Add status page enhancements with new metrics and footer

- Add GC statistics (run count, total/last pause, heap usage)
- Add BGP peer count tracking from RIS Live OPEN/NOTIFICATION messages
- Add route churn rate metric (announcements + withdrawals per second)
- Add announcement and withdrawal counters
- Add footer with attribution, license, and git revision
- Embed git revision at build time via ldflags
- Update HTML template to display all new metrics

internal/templates/templates.go

@@ -7,6 +7,8 @@ import (
 	"net/url"
 	"sync"
 	"time"
+
+	"git.eeqj.de/sneak/routewatch/internal/version"
 )
 
 //go:embed status.html
@@ -86,12 +88,19 @@ func initTemplates() {
 
 	// Create common template functions
 	funcs := template.FuncMap{
-		"timeSince": timeSince,
-		"urlEncode": url.QueryEscape,
+		"timeSince":        timeSince,
+		"urlEncode":        url.QueryEscape,
+		"appName":          func() string { return version.Name },
+		"appAuthor":        func() string { return version.Author },
+		"appAuthorURL":     func() string { return version.AuthorURL },
+		"appLicense":       func() string { return version.License },
+		"appRepoURL":       func() string { return version.RepoURL },
+		"appGitRevision":   func() string { return version.GitRevisionShort },
+		"appGitCommitURL":  func() string { return version.CommitURL() },
 	}
 
 	// Parse status template
-	defaultTemplates.Status, err = template.New("status").Parse(statusHTML)
+	defaultTemplates.Status, err = template.New("status").Funcs(funcs).Parse(statusHTML)
 	if err != nil {
 		panic("failed to parse status template: " + err.Error())
 	}