Remove BGP keepalive logging and add peer tracking

- Created bgp_peers table to track all BGP peers
- Added PeerHandler to update peer last seen times for all message types
- Removed verbose BGP keepalive debug logging
- BGP keepalive messages now silently update peer tracking

Refactor HTML templates to use go:embed

- Created internal/templates package with embedded templates
- Moved status.html from inline const to separate file
- Templates are parsed once on startup
- Server now uses parsed template instead of raw string

Optimize AS data embedding with gzip compression

- Changed asinfo package to embed gzipped data (2.4MB vs 12MB)
- Updated Makefile to gzip AS data during update
- Added decompression during initialization
- Raw JSON file excluded from git

pkg/asinfo/asinfo.go

@@ -2,13 +2,16 @@
 package asinfo
 
 import (
+	"bytes"
+	"compress/gzip"
 	_ "embed"
 	"encoding/json"
+	"io"
 	"sync"
 )
 
-//go:embed asdata.json
-var asDataJSON []byte
+//go:embed asdata.json.gz
+var asDataGZ []byte
 
 // Info represents information about an Autonomous System
 type Info struct {
@@ -24,8 +27,10 @@ type Registry struct {
 }
 
 var (
+	//nolint:gochecknoglobals // Singleton pattern for embedded data
 	defaultRegistry *Registry
-	once            sync.Once
+	//nolint:gochecknoglobals // Singleton pattern for embedded data
+	once sync.Once
 )
 
 // initRegistry initializes the default registry with embedded data
@@ -33,12 +38,26 @@ func initRegistry() {
 	defaultRegistry = &Registry{
 		byASN: make(map[int]*Info),
 	}
-	
+
+	// Decompress the gzipped data
+	gzReader, err := gzip.NewReader(bytes.NewReader(asDataGZ))
+	if err != nil {
+		panic("failed to create gzip reader: " + err.Error())
+	}
+	defer func() {
+		_ = gzReader.Close()
+	}()
+
+	jsonData, err := io.ReadAll(gzReader)
+	if err != nil {
+		panic("failed to decompress AS data: " + err.Error())
+	}
+
 	var asInfos []Info
-	if err := json.Unmarshal(asDataJSON, &asInfos); err != nil {
+	if err := json.Unmarshal(jsonData, &asInfos); err != nil {
 		panic("failed to unmarshal embedded AS data: " + err.Error())
 	}
-	
+
 	for i := range asInfos {
 		info := &asInfos[i]
 		defaultRegistry.byASN[info.ASN] = info
@@ -48,18 +67,19 @@ func initRegistry() {
 // Get returns AS information for the given ASN
 func Get(asn int) (*Info, bool) {
 	once.Do(initRegistry)
-	
+
 	defaultRegistry.mu.RLock()
 	defer defaultRegistry.mu.RUnlock()
-	
+
 	info, ok := defaultRegistry.byASN[asn]
 	if !ok {
 		return nil, false
 	}
-	
+
 	// Return a copy to prevent mutation
-	copy := *info
-	return &copy, true
+	infoCopy := *info
+
+	return &infoCopy, true
 }
 
 // GetDescription returns just the description for an ASN
@@ -68,6 +88,7 @@ func GetDescription(asn int) string {
 	if !ok {
 		return ""
 	}
+
 	return info.Description
 }
 
@@ -77,16 +98,17 @@ func GetHandle(asn int) string {
 	if !ok {
 		return ""
 	}
+
 	return info.Handle
 }
 
 // Total returns the total number of AS entries in the registry
 func Total() int {
 	once.Do(initRegistry)
-	
+
 	defaultRegistry.mu.RLock()
 	defer defaultRegistry.mu.RUnlock()
-	
+
 	return len(defaultRegistry.byASN)
 }
 
@@ -94,15 +116,15 @@ func Total() int {
 // Note: This creates a copy of all data, use sparingly
 func All() []Info {
 	once.Do(initRegistry)
-	
+
 	defaultRegistry.mu.RLock()
 	defer defaultRegistry.mu.RUnlock()
-	
+
 	result := make([]Info, 0, len(defaultRegistry.byASN))
 	for _, info := range defaultRegistry.byASN {
 		result = append(result, *info)
 	}
-	
+
 	return result
 }
 
@@ -110,17 +132,17 @@ func All() []Info {
 // This is a simple case-sensitive substring search
 func Search(query string) []Info {
 	once.Do(initRegistry)
-	
+
 	defaultRegistry.mu.RLock()
 	defer defaultRegistry.mu.RUnlock()
-	
+
 	var results []Info
 	for _, info := range defaultRegistry.byASN {
 		if contains(info.Handle, query) || contains(info.Description, query) {
 			results = append(results, *info)
 		}
 	}
-	
+
 	return results
 }
 
@@ -135,5 +157,6 @@ func containsImpl(s, substr string) bool {
 			return true
 		}
 	}
+
 	return false
-}
+}