docs(commit): add docs to commit data structure

Author: isokolovskii

internal/conventional/commit.go

@@ -1,11 +1,18 @@
 package conventional
 
 type (
+	// Commit represents the components of a Conventional Commit message.
+	// See https://www.conventionalcommits.org/ for the specification.
 	Commit struct {
-		Type   string
-		Scope  string
-		Title  string
-		Body   string
+		// Type describes the kind of change (e.g., "feat", "fix", "docs").
+		Type string
+		// Type describes the kind of change (e.g., "feat", "fix", "docs").
+		Scope string
+		// Title is a short description of the change.
+		Title string
+		// Body is an optional longer description.
+		Body string
+		// Footer is optional metadata (e.g., "BREAKING CHANGE:", issue refs).
 		Footer string
 	}
 )