Add detailed godoc documentation to CLIEntry function

Expand the documentation comment for CLIEntry to provide more context
about what the function does, including its use of the fx dependency
injection framework, signal handling, and blocking behavior.

internal/database/interface.go

@@ -1,3 +1,5 @@
+// Package database provides SQLite storage for BGP routing data including ASNs,
+// prefixes, announcements, peerings, and live route tables.
 package database
 
 import (
@@ -5,7 +7,8 @@ import (
 	"time"
 )
 
-// Stats contains database statistics
+// Stats contains database statistics including counts for ASNs, prefixes,
+// peerings, peers, and live routes, as well as file size and prefix distribution data.
 type Stats struct {
 	ASNs                   int
 	Prefixes               int
@@ -19,7 +22,9 @@ type Stats struct {
 	IPv6PrefixDistribution []PrefixDistribution
 }
 
-// Store defines the interface for database operations
+// Store defines the interface for database operations. It provides methods for
+// managing ASNs, prefixes, announcements, peerings, BGP peers, and live routes.
+// Implementations must be safe for concurrent use.
 type Store interface {
 	// ASN operations
 	GetOrCreateASN(number int, timestamp time.Time) (*ASN, error)

internal/database/models.go

@@ -1,3 +1,4 @@
+// Package database provides SQLite storage for BGP routing data.
 package database
 
 import (
@@ -6,7 +7,8 @@ import (
 	"github.com/google/uuid"
 )
 
-// ASN represents an Autonomous System Number
+// ASN represents an Autonomous System Number with its metadata including
+// handle, description, and first/last seen timestamps.
 type ASN struct {
 	ASN         int       `json:"asn"`
 	Handle      string    `json:"handle"`