feat(server): lightweight s3 client (#14348)

#### PR Dependency Tree


* **PR #14348** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added a dedicated S3-compatible client package and expanded
S3-compatible storage config (endpoint, region, forcePathStyle,
requestTimeoutMs, minPartSize, presign options, sessionToken).
* Document sync now broadcasts batched/compressed doc updates for more
efficient real-time syncing.

* **Tests**
* New unit and benchmark tests for base64 utilities and S3 multipart
listing; updated storage-related tests to match new formats.

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<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tools/cli/tsconfig.json

@@ -6,5 +6,8 @@
     "tsBuildInfoFile": "./dist/tsconfig.tsbuildinfo"
   },
   "include": ["./src"],
-  "references": [{ "path": "../utils" }]
+  "references": [
+    { "path": "../utils" },
+    { "path": "../../packages/common/s3-compat" }
+  ]
 }