chore(repo): initialize WebDrop monorepo

Signed-off-by: JustMe <mr.toing@outlook.com>

packages/core/src/index.ts

@@ -0,0 +1,55 @@
+/**
+ * @webdrop/core:WebDrop 的端到端加密核心。
+ *
+ * 前端只需要这几件事:
+ *   ChannelSession.create(...)       创建频道,得到会话、POST /channels 的请求体和请求头、分享链接
+ *   ChannelSession.open(link)        打开链接,得到会话
+ *   session.authHeaders(role)        所有请求要带的头
+ *   session.encryptText/Json/File    把内容加密成可直接 POST 的帧
+ *   session.createItemReader()       喂入 WebSocket / log 的记录,得到解密后的条目
+ *   session.decryptItemStream()      流式解密大文件
+ *
+ * 本包只依赖 WebCrypto,不含 UI,不发网络请求,不处理重连和队列。
+ */
+
+export { ChannelSession, openLink } from './session.js';
+export type {
+  AuthRole,
+  ChannelSettings,
+  CreateChannelBody,
+  CreatedChannel,
+  CreateOptions,
+  FileMetaOverrides,
+  OpenOptions,
+  PlanItemOptions,
+} from './session.js';
+
+export { collectFrames } from './item.js';
+export type { ContentSource, EncodedFrame, ItemMeta, ItemPlan, PlanOptions } from './item.js';
+
+export { ItemReader, itemJson, itemText } from './reader.js';
+export type { ItemEvent, ReaderContext, ReceivedItem, ReceivedKind } from './reader.js';
+
+export { decryptItemFrames, decryptItemStream, splitEnvelopes } from './stream.js';
+export type { DecryptStreamOptions, ItemDecodeResult } from './stream.js';
+
+export { parseLogRecord, parseLogRecords } from './log.js';
+export type { LogRecord, RemovedReason } from './log.js';
+
+export { buildLink, parseLink } from './link.js';
+export type { LinkParts, ParsedLink } from './link.js';
+
+export { fromBase64Url, toBase64Url } from './bytes.js';
+
+export { Flags, MAX_FRAME_DATA, PROTOCOL_VERSION } from './constants.js';
+export type { ChannelMode, ItemKind } from './constants.js';
+
+export {
+  CapabilityError,
+  IntegrityError,
+  LimitError,
+  LinkError,
+  ModeMismatchError,
+  WebDropError,
+} from './errors.js';
+export type { IntegrityReason } from './errors.js';