Add xet protocol subsection pages, finish toctree

Author: rajatarya

docs/hub/_toctree.yml

@@ -59,7 +59,8 @@
     - local: xet/protocol/index
       title: Open Source Xet Protocol
       sections:
-        - title: Building a client library for xet storage
+        - local: xet/protocol/building-client
+          title: Building a client library for xet storage
           sections:
             - local: xet/protocol/upload-protocol
               title: Upload Protocol
@@ -71,7 +72,8 @@
               title: Authentication and Authorization
             - local: xet/protocol/file-id
               title: Hub files conversion to Xet File ID's
-        - title: Overall Xet architecture
+        - local: xet/protocol/architecture
+          title: Overall Xet architecture
           sections:
             - local: xet/protocol/chunking
               title: Content-Defined Chunking
@@ -85,6 +87,10 @@
               title: Shard Format
             - local: xet/protocol/deduplication
               title: Deduplication
+    - local: xet/legacy-git-lfs
+      title: Backwards Compatibility & Legacy
+    - local: xet/security
+      title: Security
 
   - local: repositories-pull-requests-discussions
     title: Pull Requests & Discussions

docs/hub/xet/protocol/architecture.md

@@ -0,0 +1,15 @@
+## Overall Xet Architecture
+
+(TODO: Add diagram here)
+
+These pages will describe the overall Xet architecture, including how to perform chunking & hashing of files for upload, how to process file reconstruction information when downloading, the specfics of the Xorb and Shard formats, and how deduplication is achieved by a client library.
+
+## Contents
+
+- [Content-Defined Chunking](./xet/protocol/chunking)
+- [Hashing Methods](./xet/protocol/hashing)
+- [File Reconstruction](./xet/protocol/file-reconstruction)
+- [Xorb Format](./xet/protocol/xorb)
+- [Shard Format](./xet/protocol/shard)
+- [Deduplication](./xet/protocol/deduplication)
+

docs/hub/xet/protocol/building-client.md

@@ -0,0 +1,12 @@
+## Building a client library for Xet storage
+
+These pages explain how you can build a client library for Xet storage. Included in these pages are the steps involved in uploading & downloading files, the web service APIs involved, and how authentication and authorization works.
+
+## Contents
+
+- [Upload Protocol](./xet/protocol/upload-protocol)
+- [Download Protocol](./xet/protocol/download-protocol)
+- [CAS API](./xet/protocol/api)
+- [Authentication and Authorization](./xet/protocol/auth)
+- [Hub file conversion to Xet File ID](./xet/protocol/file-id)
+