feat(hub,site): enhance domain intelligence and monitor performance

Implement comprehensive domain data collection including provider detection (DNS, hosting, email, CA), HTTP headers, TLS certificate chains, and SEO metadata. Added PageSpeed Insights integration for monitors to track Core Web Vitals.

- **hub**:
  - Add provider detection logic for DNS, email, and hosting.
  - Expand `Domain` entity to include SEO, headers, certificates, and enhanced registration details.
  - Implement automated collection of TLD, WHOIS raw data, and host country codes.
  - Update scheduler to track changes in providers and security settings (privacy/transfer lock).
  - Add PageSpeed check endpoint to monitor API.
- **site**:
  - Update domain table and detail views to display new intelligence (providers, headers, SEO).
  - Implement PageSpeed metrics visualization with Core Web Vitals status indicators.
  - Add display options for provider information in the domain list.
- **db**:
  - Add migration for new domain collection fields.

internal/hub/pagespeed/checker.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"time"
 )
 
@@ -65,21 +66,21 @@ type PageSpeedResponse struct {
 
 // Metrics represents the extracted performance metrics
 type Metrics struct {
-	Performance     float64       `json:"performance"`
-	Accessibility   float64       `json:"accessibility"`
-	BestPractices   float64       `json:"bestPractices"`
-	SEO             float64       `json:"seo"`
-	PWA             float64       `json:"pwa"`
-	FCP             float64       `json:"fcp"`             // First Contentful Paint (ms)
-	LCP             float64       `json:"lcp"`             // Largest Contentful Paint (ms)
-	TTFB            float64       `json:"ttfb"`            // Time to First Byte (ms)
-	CLS             float64       `json:"cls"`             // Cumulative Layout Shift
-	TBT             float64       `json:"tbt"`             // Total Blocking Time (ms)
-	SpeedIndex      float64       `json:"speedIndex"`      // Speed Index (ms)
-	TTI             float64       `json:"tti"`             // Time to Interactive (ms)
-	CheckedAt       time.Time     `json:"checkedAt"`
-	URL             string        `json:"url"`
-	Strategy        string        `json:"strategy"` // mobile or desktop
+	Performance   float64   `json:"performance"`
+	Accessibility float64   `json:"accessibility"`
+	BestPractices float64   `json:"bestPractices"`
+	SEO           float64   `json:"seo"`
+	PWA           float64   `json:"pwa"`
+	FCP           float64   `json:"fcp"`        // First Contentful Paint (ms)
+	LCP           float64   `json:"lcp"`        // Largest Contentful Paint (ms)
+	TTFB          float64   `json:"ttfb"`       // Time to First Byte (ms)
+	CLS           float64   `json:"cls"`        // Cumulative Layout Shift
+	TBT           float64   `json:"tbt"`        // Total Blocking Time (ms)
+	SpeedIndex    float64   `json:"speedIndex"` // Speed Index (ms)
+	TTI           float64   `json:"tti"`        // Time to Interactive (ms)
+	CheckedAt     time.Time `json:"checkedAt"`
+	URL           string    `json:"url"`
+	Strategy      string    `json:"strategy"` // mobile or desktop
 }
 
 // Checker handles PageSpeed checks
@@ -99,7 +100,7 @@ func NewChecker(apiKey string) *Checker {
 }
 
 // CheckURL runs a PageSpeed check on a URL
-func (c *Checker) CheckURL(url string, strategy string) (*Metrics, error) {
+func (c *Checker) CheckURL(pageURL string, strategy string) (*Metrics, error) {
 	if strategy == "" {
 		strategy = "mobile"
 	}
@@ -107,7 +108,7 @@ func (c *Checker) CheckURL(url string, strategy string) (*Metrics, error) {
 	// Build PageSpeed API URL
 	apiURL := fmt.Sprintf(
 		"https://www.googleapis.com/pagespeedonline/v5/runPagespeed?url=%s&strategy=%s&category=PERFORMANCE&category=ACCESSIBILITY&category=BEST_PRACTICES&category=SEO&category=PWA",
-		url,
+		url.QueryEscape(pageURL),
 		strategy,
 	)
 
@@ -132,7 +133,7 @@ func (c *Checker) CheckURL(url string, strategy string) (*Metrics, error) {
 	}
 
 	metrics := &Metrics{
-		URL:           url,
+		URL:           pageURL,
 		Strategy:      strategy,
 		CheckedAt:     time.Now(),
 		Performance:   result.LighthouseResult.Categories.Performance.Score * 100,
@@ -192,6 +193,7 @@ func GetCoreWebVitalsStatus(metrics *Metrics) map[string]string {
 		"cls":  getCLSStatus(metrics.CLS),
 		"fcp":  getFCPStatus(metrics.FCP),
 		"ttfb": getTTFBStatus(metrics.TTFB),
+		"tti":  getTTIStatus(metrics.TTI),
 	}
 }
 
@@ -240,6 +242,15 @@ func getTTFBStatus(value float64) string {
 	return "poor"
 }
 
+func getTTIStatus(value float64) string {
+	if value <= 3800 {
+		return "good"
+	} else if value <= 7300 {
+		return "needs-improvement"
+	}
+	return "poor"
+}
+
 // FormatDuration formats milliseconds to readable string
 func FormatDuration(ms float64) string {
 	if ms < 1000 {