fix: use @libsql/client/http subpath to avoid native module deps

The main @libsql/client entry point pulls in the native libsql module
and isomorphic-ws/isomorphic-fetch, which webpack cannot parse in
EdgeOne builds. Using the http subpath provides a pure HTTP client
that works in edge/serverless environments without native dependencies.

Also add libsql, @libsql/isomorphic-fetch, @libsql/isomorphic-ws to
the edge build alias list in next.config.js as a safety net.

scripts/init-turso.js

@@ -14,7 +14,7 @@
  * 3. 运行：node scripts/init-turso.js
  */
 
-const { createClient } = require('@libsql/client');
+const { createClient } = require('@libsql/client/http');
 const fs = require('fs');
 const path = require('path');
 const crypto = require('crypto');