From d585f0889eef41f1386abefe3daa2e617a21895e Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Wed, 4 Mar 2026 14:31:38 +0800
Subject: *: Add package-level docs

---
 cmd/show-object/main.go      | 1 +
 format/doc.go                | 2 ++
 internal/adler32/doc.go      | 2 ++
 reachability/reachability.go | 1 +
 4 files changed, 6 insertions(+)
 create mode 100644 format/doc.go
 create mode 100644 internal/adler32/doc.go

diff --git a/cmd/show-object/main.go b/cmd/show-object/main.go
index b3f5a9cd..94978db6 100644
--- a/cmd/show-object/main.go
+++ b/cmd/show-object/main.go
@@ -1,3 +1,4 @@
+// Command show-object provides a small command line utility to show the details of a specified Git object.
 package main
 
 import (
diff --git a/format/doc.go b/format/doc.go
new file mode 100644
index 00000000..d84b09e5
--- /dev/null
+++ b/format/doc.go
@@ -0,0 +1,2 @@
+// Package format encapsulates constants and general-purpose routines for Git-related formats.
+package format
diff --git a/internal/adler32/doc.go b/internal/adler32/doc.go
new file mode 100644
index 00000000..add30867
--- /dev/null
+++ b/internal/adler32/doc.go
@@ -0,0 +1,2 @@
+// Package adler32 implements an SIMD-optimized Adler-32 checksum.
+package adler32
diff --git a/reachability/reachability.go b/reachability/reachability.go
index 93bc840b..12f672e3 100644
--- a/reachability/reachability.go
+++ b/reachability/reachability.go
@@ -1,3 +1,4 @@
+// Package reachability traverses the object graph to test relationships and emit object lists.
 package reachability
 
 import (
-- 
cgit v1.3.1-10-gc9f91