  deleted_at TEXT
+);
+
+CREATE TABLE attachment_categories (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  slug TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  UNIQUE(user_id, slug)
+);
+
+CREATE TABLE attachment_tags (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  slug TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  updated_at TEXT NOT NULL,
+  UNIQUE(user_id, slug)
+);
+
+CREATE TABLE attachment_tag_links (
+  attachment_id TEXT NOT NULL,
+  tag_id TEXT NOT NULL,
+  user_id TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  PRIMARY KEY (attachment_id, tag_id),
+  FOREIGN KEY (attachment_id) REFERENCES attachments(id),
+  FOREIGN KEY (tag_id) REFERENCES attachment_tags(id)
+);
+
+CREATE TABLE attachment_links (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  attachment_id TEXT NOT NULL,
+  owner_type TEXT NOT NULL,
+  owner_id TEXT NOT NULL,
+  purpose TEXT NOT NULL,
+  sort_order INTEGER NOT NULL DEFAULT 0,
+  created_by_user_id TEXT NOT NULL,
+  created_at TEXT NOT NULL,
+  UNIQUE(user_id, owner_type, owner_id, purpose, attachment_id)
+);
+
+CREATE TABLE attachment_audit_events (
+  id TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  attachment_id TEXT,
+  actor_user_id TEXT NOT NULL,
+  action TEXT NOT NULL,
+  detail_json TEXT NOT NULL,
+  created_at TEXT NOT NULL
+);
+
+CREATE INDEX idx_attachments_user_status ON attachments(user_id, status, created_at);
+CREATE INDEX idx_attachments_user_category ON attachments(user_id, category_id, created_at);
+CREATE INDEX idx_attachment_tags_user_slug ON attachment_tags(user_id, slug);
+CREATE INDEX idx_attachment_tag_links_tag ON attachment_tag_links(user_id, tag_id);
+CREATE INDEX idx_attachment_links_owner ON attachment_links(user_id, owner_type, owner_id, purpose);
+CREATE INDEX idx_attachment_audit_user_attachment ON attachment_audit_events(user_id, attachment_id, created_at);